Well turned on the tv set today and all it did was hear it turning on then 3 seconds later it turn off but the tv does not want to stay on what could be the problem? the serial# of the chassis is itc222.
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hold the menu and input/device buttons for 5 seconds and it will blink you a 2 digit code 1-2 normal operation 2-3 i believe is short circuit protection = probably a convergence failure here is a link to my tutorial http://www.fixya.com/support/r5001731-convergence_diagnosing_convergence Let me know if I can be of further assistance.
set has a self diagnostic---after set does shut down press and hold MENU AND DEVICE(INPUT) buttons on front of set for 5 seconds----if 2 blinks, a pause and 2 more blinks: this is short protection error code---The set does use 2 Stk394-250 and each is protected by a pico fuse in the power supply---if either fuse is blown the set will shut down(it detects no voltage or missing voltage;) It is not uncommon for a shorted IC to cause this problem; if you locate the STK's look carefully at the resistors around them---if any are discolored or burnt---you have found your problem.
What a great tv this is Mitsubishi did a fine job making this one, but......only an authorized mitsubishi servicer should repair it. This set records diagnostic led codes that the technician receives to help determine where the problem might be, not the problem, but in which circuit it might be. The one thing to try is, unplug the tv , let it set for a minute, plug it back in , turn it on and hope it reset the micro. Next , call for mits. service.
I believe this may be a HV/LV power supply problem since this is a common issue in this RCA ITC222 chassis, I posted this earlier and I beleive that it can help you,
Hello This is a common problem with the ITC222 chassis, I would check CP120, CP140, CP150 to see if they are bad I suspect CP150 is the one that is bad. Its value is 2200uf 16VDC. It is located on the same board as the IHVT and is in between the Heat sink in the middle of the board.
I would also like to say that if possible you should get a qualified TV Technician to repair this set for you, due to the nature of this problem and the dangerous voltages present.
I hope this helps,
A problem in a certain parts or IC's on the board. You need a support technician for him to have a test inside the equipment. All parts have to be undergo into tester device to determine which is faulty.
If still under warranty or if you have no electronic repair experience you should take the set back to the shop or to a repair person. TV's are very hazardous to service. Even when plugged out, TV's can store very high voltages.
Very possibly an electrolytic capacitor gone bad. You'll need to work on that, and then readjust the set. Not a major repair.