[Tfug] OT: Troubleshooting a busted LCD TV (or Electrical Engineering for Dummies)

[Christopher Robbins]

*sigh*

I figured as much...My IBM AC adapter is 16V.  I gave it a shot and still no
dice.  I've got some audio, but no working video.

Apparently this isn't an isolated issue with this model though, and I guess
a $79 inverter board (or new caps) will take care of the whole thing.
(http://www.badcaps.net/forum/showthread.php?t=1038)

Time to break out the screwdrivers!



On Fri, Aug 22, 2008 at 12:11 AM, Jim March <1.jim.march at gmail.com> wrote:

> Sorry but I'd be willing to bet 15.45v ain't your problem.  I've seen all
> KINDS of weird DC voltages still run things.
>
> Jim
>
> On Fri, Aug 22, 2008 at 12:00 AM, Christopher Robbins <robbinsc at gmail.com>wrote:
>
>> A friend of mine gave me a 17" Dell LCD TV that doesn't
>> work anymore...Thing is getting power, but it doesn't output any
>> video. You can see a green led when it's plugged in, but I'm
>> not getting any video on it. He told me he can hear audio on it,
>> but video hasn't been working at all.
>>
>> I whipped out my trusty Craftsman multimeter to give the AC adapter
>> a test...It's rated for 16V output, but it's only getting about 15.45V.
>>
>> My question is - can .55V really make that much of a difference?  I assume
>> you'd want to get an exact 16V out of the thing for it to work, but does
>> it
>> make that much of a difference?
>>
>> I'd like to figure out whether it could be just this before I dig deeper
>> and deeper
>> into the innards of this thing...Especially if a $20 power supply could
>> mean the
>> difference between a working and non-working LCD TV.
>>
>> Thanks!
>>
>>      - Chris
>>
>> --
>> Christopher P Robbins
>> Systems Programmer
>> Department of English - University of Arizona
>> 1423 East University Blvd.
>> Modern Languages, Bldg. 67, Room 422
>> Tucson, Arizona 85719
>> Phone: (520) 621-3496
>> Email: robbinsc at gmail.com
>>
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>
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-- 
Christopher P Robbins
Systems Programmer
Department of English - University of Arizona
1423 East University Blvd.
Modern Languages, Bldg. 67, Room 422
Tucson, Arizona 85719
Phone: (520) 621-3496
Email: robbinsc at gmail.com
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