I have a JVC AV-27020 TV gived to me by a friend for this problem: - Once plugged in 120 VAC outlet, the TV set opens a couple of seconds with the front LED lighted steady. The CRT filament reddish (on) and closes down after with the front LED blinking. The CRT filament turns off and results as no image, no sound but the screen seems to be alive with static electricity. If we disconnect the set from wall outlet and replug, the cycle remains one more time as shown above. I remarked some diodes, resistors and capacitors with burnt, disappeared solder or totally unsoldered probably by the heat of the leads of componants in the deflection section near the FBT. I have rebuilt these solderings and the trouble remains one more time! Wich is the best solution to solve this problem? A diode?, A capacitor?, A resistor or a transistor (Horiz, Vertical Out.)? Thank You very much! I count on your news! Lhupa
In jvc av-27020 we called that problem as on timer.your red LED indicator blinking.the reason is your vertical ic is defective if your vertical ic is la7832 replace it with la7840 if there is no la7832.that is most common cause of blinking in jvc 27020
Sounds like a bad main regulator IC.. Try putting a 100 watt light bulb across the main AC fuse, turn on the set and see if it will stay on longer. If it does, replace the main regulator iC. If it does not, then it could be almost anything in the sweep section of the set, and or in the regulation circuit of the power supply. Look for slightly swollen capacitors in the set. good Luck please do not forget to rate this thread.
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Thank you Techman for your prompt service, news and hints!!! I will experiment your test with pride!
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