Question about JVC AV-A21M3U 21" TV

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Tv trouble shooting

It is JVC AV-21FMG3B. the power led keeps blinking. but it doesn't turn on. please help me find the problem.

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Re: tv trouble shooting

1)Check secondary fuse devices. 2)Check horiz output xistor=shorted? 3)replace w/equiv.or better part. 4)Check solder connects in horiz drive circuit. Replace small electrolytic filter cap in base circuit of horiz o/p==horiz drive xformer and xistor area,typically 1mf/160v,C531? 2b)not shorted==do step 4 anyway 5)still blinking?==check vert o/p,audio o/p and regulated o/p's

Posted on Oct 02, 2007

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We have an JVC AV-27020 tv that only turns on from being plugged in. Once on it stays for about a minute or two before it shuts off. What do we do? Please help!!

t.s.s. log for jvc televisions -
JVC, AV32D200, Dead, Television will not turn on. ... rectifier diodes D922, or D923 the voltage never pops up as soon as the TV is plugged in. ..... deflection collapse after 30 seconds vertical IC okay 9volt regulator being pulled down to 3 ... JVC,AV27020, SYSTEM CONTROL, AV27020 Tech only getting a blue screen no ...

180125 T.V WILL NOT STAY ON: JVC AV-27F702 27" TV
Detail: I HAVE A T.V. THAT WILL ONLY STAY ON FOR ABOUT 5 SECONDS BEFORE ... a friend, was working when it left his house, I have place on tv stand,plugged it in, ... My jvc av-32890 makes a click and shuts off 95% of the time. ... JVC AV-27020 TV Blinking LED, Static Electricity on tube but no sound and image.

Nov 08, 2015 | JVC Standard (CRT) Televisions

1 Answer

Jvc- 36f702. Powers up then shuts down right away and the red led blinks on the front panel?

Jvc- 36f702. Powers up then shuts down right away and the red led blinks on the front panel?

Dec 03, 2009 | JVC AV-36F702 36" TV

1 Answer


Page 40 on the PDF link below may help - Ask me if you need further assistance.

Feb 28, 2009 | JVC AV-32230 32" TV

2 Answers

TV turned off itself and timer light (red) keeps blinking

The TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.

If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

Feb 15, 2009 | JVC AV-35750 35" TV

2 Answers

JVC TV AV-32870 will not turn on. blinking timer light

Worth taking it in since it is hard to find a new TV for less than $300. I have a 32 inch JVC iart that for about 2 years would turn itself off and the timer light would blink. Only thing that worked would be to disconnect and turn back on. Eventually, the tv "popped" I could smell something that burned out and within 3 weeks tv went "dead" Took it to a tv repair place and replaced power unit for $150. I had similar problem with a 19 inch Philips and that tv has been going strong for 4 years since repair.

Good Luck

Oct 17, 2008 | JVC AV-32820 32" TV

1 Answer

JVC AV-35750 TV

I changed capacitor C926 (1000Uf 16V) on main board. It solved the problem. I went with 1000uF 63V as it was readily's okay to go with higher voltage. It was hard to fit it on because of the larger size but it worked.

Jul 28, 2008 | JVC AV-35750 35" TV

1 Answer


try resoldering vertical ic pins

Apr 19, 2008 | JVC AV-32260 32" TV

1 Answer


How old is this TV?
As Tv's age, the high-voltage suffers and they get darker. You can turn up the screen adjustment on the flyback transformer and buy some time but:
My experiance is to not put money into a TV that is over ten years old. TVs stress out their electronic components worse than almost any other electronic product. After 10 years, there are so many parts that are ready to fail that your are probably wasting your money trying to get any more life out of it.
Another option is to wholesale replace the main board from an outfit like Module Exchange at 972-298-1212
Be careful on buying a new one though. Often times, these new technology ones are much worse. Always Google the model number of the set you intend to buy and add the word 'repair' or 'complaint' to see if it is one of the many models that are customer service nightmares being produced by even the most reputable companies today.
Hope ya fix it!

Jan 30, 2008 | JVC AV-21meu 21" TV

4 Answers

Wont power up, red blinking light (on timer)

Refer to the trouble-shooting section of your manual. Usually, with this technology, the lights (Lamp/Temp) on these sets are also used at diagnosis/fault indicators... so, your manual should tell you what a flashing TIMER light represents. If the manual, doesn't provide this information, then ring JVC and ask one of their technicians.

Jun 26, 2007 | JVC AV-36F702 36" TV

2 Answers

JVC AV-27020 TV Blinking LED, Static Electricity on tube but no sound and image

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.

Dec 10, 2006 | JVC AV-27020 TV

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