Question about RCA F36674ET 36" TV

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TV Turns Itself Off. What would I have to do to fix this problem? I was watching tv the other night and it turned it self off. when i tries to turn it back on, it cliked on then click right back of three times and then stayed off. I unpluged and tried it again with the same results. Help!!!!

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  • cougarfan Feb 04, 2008

    I have this exact problem. However, trying to turn it on enough times, now all I hear is a chirping that is indicitive of the power circuitry, so I'm guessing FBT failure. I inherited the TV when it had a similar flyback problem and was also chirping. I swapped out the flyback and the suggested resistors and caps (R14704, C14710, and a few others) as well as the horizontal output transistor. TV worked great for about 5-6 months. What could have caused this new FBT to fail? Is there some greater problem I might have that will cause a new FBT to fail again? I'm hesitant to invest in the repair if it's going to just happen again.

  • cougarfan May 11, 2010

    I have this exact problem. However, trying to turn it on enough times, now all I hear is a chirping that is indicitive of the power circuitry, so I'm guessing FBT failure. I inherited the TV when it had a similar flyback problem and was also chirping. I swapped out the flyback and the suggested resistors and caps (R14704, C14710, and a few others) as well as the horizontal output transistor. TV worked great for about 5-6 months. What could have caused this new FBT to fail? Is there some greater problem I might have that will cause a new FBT to fail again? I'm hesitant to invest in the repair if it's going to just happen again.

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That set is a CTC197 chassis with a common problem - flyback or more commonly referred to as the FBT...
The FBT is a high voltage transformer which delivers a great deal of voltage to the crt to light the tube. The FBT is RCA p/n# 237502 and a ring test can confirm its failure. Another shortcut technicians use is to unsolder the collector of the HOT and power the set. If it powers with up and has audio you're in business, just replace the FBT and it's recommended to replace R14704 its an 82k ohm- 1/2w resistor and C14710 a .01/1kv cap as well. I believe if you order these as a kit, (ie: original RCA FBT), the two other parts are included - but ask to make sure.
You might also check for continuity across E & B of the HOT with a multi-meter while you're in there and if you get any resistance at all the HOT is shorted also... Or for simple reliability just replace it anyway.
Hope this helps!
Bill

Posted on Nov 13, 2007

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