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Samsung Microwave & GE Microwave oven

Discussion in 'Electronic Repair' started by Soyrunner, Sep 20, 2004.

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  1. Soyrunner

    Soyrunner Guest

    I found the following thread using Google but found it difficult to reply so
    I copied the thread. It follows my message.

    My GE microwave oven started acting up about 2 months ago. It has a Samsung
    microprocessor and this earlier thread seemed close. For seemingly no
    reason it would start emitting beeps every few seconds. I unplugged it,
    plugged it back in an it was okay. Then it stopped taking input from the
    keypad. Unplugging it didn't reset the microprocessor. I took it apart and
    after removing the circuit board and replacing it, then reassembling it, the
    oven worked okay for a few days. I thought it might be noise from a bug
    zapper, the noise having a slope so sharp it might have been mistaken for
    leaking rf. Wasn't it. I removed all the transistors and capacitors and
    they tested okay. Whenever I'd take it apart and reassemble it would work
    for a few days. I didn't want to peel off the keypad because I felt I
    couldn't return the peeled keypad without it looking pretty bad. I looked
    at replacement parts and ruled out buying parts. Finally I took the keypad
    off and exercised it bending it bending it back and forth on each axis. It
    peeled off nicely and I was surprised! When I returned it there was no
    visible evidence I had taken it off (but I was careful). The oven has been
    working flawlessly for weeks now. I suspect maybe I could have bumped into
    the keypad with something or possible just age, over 6 years old, but it's
    working perfectly. I'm happy.

    Bill
    ------------------------------------------------------------------------

    All messages from thread
    Message 1 in thread
    From: ()
    Subject: samsung microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 1997/07/22


    I am looking for a place that sales Samsung microwave oven parts.

    The part is a microwave oven door.

    The model is Samsung MU3050W.

    Is there anyone who can point me in the right direction so that I can get
    cooking again.

    Thanks

    jlwing



    -------------------==== Posted via Deja News ====-----------------------
    http://www.dejanews.com/ Search, Read, Post to Usenet
    Message 2 in thread
    From: Da Man ()
    Subject: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/04/24


    I have a Samsung Microwave (Model #: MW6470W) that the digital control is
    malfunctioning on. The display Works fine when first powered up (displays
    all segments, then SIMPLY SAMSUNG. The clock can be set, and numbers can
    be entered. All functions seem to be normal until a function is entered
    (at ANY time) which will cause the microwave to turn on, or the start
    button, at that point the keyboard freezes (can't change size of
    proportions, restart it after the door switch was activated, or anything
    with the keyboard). Basically, the microwave's keyboard will not respond
    to the next input. The relays operate properly and the display will count
    down properly when in cook mode (provided that the door switch was closed
    and was not opened), it will stop if the door switch is activated and ask to
    "press start".
    The relay(s) will shut down properly. The Magnetron transformer relay will
    cycle
    on and off according to duty cycle. What does not happen is that once a
    button that will cause the microwave to enter a cook cycle is pushed,
    even with all power wires disconnected and direct power to the control
    board relay, the keyboard's input does nothing - no beep, no functions,
    no start up after the door switch was activated and shut it off. Start
    does nothing (display keeps cycling push start). The beeper will beep
    reminding that the cycle is over or to push start, just that the key
    board has no input. The only way to get the keyboard to work properly is
    to reset the microprocessor by turning the power off or resetting it with
    the reset pin on the microprocessor.


    The Microwave was in a flood, even before the original box was opened. It
    is possible that the microwave was plugged in before it was fully dried out,
    as when I acquired it, there was still water inside of the keyboard stickers
    (which I removed and cleaned). The rest of the microwave works fine. I have
    never seen the display working properly.

    Also note that I do not have the instruction manual, and there may be
    something simple that I may be missing, but I doubt that ;-)

    Thanks in advance for any help in getting this thing to work, as it is in
    new
    condition (with a few exceptions!), along with a void warranty,




    Jeff
    Message 3 in thread
    From: Jerry G. ()
    Subject: Re: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/04/23


    By your description, this sounds like a fault on the microprocessor
    board. It can be any of the components in this area that is making it
    hang up. The most reliable and easiest fix is to change the complete
    board.

    --

    Jerry Greenberg

    ===========================================
    Email:
    Home Page: http://www.zoom-one.com
    Components: http://www.zoom-one.com/electron.htm
    Products: http://shop.affinia.com/jerryg50/Store1/
    Navigation: http://www.zoom-one.com/navigati.htm
    Sci/Inst: http://www.zoom-one.com/actel.htm
    Personal: http://www.total.net/~jerryg

    Electronic Components, And Navigation Compasses

    ============ Message Separator ===============


    I have a Samsung Microwave (Model #: MW6470W) that the digital control
    is
    malfunctioning on. The display Works fine when first powered up
    (displays
    all segments, then SIMPLY SAMSUNG. The clock can be set, and numbers
    can
    be entered. All functions seem to be normal until a function is
    entered
    (at ANY time) which will cause the microwave to turn on, or the start
    button, at that point the keyboard freezes (can't change size of
    proportions, restart it after the door switch was activated, or
    anything
    with the keyboard). Basically, the microwave's keyboard will not
    respond
    to the next input. The relays operate properly and the display will
    count
    down properly when in cook mode (provided that the door switch was
    closed
    and was not opened), it will stop if the door switch is activated and
    ask to
    "press start".
    The relay(s) will shut down properly. The Magnetron transformer relay
    will
    cycle
    Read the rest of this message... (43 more lines)

    Message 4 in thread
    From: Sam Goldwasser ()
    Subject: Re: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/04/24



    A couple of easy checks would be of the power supply filter caps and for bad
    connections.

    --- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
    Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
    +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
    | Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html


    I have a Samsung Microwave (Model #: MW6470W) that the digital control
    is
    malfunctioning on. The display Works fine when first powered up
    (displays
    all segments, then SIMPLY SAMSUNG. The clock can be set, and numbers
    can
    be entered. All functions seem to be normal until a function is
    entered
    (at ANY time) which will cause the microwave to turn on, or the start
    button, at that point the keyboard freezes (can't change size of
    proportions, restart it after the door switch was activated, or
    anything
    with the keyboard). Basically, the microwave's keyboard will not
    respond
    to the next input. The relays operate properly and the display will
    count
    down properly when in cook mode (provided that the door switch was
    closed
    and was not opened), it will stop if the door switch is activated and
    ask to
    "press start".
    The relay(s) will shut down properly. The Magnetron transformer relay
    will
    cycle
    on and off according to duty cycle. What does not happen is that once
    a
    button that will cause the microwave to enter a cook cycle is pushed,
    even with all power wires disconnected and direct power to the control
    board relay, the keyboard's input does nothing - no beep, no
    functions,
    no start up after the door switch was activated and shut it off. Start
    Read the rest of this message... (36 more lines)

    Message 5 in thread
    From: Da Man ()
    Subject: Re: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/04/27



    Thanks,

    But I resoldered half the board in hopes of a bad connection already.



    Jeff

    Read the rest of this message... (50 more lines)

    Message 6 in thread
    From: Da Man ()
    Subject: Re: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/04/27



    Thanks,

    But I was hoping that I could get around replacing that board, since I would
    think that it is expensive and may not be worth while :-( - sorta like
    having to replace a bad magnetron, being it's almost cheaper to buy a whole
    new microwave. Oh well, I will price a new one any way, or maybe I might get
    lucky and find another microwave with a good board.

    The interesting thing is that the microprocessor does not freeze up - it
    just fails to respond to the keyboard. I find it hard to believe that the
    microprocessor lost some of it's programming or is damaged in one particular
    address, etc. Especially since every other feature works properly (unless it
    came from the factory that way!). I thought of a pulse/noise entering back
    through the circuitry from the relays cutting in, but the keyboard freezes
    before they click on.

    I may just do some extensive component testing on it when I am really bored,
    since I don't care if reliability is a big issue because it is my microwave.
    I also noticed that there are some weird transistor setups driving mostly
    outputs on the board - probably about 10 to 12 of them that I may pop out
    and test individually




    Jeff


    By your description, this sounds like a fault on the microprocessor
    board. It can be any of the components in this area that is making it
    hang up. The most reliable and easiest fix is to change the complete
    board.

    --

    Jerry Greenberg



    ===========================================
    Email:
    Home Page: http://www.zoom-one.com
    Components: http://www.zoom-one.com/electron.htm
    Products: http://shop.affinia.com/jerryg50/Store1/
    Navigation: http://www.zoom-one.com/navigati.htm
    Sci/Inst: http://www.zoom-one.com/actel.htm
    Personal: http://www.total.net/~jerryg

    Electronic Components, And Navigation Compasses
    Read the rest of this message... (75 more lines)

    Message 7 in thread
    From: Bonita Lee Geniac ()
    Subject: Re: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/04/27



    Before you go any further, completely disconnect the keypad and locate the
    matrix diagram for the keypad functions. Then manually program the unit
    without
    the keypad by following the matrix. I have never seen a keypad that had
    been
    wet or one that someone took apart that would ever work properly again. It
    sounds much more like a keypad problem than a citcuit board problem. The
    keypads
    Read the rest of this message... (69 more lines)

    Message 8 in thread
    From: Da Man ()
    Subject: Re: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/05/01



    Thanks everybody.

    I found the problem - a diode that was going to the keyboard matrix decided
    to have a reverse voltage break down of 0.8 volts, fooling the computer, and
    causing the keypad to stop responding. It probably became shorted when the
    keypad was wet, from an increase in current, since the part of the matrix
    that the diode was supplying was for all the functions that cause the
    microwave to enter a cook mode.

    P. S. if your very careful when peeling the keypad buttons back, and the
    sticky stuff does not peel off, then there may be a chance that will work
    fine afterwards - I had mine off 3 times and it works fine.

    Thanks,



    Jeff

    Read the rest of this message... (108 more lines)

    Message 9 in thread
    From: Trevor Mooney ()
    Subject: samsung microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2002-05-04 06:26:07 PST



    Hi, I have a prob with my Samsung MB245 microwave.
    some time a go when I plug it in it the touch pad locked up when I set the
    clock.
    Then a series of beeps started and wouldn't stop. Now after a long spell
    sitting in garage when I plug it in the whole display lights up but no
    response from touch pad.
    I have my suspicions but would like some Ideas before I toss it.
    Thanks Trevor
     
  2. Jerry G.

    Jerry G. Guest

    There may be a cold solder or cracked trace on the board. If it is a multi
    layered board, the fault may be between the layers. It is also possible that
    there is a defective part, in such a way that when it is disturbed it works
    for a while longer, and then fails again.

    As for how they service these, the service centre will change the complete
    board to service these types of intermittent faults. There would be too much
    of a loss of time to try to service these at the component level, especially
    for intermittent faults.

    --

    Jerry G.
    ==========================


    I found the following thread using Google but found it difficult to reply so
    I copied the thread. It follows my message.

    My GE microwave oven started acting up about 2 months ago. It has a Samsung
    microprocessor and this earlier thread seemed close. For seemingly no
    reason it would start emitting beeps every few seconds. I unplugged it,
    plugged it back in an it was okay. Then it stopped taking input from the
    keypad. Unplugging it didn't reset the microprocessor. I took it apart and
    after removing the circuit board and replacing it, then reassembling it, the
    oven worked okay for a few days. I thought it might be noise from a bug
    zapper, the noise having a slope so sharp it might have been mistaken for
    leaking rf. Wasn't it. I removed all the transistors and capacitors and
    they tested okay. Whenever I'd take it apart and reassemble it would work
    for a few days. I didn't want to peel off the keypad because I felt I
    couldn't return the peeled keypad without it looking pretty bad. I looked
    at replacement parts and ruled out buying parts. Finally I took the keypad
    off and exercised it bending it bending it back and forth on each axis. It
    peeled off nicely and I was surprised! When I returned it there was no
    visible evidence I had taken it off (but I was careful). The oven has been
    working flawlessly for weeks now. I suspect maybe I could have bumped into
    the keypad with something or possible just age, over 6 years old, but it's
    working perfectly. I'm happy.

    Bill
    ------------------------------------------------------------------------

    All messages from thread
    Message 1 in thread
    From: ()
    Subject: samsung microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 1997/07/22


    I am looking for a place that sales Samsung microwave oven parts.

    The part is a microwave oven door.

    The model is Samsung MU3050W.

    Is there anyone who can point me in the right direction so that I can get
    cooking again.

    Thanks

    jlwing



    -------------------==== Posted via Deja News ====-----------------------
    http://www.dejanews.com/ Search, Read, Post to Usenet
    Message 2 in thread
    From: Da Man ()
    Subject: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/04/24


    I have a Samsung Microwave (Model #: MW6470W) that the digital control is
    malfunctioning on. The display Works fine when first powered up (displays
    all segments, then SIMPLY SAMSUNG. The clock can be set, and numbers can
    be entered. All functions seem to be normal until a function is entered
    (at ANY time) which will cause the microwave to turn on, or the start
    button, at that point the keyboard freezes (can't change size of
    proportions, restart it after the door switch was activated, or anything
    with the keyboard). Basically, the microwave's keyboard will not respond
    to the next input. The relays operate properly and the display will count
    down properly when in cook mode (provided that the door switch was closed
    and was not opened), it will stop if the door switch is activated and ask to
    "press start".
    The relay(s) will shut down properly. The Magnetron transformer relay will
    cycle
    on and off according to duty cycle. What does not happen is that once a
    button that will cause the microwave to enter a cook cycle is pushed,
    even with all power wires disconnected and direct power to the control
    board relay, the keyboard's input does nothing - no beep, no functions,
    no start up after the door switch was activated and shut it off. Start
    does nothing (display keeps cycling push start). The beeper will beep
    reminding that the cycle is over or to push start, just that the key
    board has no input. The only way to get the keyboard to work properly is
    to reset the microprocessor by turning the power off or resetting it with
    the reset pin on the microprocessor.


    The Microwave was in a flood, even before the original box was opened. It
    is possible that the microwave was plugged in before it was fully dried out,
    as when I acquired it, there was still water inside of the keyboard stickers
    (which I removed and cleaned). The rest of the microwave works fine. I have
    never seen the display working properly.

    Also note that I do not have the instruction manual, and there may be
    something simple that I may be missing, but I doubt that ;-)

    Thanks in advance for any help in getting this thing to work, as it is in
    new
    condition (with a few exceptions!), along with a void warranty,




    Jeff
    Message 3 in thread
    From: Jerry G. ()
    Subject: Re: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/04/23


    By your description, this sounds like a fault on the microprocessor
    board. It can be any of the components in this area that is making it
    hang up. The most reliable and easiest fix is to change the complete
    board.

    --

    Jerry Greenberg

    ===========================================
    Email:
    Home Page: http://www.zoom-one.com
    Components: http://www.zoom-one.com/electron.htm
    Products: http://shop.affinia.com/jerryg50/Store1/
    Navigation: http://www.zoom-one.com/navigati.htm
    Sci/Inst: http://www.zoom-one.com/actel.htm
    Personal: http://www.total.net/~jerryg

    Electronic Components, And Navigation Compasses

    ============ Message Separator ===============


    I have a Samsung Microwave (Model #: MW6470W) that the digital control
    is
    malfunctioning on. The display Works fine when first powered up
    (displays
    all segments, then SIMPLY SAMSUNG. The clock can be set, and numbers
    can
    be entered. All functions seem to be normal until a function is
    entered
    (at ANY time) which will cause the microwave to turn on, or the start
    button, at that point the keyboard freezes (can't change size of
    proportions, restart it after the door switch was activated, or
    anything
    with the keyboard). Basically, the microwave's keyboard will not
    respond
    to the next input. The relays operate properly and the display will
    count
    down properly when in cook mode (provided that the door switch was
    closed
    and was not opened), it will stop if the door switch is activated and
    ask to
    "press start".
    The relay(s) will shut down properly. The Magnetron transformer relay
    will
    cycle
    Read the rest of this message... (43 more lines)

    Message 4 in thread
    From: Sam Goldwasser ()
    Subject: Re: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/04/24



    A couple of easy checks would be of the power supply filter caps and for bad
    connections.

    --- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
    Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
    +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
    | Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html


    I have a Samsung Microwave (Model #: MW6470W) that the digital control
    is
    malfunctioning on. The display Works fine when first powered up
    (displays
    all segments, then SIMPLY SAMSUNG. The clock can be set, and numbers
    can
    be entered. All functions seem to be normal until a function is
    entered
    (at ANY time) which will cause the microwave to turn on, or the start
    button, at that point the keyboard freezes (can't change size of
    proportions, restart it after the door switch was activated, or
    anything
    with the keyboard). Basically, the microwave's keyboard will not
    respond
    to the next input. The relays operate properly and the display will
    count
    down properly when in cook mode (provided that the door switch was
    closed
    and was not opened), it will stop if the door switch is activated and
    ask to
    "press start".
    The relay(s) will shut down properly. The Magnetron transformer relay
    will
    cycle
    on and off according to duty cycle. What does not happen is that once
    a
    button that will cause the microwave to enter a cook cycle is pushed,
    even with all power wires disconnected and direct power to the control
    board relay, the keyboard's input does nothing - no beep, no
    functions,
    no start up after the door switch was activated and shut it off. Start
    Read the rest of this message... (36 more lines)

    Message 5 in thread
    From: Da Man ()
    Subject: Re: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/04/27



    Thanks,

    But I resoldered half the board in hopes of a bad connection already.



    Jeff

    Read the rest of this message... (50 more lines)

    Message 6 in thread
    From: Da Man ()
    Subject: Re: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/04/27



    Thanks,

    But I was hoping that I could get around replacing that board, since I would
    think that it is expensive and may not be worth while :-( - sorta like
    having to replace a bad magnetron, being it's almost cheaper to buy a whole
    new microwave. Oh well, I will price a new one any way, or maybe I might get
    lucky and find another microwave with a good board.

    The interesting thing is that the microprocessor does not freeze up - it
    just fails to respond to the keyboard. I find it hard to believe that the
    microprocessor lost some of it's programming or is damaged in one particular
    address, etc. Especially since every other feature works properly (unless it
    came from the factory that way!). I thought of a pulse/noise entering back
    through the circuitry from the relays cutting in, but the keyboard freezes
    before they click on.

    I may just do some extensive component testing on it when I am really bored,
    since I don't care if reliability is a big issue because it is my microwave.
    I also noticed that there are some weird transistor setups driving mostly
    outputs on the board - probably about 10 to 12 of them that I may pop out
    and test individually




    Jeff


    By your description, this sounds like a fault on the microprocessor
    board. It can be any of the components in this area that is making it
    hang up. The most reliable and easiest fix is to change the complete
    board.

    --

    Jerry Greenberg



    ===========================================
    Email:
    Home Page: http://www.zoom-one.com
    Components: http://www.zoom-one.com/electron.htm
    Products: http://shop.affinia.com/jerryg50/Store1/
    Navigation: http://www.zoom-one.com/navigati.htm
    Sci/Inst: http://www.zoom-one.com/actel.htm
    Personal: http://www.total.net/~jerryg

    Electronic Components, And Navigation Compasses
    Read the rest of this message... (75 more lines)

    Message 7 in thread
    From: Bonita Lee Geniac ()
    Subject: Re: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/04/27



    Before you go any further, completely disconnect the keypad and locate the
    matrix diagram for the keypad functions. Then manually program the unit
    without
    the keypad by following the matrix. I have never seen a keypad that had
    been
    wet or one that someone took apart that would ever work properly again. It
    sounds much more like a keypad problem than a citcuit board problem. The
    keypads
    Read the rest of this message... (69 more lines)

    Message 8 in thread
    From: Da Man ()
    Subject: Re: Samsung Microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2000/05/01



    Thanks everybody.

    I found the problem - a diode that was going to the keyboard matrix decided
    to have a reverse voltage break down of 0.8 volts, fooling the computer, and
    causing the keypad to stop responding. It probably became shorted when the
    keypad was wet, from an increase in current, since the part of the matrix
    that the diode was supplying was for all the functions that cause the
    microwave to enter a cook mode.

    P. S. if your very careful when peeling the keypad buttons back, and the
    sticky stuff does not peel off, then there may be a chance that will work
    fine afterwards - I had mine off 3 times and it works fine.

    Thanks,



    Jeff

    Read the rest of this message... (108 more lines)

    Message 9 in thread
    From: Trevor Mooney ()
    Subject: samsung microwave


    View this article only
    Newsgroups: sci.electronics.repair
    Date: 2002-05-04 06:26:07 PST



    Hi, I have a prob with my Samsung MB245 microwave.
    some time a go when I plug it in it the touch pad locked up when I set the
    clock.
    Then a series of beeps started and wouldn't stop. Now after a long spell
    sitting in garage when I plug it in the whole display lights up but no
    response from touch pad.
    I have my suspicions but would like some Ideas before I toss it.
    Thanks Trevor
     
  3. Soyrunner

    Soyrunner Guest

    I'm still convinced I found the problem. If I fired it up with the keypad
    in the circuit before flexing it, the display would indicate I should enter
    the time but keypad presses were ignored. If I fired it up with the keypad
    out of the circuit all the segments would light then the microprocessor
    would reset and indicate RESET on the display.

    My board my have been different than that noted below where the sender felt
    a diode near the ribbon connector was bad. Actually, the same diode on
    mine read the same way and continued to do so after I replaced it. Then I
    realized after looking at the circuit that it was a flyback diode in one of
    the relay coil circuits. Without the flyback diode the drive transistor
    turning off could generate a spike which could punch out the drive
    transistor. Reading the diode in reverse isn't showing a failed diode but
    the base emitter drop of the drive transistor. No, the problem in my case,
    and I'd guess his, was in the keypad.

    Bill
     
  4. It worked for maybe a month then I slammed the door and it stopped. Peeled
    it again, replaced it and it works. A new touchpad is something like $55
    while a new microwave is near $80. Peeling and resticking is free.

    What I found that's worked for over 2 months now is when I replaced the
    touchpad I offset upwards just a little. The top edge is not off just a
    little bit. It seems fine and works well. I no longer slam the door
    either.
     
  5. kinni420

    kinni420 Guest

    I have a Samsung mw6470w microwave the problem with it is that it ha
    stopped to heat.

    One morning when operated it was doing everything but just not heatin
    the things.

    Its working normally, all its functions are normal but its not jus
    heating.

    it has worked very well all these years. No problem at all.....is i
    all over for it now?

    Will it be cheaper to buy a new one....Will it worth repairing what i
    actually wrong with it?

    I live in Surrey Canada
     
  6. It could be as simple as a bad connection - or almost anything else.

    Testing will be needed.

    Given the cost of new microwave ovens, unless it is special in some way,
    may not be worth fixing.

    However, you can't do anything about it yourself unless you are experieced
    in high voltage high power electronics. The inside of a microwave oven
    can be lethal.

    --- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/
    Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/
    +Lasers | Sam's Laser FAQ: http://repairfaq.ece.drexel.edu/sam/lasersam.htm
    | Mirror Sites: http://repairfaq.ece.drexel.edu/REPAIR/F_mirror.html

    Note: These links are hopefully temporary until we can sort out the excessive
    traffic on Repairfaq.org.

    Important: Anything sent to the email address in the message header above is
    ignored unless my full name is included in the subject line. Or, you can
    contact me via the Feedback Form in the FAQs.
     
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