My RCA TV (which is quite old) recently started to act up. When you first power it on everything is fine, but after a short time the screen shrinks to a single horizontal bar at the center of the screen. This will not go away even if you turn the power of and then back on unless you leave it off for hours at a time. I would really like to be able to fix this if anyone has any ideas.
Horizontal Bar
Feb 13, 2007
3 Replies
There are components, especially electrolytic capacitors in the vertical circuit area that have become thermo sensitive. I usually find these using freeze spray and a heat gun. After locating the ones that react to temperature shift, I replace them. If any parts fail permanently, then more complex troubleshooting will be require to service the set.
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Please give us a chasis # (usually starts with CTC then a number), that way you may get intelligent help. Since you said you had an OLD RCA TV try replacing the 6CG7 vertical oscillator tube.
number),
try
:)
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