Question about RCA F36665 36" TV

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My tv has no picture. I came home turned on my tv, there was no picture, just a high pitched noise and a burning smell. What can I do to fix it?

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Very common problem with these sets. The High Voltage transformer and the horizontal output transistor is most likly the problem.. If you know the saftey issues involved and know how to solder and unsolder, you can repair this set but theres a possibility you could also have a fault in the horizontal driver circuit, such as l401. if your not a tech its best to have this set fixed by a trained tech, if you wnt to spend between 175 to 225.00 Good Luck

Posted on Aug 13, 2006

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Hi I have a very annoying, ear piercing high frequency pitch coming from what seems to be the television. However, I was trouble shooting and based on the cable technicians thought; said to be the...

The LOT [Line Output Transformer] of your TV has damaged. It is the one, that supply all the voltaged needed to CRT. Its internal windings will get shorted in between, and is irreparable. Replacement is the only remedy to this proble. Replace the horizontal output transistor also with this. you haven't specified whether there is picture with your tV or not. If this high frequency sound is along with picture, there is some loose in the cores of the SMPS transformer, or LOT itsef. If there is no picture at all, and this high frequency sound is there, no doubt; LOT is damaged. OK.

May 22, 2011 | JVC TM-2703SU 27" TV

1 Answer

10-year-old 32" RCA PIP TV just blinked off one morning after about 30 minutes. It makes a continuous high pitch sound, and the on/off switch is completely unresponsive. I assume this is a picture tube and...

It's not the picture tube(especially if image was good b4 it went dead). The high pitch noise is the power supply whinning because it's shorted or overloaded. I just fixed one of these sets - replaced the horiz. o/p transistor and flyback estimate around $120.00-$160.00

Oct 24, 2009 | RCA F32650 32" TV

1 Answer

TV picture compressed top and bottom, then turned itself off

hi i think you have trouble on the power supply section.

Aug 24, 2009 | Standard (CRT) Televisions

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RCA F32650 production May 2003. Was working fine. Turned it on the next day, got no picture and a high pitched whining noise.  Please let me know what I should do to fix it.

If it weren't for the high pitch whining noise. I would say it probably is an internal fuse inside the chasis. It is rated at 1.5 to 2.0 amps. With the whining noise it sounds like a trouble shooting bench
job. Problems occur when a electrical/electronics device is turned on and turned off. Inrush voltage,
when it is turned on, can go up to three times more than normal. This also happens at turn off. Solid state components usually fail at this time. I don't feel that this is a problem that can be fixed in the home.---BBB

Jan 25, 2009 | RCA F32650 32" TV

1 Answer

RCA 36" TV - High Pitch Sound - No Picture or Sound

check for high voltage s3ection of your TV. A Flyback transformer is defective especially in the high voltage cale of your flyback....

Oct 19, 2007 | RCA 35V432T 35" TV

1 Answer

High pitch squeeling noise/no picture.

your problem is due short circuit in horizontal section of  tv

your problem & smell is due to horizontal section failure.

in that section

1 flyback transformer & horizontal output transistor might be faulty.

but remember to check power supply is normal other wise it may fail again.

for skilled technician it is not a major problem &easy to fix at fair cost.

good luck.

Oct 16, 2007 | Zenith A36B41W 36" TV

1 Answer

No Picture

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.

Aug 23, 2007 | Zenith A32B86R 32" TV

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High pitch sound and fuzzy

The high pitched sound, probably not, unless you open this TV set and find out what is making the noise and replace the part. Most likely a coil or transformer is vibrating so fast that the frequency is very high. On the focus, possibly can be adjusted. Now when you take off the back of this TV set, i must warn you, follow my instructions to the letter as there is enough High Voltage in this set to make a grown man cry! After you take out all of the screws off the rear cover,carefully lift up the cover straight up. Oh by the way the TV should be face down. Opps! Not stand back up the TV set and there will be a Grey or black block like looking thing with a large red wire going to the top of the picture tube. on this block you will find two controls, one will say screen, and the other will say focus. DO NOT ADJUST ANYTHING ELSE WHEN YOU ARE IN THIS TV SET!!! No slowly rock the focus control back and forth till you get the sharpest picture. Put back on the back cover and enjoy!!! Good Luck

Jun 13, 2007 | Samsung TXJ2879 28" TV

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No picture, just a high pitch sound

Sounds like the flyback and horz output is shorted.

Nov 30, 2006 | RCA F32672SB 32" TV

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