The LED in the Power button blinks a few times and I hear a few clicks inside the TV (perhaps a relay?), but the set shuts down before it powers up. Screen is dead. The fuse on the 115VAC input has good continuity. This problem may have been caused by a power surge from a lightening storm, but I can't place the timing. I suspect a problem in the power supply but don't have a service manual. Can someone please provide me with test points and voltage values in the power supply so I can try to isolate this problem? I repair military circuit boards and power supplies for a living but don't have the schematic or manual for this TV. Does this TV have a service mode where it will display error codes? If so, how do I enter the service mode? Any help would be greatly appreciated. Is the problem most likely in the power supply or could something else cause these symptoms?
Thanks in advance!
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Re: RCA Model F36450 Chassis ATC113CA1 won't power up
No sir it probably isent a power supply problem as in these sets it wouldnt act like that. First thingm to check since you say your a service tech, is in the horizontal output check and see if the horiz. output transistors shorted. If its not then check a small coil off the base of the horizontal output transistor. its really the base drive coil so take it out and scrap off the ends BOTH ENDS and reinsert and also resolder the horizontal driver transformer. This may or may not fix your problem But if it dosent order if you think ther sets wrth it the flyback transformer as this is a big problem in these sets if the for mentioned things did do the trick. follow the kit instructions that come with the flyback transformer!! Dont take any short cuts. Make sure you do take out the horizontal output transitor or at least unsolder all the leads when tesating it for a short. Good luck
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Blinking of power LED are fault indications. Count the number of blinks occur at one time switch on. For this number, you can get an idea about the faulty section circuit inside it. It will make troubleshooting much narrower. If you wish to get more details about the blinking codes, check this link. Pull up older posts there.
it is a bad fan. it also could be a power supply. Quite often the real problem is dirt clogging up the fan(s) to the
point that they need to be replaced. Operation of the set in a dirty
environment is not a good idea
The horizontal output transistor is most likely shorted, it's a 2sc5588 Rca Part # 259899 and there are a couple of subs available for that too.
The slight squealing you hear is the feedback voltage on the hot transformer as the B+ tries to increase and the s/d circuit cuts it off. Not an expensive repair...
Will not power, led blinking
check R640 (1K 1/4w) if open replace ic600 (8-759-670-30)
Standby led blinks slowly, a few times, chassis won't start up
I changed the vertical deflection ic type TDA8170 and I measured two
leaky capacitors in the power supply. Better to change all 4 capacitors
in the power unit, everything was then ok !
This could cause a problem, because modern TVs and most other entertainment electronic goods, have a small kind of computer chip, but there should be a Reset button probably inside the set!
If you feel confident about computer chips you may be able to find the button by tracing the circuit.(Disconnected from the mains).
Another idea is if there is a small button cell or battery inside, then try disconnecting it for a day.