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Emerson TV ?

Discussion in 'Electronic Repair' started by hr(bob) [email protected], Sep 18, 2007.

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  1. hr(bob)

    hr(bob) Guest

    I have just been given an Emerson/Orion 1995 model TC1375A color tv.
    The power relay clicks on and off from the power switch, everything
    else is totally quiet. There is +150 or so volts at various points on
    the chassis when the power is on, but that is as far as I have gone so
    far.

    Does anyone have any experience with this chassis? If so, what should
    I be looking for?

    Also, do you think it is worth spending $10 or so for the schematic,
    considering the age of the set. I got it second hand so I have no
    idea how it was performing before it died, I could do an emission
    check on each of the 3 CRT guns by digging out an antique CRT
    rejuvenator/tester if I can find it.

    Any reasonable/lucid suggestions welcomed.

    H. R.(Bob) Hofmann
     
  2. JANA

    JANA Guest

    You will need a scope. Check to see if there are horizontal drive pulses
    reaching the base of the horizontal output transistor. At least you will
    know if the horizontal scan generator is working. This will indicate that
    there is an easier chance to service the horizontal output stage to have
    high voltage.

    The very first thing is to verify that all the voltages are in correct spec
    from the main power supply. This is most important. Simply having 150 Volts
    here and there is not a complete criteria to determine if the set will work
    or not.

    If you are going to start with the set a few dollar investment for the
    service manual is not the end of the world.

    --

    JANA
    _____


    I have just been given an Emerson/Orion 1995 model TC1375A color tv.
    The power relay clicks on and off from the power switch, everything
    else is totally quiet. There is +150 or so volts at various points on
    the chassis when the power is on, but that is as far as I have gone so
    far.

    Does anyone have any experience with this chassis? If so, what should
    I be looking for?

    Also, do you think it is worth spending $10 or so for the schematic,
    considering the age of the set. I got it second hand so I have no
    idea how it was performing before it died, I could do an emission
    check on each of the 3 CRT guns by digging out an antique CRT
    rejuvenator/tester if I can find it.

    Any reasonable/lucid suggestions welcomed.

    H. R.(Bob) Hofmann
     
  3. hr(bob)

    hr(bob) Guest

    I was mostly wondering if this chassis had a reputation for bad
    picture tubes or Horizontal output transformers or something that
    would make spending the time to trouble-shoot doubtful. Since it
    didn't seem to ring any bells here, I'll get the schematic from a
    place in Canada that only charges $9.00 USA and go from there. I have
    a Tektronix scope, been using their scopes since 1957 (not the same
    one), so I shouldn't have any problems once I get started.

    Thanx for the comments.

    Bob Hofmann
     
  4. Ken G.

    Ken G. Guest

    Before any schematics or scopes i would sit down and test a few large
    and low ohm resistors and the horiz osc coil and horiz transistor . I
    dont remember seeing any bad picture tubes in that age of emerson stuff
    However if the circuit board has bad dark spots under & around big
    hot resistors the set probably has alot of mies on it .
     
  5. b

    b Guest

    check eserviceinfo.com for the manual - free- before buying anything
    and the fault finding tips at highlandelectrix.fsnet.co.uk - good
    luck.

    b.
     
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