My screen went black and the tv started making a buzzing noise.
The F27669 uses the CTC203 series chassis. The most common cause of that symptom is a shorted horizontal output transistor, caused by a cracked solder joint on a small coil connected to that transistor's base. When this happens, the main B+ supply is shorted to ground so the power supply squeels. Every once in a while I also see the horizontal output transistor shorted due to a shorted flyback (high voltage) transformer. A good tech will replace the horizontal output transistor, resolder the coil and drive transformer, test the flyback (replacing it if necessary) and your set will be back to perfect.
Posted on Aug 10, 2007
If that set came into my shop and it only needed resoldering and a new transistor, I would charge $75, and if it needed a new flyback as well it would be about $100. Shops in your area will vary so be sure to ask around. Buzzing, squeeling, whining... yes, they are all the same.
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OK, How much do you think this would cost? My TV has guideplus so I would love to keep it. But not if it is going to cost as much as buying a new one. Any ideas. You know the noise is really more like whining. Would that be the same as buzzing? Thanks alot Darlene Mitchell.
Thank You Mike, I almost trashed it before you emailed me. Now I have hope. I love my TV. My son told me I was acting like it was my child. I appreciate your help. Thank you very much.
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