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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
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
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.
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.
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.