To start off the TV would only sometimes make a high pitch sound once in a while, like when someone would walk by it. As time went by the high pitch became more frequent and it would change frequency. The power light flashes three times before it would stay on.
Is it fixable? About how much could it cost it get fixed? How hard would it be to fix? What would need to be replaced? Where could I get the parts to fix it?
Model # - F36650 Serial # - C304C21D3 Chassis # - ATC113CA1
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Re: High pitch noise and the power light flashes.
Most likely it is the flyback transformer. I have had meny RCA tv's with a bad Flyback and H.O.T transistor bad. Cost depends on the service center. Parts average around $60.00 dealer, so depending on mark up and shop labor it could vary greatly. If you have never changed these parts it is best to have a service man do it ... Take it to the shop and save the trip call charge $49.00 and up to $125.00..
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First, you will want to isolate the problem. Is it feedback from an AC outlet you have it plugged into? Is it a recent noise that just started with no changes to Tv or its environment, then you may want to consider that a circuit is going and decide if it is worth repairing, You should find that type of fix at a shop for under $100
it's probably not the tube. Sounds like something is shorting the B+ from the power supply. Could be the Horizontal Output transistor or the Flyback transformer. Do you know how to find these components? I could be a rectifier diode on the secondary of the power supply as well. If you know what you're doing check those with a meter. If you don't know what you're doing, ask someone who does.
You can tell to some extent what it may be by listening carefully and trying to identify the location. If you, remove the back cover of the set; stay away from danger, just listen to where it seems like the sound is coming from. If it is coming from inside the high voltage cage it is the flyback. If coming from around the main power transformer it is one of the power supply parts.
According to the Samsung website: "The high pitched sound you hear is probably coming from the flyback transformer. The flyback transformer converts the relatively low voltage electricity that comes from the outlet in your home to the high voltage electricity needed to drive the cathode ray tube in your TV. It is not unusual for a flyback transformer to buzz softly when it operates. However, if the sound is loud and high pitched, it probably means the transformer is failing. To eliminate the sound, you will have to get your TV serviced."
You have a problem is in your horizontal section which also is part of your power supply. The high pitched whine is from the Intergrated High voltage transformer (also called the flyback transformer). This sound occurs when the freuency of the transformer changes and or the voltage gets too high. The click occurs as a result of the drawing of excessive current by the HOT Horizontal output transistor. This is repairable, but requires the correct equipment and a schematic.
Rarely picture tube also shows the same symptom. High pitch sound is due to through deflection area LOT power supply is loaded. Compulsary horizontal output transister short. From your statement i think Lot puncture takes place. Change LOT and horizontal output transister and check tv is now working.
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.