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Tuner ?

Discussion in 'Electronic Repair' started by Rambling Man, Nov 27, 2004.

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  1. Rambling Man

    Rambling Man Guest

    I'm not that involved - really not even enough to say using one - with VCRs.
    A friend of mine asked me about a project he has in mind. He has a LCD
    "display". He wants to know if he could take the Tuner out of a VCR, hook up
    the necessary voltages and cables for the Antenna in/out, as well as
    video/audio - to the LCD display, to make it work like a TV? If not, any
    alternatives?

    Your thoughts?

    Thanks,

    RM
     
  2. Kim

    Kim Guest

    Wow...what a brilliant idea!!....so whatcha gonna call it ...a magic picture
    machine?....or maybe a phantasmagorical moving picture projector???....or if
    all else fails....maybe even a TV!!!.
    So lets get this straight...you want to know how to build a lcd tv, using a
    vcr as the tuner!!!!!!????????.
    Ok, first spend a couple of months, and a couple of thousand $'s...or walk
    down to wal-mart and buy one.
    Kim
     
  3. NSM

    NSM Guest

    | I'm not that involved - really not even enough to say using one - with
    VCRs.
    | A friend of mine asked me about a project he has in mind. He has a LCD
    | "display". He wants to know if he could take the Tuner out of a VCR, hook
    up
    | the necessary voltages and cables for the Antenna in/out, as well as
    | video/audio - to the LCD display, to make it work like a TV? If not, any
    | alternatives?

    What on earth would be the point of this? I've seen small TVs at Wal-Mart
    etc. for $30 and up. Way easier.

    This is like strapping a surfboard across the roofrack on a VW Bug, filling
    it with jet fuel and expecting it to fly. Homer Simpson would be proud.

    N
     
  4. Rambling Man

    Rambling Man Guest

    Hey, it wasn't "my" idea! I said I wasn't up on VCRs. I just asked the
    question as posed to me to ask! With all the stuff I see in this newsgroup,
    hell I thought maybe someone would have thought of such a thing. Oh well, I
    suppose that idea was far fetched too!

    RM
     
  5. Rambling Man

    Rambling Man Guest

    FWIW, I suggested something on those lines. They already have the LCD screen
    hooked up to a DVD player or whatever and a camera. They thought they could
    just do the "TV" thing by adding a tuner. I suppose I should have mentioned
    that before. And, this is all "mobile". I guess size was an issue also,
    along with the previous sentence of using what is already available.

    RM
     
  6. NSM

    NSM Guest

    | FWIW, I suggested something on those lines. They already have the LCD
    screen
    | hooked up to a DVD player or whatever and a camera. They thought they
    could
    | just do the "TV" thing by adding a tuner. I suppose I should have
    mentioned
    | that before. And, this is all "mobile". I guess size was an issue also,
    | along with the previous sentence of using what is already available.

    I'm guessing they have an in-car DVD player? It's not just a tuner, you need
    an IF strip and an audio system - a lot of junk. IMO it's too much work. A
    lot of those tiny (3" - 4") TVs run off dry cells or a 12 V auto plug.
    Easier.

    N
     
  7. Rambling Man

    Rambling Man Guest

    I "totally" agree..... I just thought I'd ask anyway. Just goes to show, "I"
    don't claim to know it all! I'm not one to "assume".
    So, I ASK! Yes, you're correct in their set up. You gave me an idea too, to
    work with and report back to them.

    Thanks!

    RM
     
  8. James Sweet

    James Sweet Guest


    You didn't mention that before, a lot of people ask if they can use a laptop
    LCD panel for something and the answer is generally no. If the LCD already
    works on a DVD player then yes you can hook it up to a tuner, some tuners
    even output composite video directly.
     
  9. Rambling Man

    Rambling Man Guest

    Sorry, my error. It is late and I was not thinking correctly. I should have
    included that one last part. I've seen the posts you refer to. Probably why
    they thought it was possible. Not being to familiar with the "computer" TV
    tuners, "I" had even suggested trying that, but they said no way to control
    channel change. I think the 5" tv would be a lot easier and cheaper - as one
    other mentioned. UNLESS of course one of the VCRs he has available has the
    required outputs OR such a tuner can be bought reasonably - to equal the
    cost of a 5" tv or such.

    Thanks

    RM
     
  10. Kim

    Kim Guest

    My sarcastic response was based on the fact that it sounded like you had a
    raw LCD screen, with no driving electronics attached, and were attempting to
    reinvent the wheel.....or at least the TV.
    Clarity in questions my son, is what you seek!.
    Seriously, I was at the Home Depot (!!??!!) yesterday and saw the cheapest
    LCD combo 20 inch TV/Computer Monitor yet.
    It was around the $280.00 mark.
    Yikes....Consumer electronics at Home Depot.....next thing you know Girl
    Guides will be selling Skil Saws
    Kim
     
  11. Kim

    Kim Guest

    The other good thing we have learned here to night is that my spell-checker
    will actually correct the spelling on the word phantasmagorical.
    Amazing!.
    Kim
     
  12. For many people, walking down to Wal-Mart would be the obvious solution.
    To those who strive for technical knowledge and a challenge, building a TV
    out of salvaged parts is irresistible.

    The answer to the original question is that it might be possible depending
    on what the input signal format is for the LCD panel and how much effort
    one is willing to put into the project.

    --- 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 is ignored.
    To contact me, please use the Feedback Form in the FAQs.
     
  13. It's an absolutely appropriate question. Ignore the responses that suggest
    this is the most stupid ever asked. :)

    Sure, it's easy to go and buy an LCD TV. It could be much more rewarding
    to put one together from parts, even if it does end up looking like something
    held together with duct tape and bailing wire. :)

    --- 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 is ignored.
    To contact me, please use the Feedback Form in the FAQs.
     
  14. Rambling Man

    Rambling Man Guest

    I'm top posting this reply since I didn't want to water down either response
    or my original!

    I guess the old adage plays out.......... I can't recall the exact words (I
    just woke up and it's been a "long" night!) - the only dumb/stupid
    question - is the one that wasn't asked. One won't know unless they don't
    ask. And as I said, I don't like to "assume", we all know where that gets
    us! And I never claimed to know it all! So, I ask!

    Thanks for the replies, I shall forward them. And next time, try to include
    "ALL" info. I do apologize.

    Thanks,

    RM
     
  15. NSM

    NSM Guest

    |
    | > Hey, it wasn't "my" idea! I said I wasn't up on VCRs. I just asked the
    | > question as posed to me to ask! With all the stuff I see in this
    newsgroup,
    | > hell I thought maybe someone would have thought of such a thing. Oh
    well, I
    | > suppose that idea was far fetched too!
    |
    | It's an absolutely appropriate question. Ignore the responses that
    suggest
    | this is the most stupid ever asked. :)
    |
    | Sure, it's easy to go and buy an LCD TV. It could be much more rewarding
    | to put one together from parts, even if it does end up looking like
    something
    | held together with duct tape and bailing wire. :)

    I've built more than my share of one-offs, prototypes etc. You have to know
    what's really reasonable. You'd wind up with so much 'guts' from a TV or VCR
    that it isn't worth hand building. At most I would try to add video and
    audio outputs from a 12 V TV rather than try to scratch build.

    "A man's gotta know his limitations" - Dirty Harry.

    N
     
  16. NSM

    NSM Guest

    | For many people, walking down to Wal-Mart would be the obvious solution.
    | To those who strive for technical knowledge and a challenge, building a TV
    | out of salvaged parts is irresistible.
    |
    | The answer to the original question is that it might be possible depending
    | on what the input signal format is for the LCD panel and how much effort
    | one is willing to put into the project.

    I'm guessing they have an in car DVD system and want to add a tuner.

    N
     
  17. jakdedert

    jakdedert Guest

    Mobile tuners are available from several sources. Try MCM or PartsExpress.
    OTOH, *if* you can find an old used 12v VCR (most were merely players), and
    *if* the mobile DVD setup has line video inputs; it's a piece of cake to
    simply hook the parts together. (If you can find the VCR, keep it in one
    piece and gain the added functionality of being able to play tapes.)

    jak
     
  18. Rambling Man

    Rambling Man Guest

    Hello All!!!!!!!!!!

    Well, they went out today and bought the smallest "VCR" they could find. So,
    we'll see how they make out with that.
    Thanks for all your contributions. I did forward them prior to the purchase.
    Not sure where they're going from here, but we'll soon find out. I'm
    guessing a TV too!

    RM
     
  19. t.hoehler

    t.hoehler Guest

    And if you need a mobile setup, a 200 w el cheapo inverter will take care of
    that 120 vac el cheapo VCR. I use on in the van all the time, along with a
    small telly, works like a hose. Today's modified sine wave inverters are
    just plain outstanding! You had to grow up in the fifties like me to realize
    how difficult it was to operate 120 vac equipment in the car. A real PIA
    with the old vibrator units, noise, buzz, hash, you name it, it had it!
    Regards
    Tom
     
  20. NSM

    NSM Guest

    | And if you need a mobile setup, a 200 w el cheapo inverter will take care
    of
    | that 120 vac el cheapo VCR. I use on in the van all the time, along with a
    | small telly, works like a hose. Today's modified sine wave inverters are
    | just plain outstanding! You had to grow up in the fifties like me to
    realize
    | how difficult it was to operate 120 vac equipment in the car. A real PIA
    | with the old vibrator units, noise, buzz, hash, you name it, it had it!

    First one I worked on used tubes to invert from 250 VDC to VAC!

    Of course I worked on lots of vibrator car radios too. Then there were the
    hybrids with tubes with 12 volts on the plates and transistors for the AF
    section. Lotta weird junk before transistors could do it all.

    N
     
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