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Jvc tv switching off and on

Hi Ronnie thanks but could you please explain what is meant by power supply going out

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The main power that supplies power to the whole unit...its in the back of the tv

Posted on Aug 27, 2008

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2 Answers

Tv will not turn on after a power outage


Hi Filipe,

It could be just a blown fuse on TV. Please go check and replace with new one if it busted.

Regards

Sep 29, 2011 | Mitsubishi WD-65736 Television

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I am trying to locate the power supply board on jvc HD-56FC97 but am not sure where it is. Can someone please help, thank you. Power light and lamp/program light blink together when tv is powered on. I can...


If you have never replaced the lamp then I suspect that first as fans starting up means the power supply is working ok. The lamp may look good but is failing to fire. The part number is TS-CL110UAA.

Mar 02, 2010 | JVC HD-52G786 52" Rear Projection HDTV

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JVC Model av 48p777 I adjust contrast knobs inside tv and now its still blinking and it shuts off like it gets too hot


Hi


Firstly, check for a blown fuse or circuit breaker or a power outage. There is a fuse on the inside back panel that is suspect which is located near the power entry to the back of TV. Some versions were socketed others soldered. If you have already tried hard reset (unplugging and plugging it back after 5-24hrs) and still the issue is not resolved then this is more likely a power supply failure. Most causes of TV failure are due to bad capacitors on either a system board or the power supply. In this case, it sounds like the power supply. You can test the capacitors with a capacitor tester to determine faulty capacitor. You can also test other components like power supply current with voltmeter or multi-tester. It can also be due to the protection circuit that is detecting excessive power or current drain by one of the sections of the TV. Could be the high voltage; could be the deflection circuits; could be the audio amplifier; could be the main power supply itself. All this is only recommended if you have electrical expertise and know how to solder/re-solder the components.


Please do accept the solution if the issue is resolved or else revert for further assistance.


Thanks
Rylee

Sep 27, 2009 | JVC Projection Televisions

1 Answer

Tv shuts off after screen goes red


Good Day sir, the reason why your tv act that way is the switching power supply. The power supply regulator, cannot supply the current needed by your TV. these can be caused by several factors. a faulty switching regulator, low power, or filter capacitor leaking, check the voltage across the VCC after the regulator, if possible the switching transistor. and the ic that controls the pulse they are usually near each other. for safety reasons, better consult your service personnel. hope this helps. if you need more assistance, do let me know. thanks

Jul 28, 2009 | Projection Televisions

2 Answers

I purchased a JVC LT52X579 March 30/09. The TV would phase out by itself and then restart by itself. Some times it would remain on and could be cut off only by unplugging it from my sudge protection...


Hi,
Please unplug TV from wall socket for couple of minutes, replug back in and turn ON.
If still does not power up, try it in another wall socket.
Also check standby/ power light flashing or its solid at TV.
If standby light is flashing or its not lit then TV got power supply problem and requires qualified TV tech. I hope TV is still under warranty so ask for warranty cover to store.
Thanks.

Jul 24, 2009 | JVC Projection Televisions

1 Answer

Please help!!! Problem with JVC DLP TV


Hi,
How old is your TV?
Lamps in DLP TV has specific working hours and physically lamp will look good but won't give light ( actually consume more current and protection circuit stops power supply)
Thank you.


Dec 04, 2008 | JVC HD-52G786 52" Rear Projection HDTV

1 Answer

Power issue, clicking noise, turns off


The clicking is the power on relay closing and opening. This happens because the TV has several built in safety systems that will detect and over voltage and over current load situation.The power supply starts up for an instant, senses and overload of either or both kinds and then the safety switches trigger a cutoff. When this happens the power supply will not start up again because another circuit called a latch keeps it disabled. By unplugging the AC cord and trying to start it again releases the latch until the failure triggers it again.
On these TVs the power supply is rarely the cause of the shutdown. Something further down inside the TV has failed. Replacing just the power supply will not fix the problem. The most common reason there would be an overload would be in the high voltage circuit that lights up the 3 CRTs, next would be the coils around the CRTs that bend the beams to make the picture. This is normal circuit aging and wearing out. Unless you are very skilled with trouble shooting TVs I would recommend having a service center look at it. An authorized JVC shop would be your best choice because they will have access to the manuals and bulletins and have probably had other similar JVC units thru their shops.

Apr 14, 2008 | JVC AV-56P575 56" Rear Projection...

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