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Re: RCA F32649 sound but no picture
Ok you must go to the Horzontal drive curcuit and remove a small coil called L401.. Scrap off the leads, reinstall and resolder. all your troubles will be gone. also for giggles resolder the horz drive transformer as well. also you may need to dom a tuner mod as toi resolder the sheilds around the tuner as well as the grounds inside under the bottom tuner cover. Good Luck
This usually a problem on/near the horizontal section of the TV board caused by solder that losses its contact thats why you need to bump it sometimes for the picture to come out. To remedy this just try to resolder any parts that you suspect seems to loose especially in the part where the components tends to get hot when operating, this usually are the horizontal section or the power supply section which is very common.
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two common problems with RCA TV's. It sounds like your flyback is going on you. There is probably a hole and it is arcing off a cap/ or something.
You can order a new one or you can try and find where it is arcing by taking the back and looking at it in the dark to see where the arc is coming from. If you can find it try using a plastic epoxy to fill the hole
Sounds like you have a shorted horizontal out put transistor and bad flyback transformer.
This is a common problem in the newer RCA's.
I've had serveral of them do this.
The noise that you hear is the power supply
telling you that it's overloaded.