Question about RCA 36V430T 36" TV
We were watching tv the other night and suddenly the tv just shut off. I tried unplugging, waiting and replugging, but it didn't work. I can hear a slight hum coming from the set, but it won't even attempt to come on. Any ideas? Model# 36V430T, Serial# F043C21OM, Chassis# ITC008MYN. Thank you.
Almost all these sets have the exact same problem. It dead and you hear a slight high pitched noise there are two parts bad: 1.) Location marked on board is TLO35---Horizontal output transistor; part number (it will be cheaper as a generic part--Google the part number) part number is: 230760.(should be about 6 dollars) 2.) Location marked on board is LL05--High voltage transformer with large red wire coming out of top that goes up to the bell of the picture tube. Part number for this is 262342; original part no longer available but several sources including one I use on EBAY will have it and most likely the transistor as well---cost for generic replacement is about 20 dollars. Both parts are soldered into the main circuit board so the transistor should be checked first---if shorted---change both and 97% chance set will return to operation. Let me know if you have questions or need to know where to buy the parts----I have seen and fixed about 40 of these sets made from 2003 through 2006 and all have this problem. SD TECH
Posted on Feb 11, 2010
Based on your message, your TV has a bad high voltage section. Probably the HOT (Horizontal Output Transistor) failed or shorted and it either killed the high voltage or there's a current fluctuation; that is why the picture went, but sound remained and/or humming. Then, when you turned it off or unplugged it the protection circuit remained active.
Once the high voltage fluctuates, that's the time the TV would create a buzzing sound.
There's a 75% probability it will require a high voltage and horizontal deflection amplifier overhaul. The normal cost of that should be less than $200 if you take it in.
For this problem, I would suggest to contact a repair tech and have him take care of the problem.
Good luck and have a good day!
Posted on Feb 08, 2010
Before you Proceed, Disconnect the Power Supply, Unplug the Cord and then try to plug in after few minutes, say 30 minutes. If the Problem persists, more likely it's a Faulty Power Supply Board.
You need to have some electronic Experience to Open the TV and then you need to locate the Board. Once you find the Board, you need to pull the wires and try to Look for Swelled / Bulged / Leaked Capacitor. You need to go to Radio Shack or Order Online and then replace that. Once replaced, that would fix the issue. Usually, Bad Caps do have Ammonia kind of odor.
Let me know, if needed further assistance.
Hope i helped you.
Thanks for using ' Fixya ' and have a nice day!!
Posted on Feb 08, 2010
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Posted on Jan 02, 2017
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