Question about JVC AV-27050 TV
Jvc av 27050 television, thin horizontal line across middle of blank screen. used to correct by wiggling coax feed, now it is worse (wiggle won't fix). removed back, removed a part with the coax connection plus a male RCA and a female RCA. i think this part has a cold solder, can't open to fix. part labeled 0409 811a, can't find this part number listed at partstore.com what is it called so i can look it up by name?
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Posted on Jan 02, 2017
if you havent fixed your problem yet, i had the same problem twice. It turned out to be the vertical hold. i have had the tv for a long time and had three problems. like i said twice the vertical hold and now i have no picture with a blinking light. i may give up on it and get rid of it
Posted on Nov 14, 2010
The trouble is not in your tuner, it's in the set's vertical output circuit. A very common source of trouble is bad solder connections to the vertical output integrated circuit. When you wiggled the antenna connection before, it flexed the circuit board enough to get the connections working, but now it's not. A few minutes with a soldering iron very likely would get the picture back, although it's possible the IC itself has gone bad.
I believe that on the chassis in this set, the vertical output IC is an LA7832, mounted on a heatsink near the rear of the circuit board. I think it's marked IC421 on the board. If you or someone you know is comfortable with electronic soldering, you can try resoldering the connections.
Posted on Jan 31, 2011
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