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

Christopher Robbins robbinsc at gmail.com
Fri Aug 22 00:00:59 MST 2008


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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