Question about JVC AV-20D303 20" TV

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JVC AV-K21T: TV goes off by itself

JVC AV-K21T: Display "squeezes" vertically to the middle & tv goes off with timer led flashing. Message "X-Ray" appears sometimes. Power needs to be recycled with a gentle tap on the side in order to get display again. Problem occurs several time before tv gets back to normal.

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  • JVC Master
  • 8,457 Answers

U know how to solder right?Take the backcover off take back of the handle screw driver taps where the part said it flickker or video back on, resolder that.

Posted on Sep 27, 2009

  • allison402 Nov 25, 2010

    Chu3505 - please could you explain this more clearly in English for me - your directions are difficult to understand. Thanks

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Posted on Jan 02, 2017

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How do I fix my Jvc the screen won't power on. When I reset it the lights on the buttons light up...but shut off right away. It has power because the red light on the bottom left corner stays lit.


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Jan 18, 2016 | JVC Televison & Video

1 Answer

I have a JVC TV AV-21DTG2 the TV goes on protection mode as soon as I switch on the mains power


The power supply regulator section circuit has to be troubleshooted. There might be some shorted component/s. It is a skilled work. You must have sound knoledge in electronics to do this work.

Apr 24, 2012 | JVC AV-32D305 32" TV

2 Answers

Tv will not come on. timer light flashing


did you try setting the clock s per manual
that the only solution I can think of or call the Manufactor

Good Luck

Nov 15, 2009 | JVC AV-27D502 27" TV

1 Answer

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

1 Answer

Jvc tv av-32d502 timer light is flashing will not turn on


Hello, I am a tv tech. I worked on a JVC AV-32D502 today. Problem: led flashes / no power or picture at all. Same as trobertson52's set. The microprocessor is bad in my machine. trobertson52, if your sets' relay does not click when the power button is depressed you most likely have the same problem or the standby power circuit is at fault. That circuit supplies +5 volts to the micro.

Edtal you have a different problem with your machine. Your machine is going into shutdown. A number of circuits could cause this and would need to be looked at by a technician to determine exactly which circuit is at fault. High voltage transformer (HOT) \ Vertical Circuit \ Power supply are the most likely causes.

barneyinNC

Sep 25, 2008 | JVC AV-27020 TV

2 Answers

JVC 27" D series


there is another problem that requires a tv repairmans expertise when the timer light flashes continuosly ,and the power is not restored.

Apr 21, 2008 | JVC AV-27D502 27" TV

1 Answer

TV will not stay on


HI DrRome:
Sorry , I would think that the vertical circuit has failed. you will have to take it to a repair shop.

Feb 22, 2008 | JVC AV-27230 27" TV

1 Answer

JVC AV-F29MX3


You have what sounds like a failing vertical output IC also could be some bad capacitors. If you are able to solder it would cost a few dollars to try this and see if it fixes it. If not you would need to replace the whole board itself and that could cost you a little bit more money. If you need a tech it is time to get rid of it you are looking at at least 200 dollars for repair.

Feb 06, 2008 | JVC AV-F29MX3U 29" TV

1 Answer

JVC TV- MODEL AV-K21T.


it was not necessry to replace so many parts if you go as per proper procedure.please proceed as 1 isolate horizontal output section from power supply & make power supply ok. 2 if it becomes ok check hor osc,driver&h/output section. 3 if it is ok connect power input to hor.section which was isolated. 4 check for loose contact or print. 5 put on tv .

Sep 22, 2007 | Televison & Video

3 Answers

TV "X-Ray" Error


HI Matt of south Africa Every Tv has an xray protection circuit.that circuit is faulty os you will have to take it to qualified tech to repair your tv.good luck.

Apr 26, 2007 | JVC AV-A21M3U 21" TV

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