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JVC TV - horizonal lines at bottom of screen



Jan 1, 1970
Hey all... I've got an old (1996?) JVC AV-27BP6 27" television with

After it warms up for a minute or two, some horizontal black line
start to appear on the bottom of the screen. They flicker and scroll
bit, often reaching halfway up the screen and distorting the picture
There are anywhere from 5-25 lines, sort of a venetian blind effect
Hitting the side of the tv usually makes them go away for 5-10 minutes
but lo and behold they return!

I know that this is an oldish tv and is probably not worth doing an
major repairs to, but I'm wondering if this is something that I coul
fix myself without being an expert (I do have some very rudimentar
electronic repair skills). I'd like to avoid replacing the tv becaus
besides those lines the picture is great, plus I'm on quite a tigh
budget these days and really only use it occasionally for movies
Because the hitting seems to work it makes me think there's a loos
connection somewhere...

If anyone is familiar with this sort of problem and could point me i
the right direction for a fix, I'd be *greatly* appreciative

Jerry G.

Jan 1, 1970
It is best to indicate the manufacture name and model number.

In a general context, troubleshoot for thermo sensitive capacitors in
the vertical deflection amplifier section. It is also possible because
of the age of your set, there are a fair number of capacitors that are
going high in ESR, and will eventually cause other types of failures.

Jerry Greenberg


Jan 1, 1970
I was told the problem is quite possibly a loose vertical ic connection
spoke with two people with similar models who fixed it by applying
little bit of solder.... since I have nothing to lose there, figure
I'd give it a shot. But how to figure out which part that is once th
tv's opened up? Are there any telltale signs I should look for?


Jan 1, 1970
This problem you are seeing is most likely NOT a "loose vertical ic
connection" and is probably NOT going to be solved by "applying a little bit
of solder" ..... More than likely, as others that have replied to your
original post have indicated, the problem is caused by faulty and/or high
ESR electrolytics in and around the vertical deflection circuitry. Not a
difficult or expensive repair at a shop but not necessarily a do it yourself
job for a rank novice..... particularly since televisions can pose a
dangerous electrical shock hazard even when unplugged from the AC power.
TAKE it to a shop for at the very least a repair cost estimate so you can
make an intelligent repair decision with facts instead of Internet guesses.