Question about RCA F36705 36" TV

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High Pitched noise returns after new parts installed.

I have a F36705 RCA tv that makes a high pitched ticking noise in the back. The TV won't turn on at all. The ticking noise decreases in frequency once unplugged, then goes away completely.
Comment by Toadw, posted on Oct 25, 2007 The service number is F36705YX1. Will I have to do any soldering to replace?


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Try our Premium Assistance plan Solution #1 posted on Oct 25, 2007
By Terryfic
Rank: Master
Rating: 74.56%, 228 votes

Horizontal output transistor is shorted,caused by bad flyback
transformer.If you want to pursue the repair,please give the
service number off back......I will get part # s........T.
Comment by Terryfic, posted on Oct 25, 2007 Both parts soldered in Part #'s 241319 or ASTI 2170 xformer
and 237470 transistor ........T.

I replaced xformer and transistor. The TV worked good for a week but now it is doing the chirping high pitched noise again and won't turn on. I bought the parts from MCM Electronics. Could parts have failed already or did I install something wrong?

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Check the connections at T14101 pin 9 get loose after time and could cause Q14101 to fail again

Posted on Dec 20, 2007

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Use first quality OEM or equiv. transistor, RCA 237470 is
least expensive...............T.

Posted on Nov 10, 2007


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High Pitched Ticking Noise

Horizontal output transistor is shorted,caused by bad flyback
transformer.If you want to pursue the repair,please give the
service number off back......I will get part # s........T.

Oct 25, 2007 | RCA F36705 36" TV

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High Pitched Noise on TV


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TV won't stay turned on, no picture, started making high pitched noise

That high pitched noise you're hearing is the power supply telling you that it has too much of a load on it and lowered its operating frequency which in effect cuts its output way down! Normally you don't hear any thing since the power supply operates at a frequency that's beyond human hearing. In an RCA this indicates more than likely that your horizontal output transistor is shorted and this short was caused by the flyback transformer shorting. This is a common happening with RCA's You'd need to take to a tv shop and have it checked out. Stargazer

Jan 28, 2007 | RCA F27650 27" TV

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