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Re: Clicking and powering off
That's just the relay switch in the power supply trying to come on. Because it clicks right off it sounds like you may have a short in the circuit (power supply or high voltage). Get it looked at by a professional.
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There could be many items that can cause that symptom. However I always assume convergence on any rear projection which can easily be checked by unplugging the convergence amp board and then plugging in the set and press power , if the set powers up turn it back off, and you will know the convergence ICs and associated resistors on that board have failed. Although its easier to replace the board unless you have good soldering skills. I am pasting a pic of the board which is suspended above the main chassis just mark the wires then unplug the set from the wall first, but then unplug the wires from that board and then try powering up the set.if you need further assistance , respond to this same post
Have you checked the power cable or the back cover of your television? Often times, customers forget to plug their television in after a repair. The back cover for most DLP or LCD projection televisions have a sensor as well that will keep the television from turning on. If there is still no power after the steps below, you may have a problem with your power supply module.Consult your owner's manual or a service technician for assistance..
If the previous advice wasn't helpful, try this: Do you hear your ballast "click?" The ballast is what powers the lamp. Initially, UHP lamps need to be jump-started with a lot of energy. The ballast will make a clicking noise as it starts up the lamp. If there is no clicking noise, there may be no power to the ballast or the lamp.
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.
Your problem more than likely lies in your lamp. The whirring noise you hear is the ballast trying to fire up the bad lamp. The lamp part # for your set is TY-LA1000 and can be purchased online at vance baldwin. This is something you can easily replace yourself and your owners manual will give you instructions. Hope this helps
had a 51" GE rear projection donated to myself. While off and power button pressed there was a clicking noise from the front of the unit. Rear cover was removed and it could be observed that the hv splitter had a crack in the casing and the power was arcing out of the splitter.
I purchased a $72 dollar hv splitter, i read that the $20-$30 dollar one would break within a year, and the unit powered up no problems.