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when i turn my teac tv on it has bright raster and loud sound which cannot be controlled by the volume controlls,it takes a while (2 to 3 mins ) till the tv tunes up and then shows the channels and the sound stops .the tv then returns to function normally.when i turn my teac tv on it has bright raster and loud sound which cannot be controlled by the volume controlls,it takes a while (2 to 3 mins ) till the tv tunes up and then shows the channels and the sound stops .the tv then returns to function normally.
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Ahhh the noise maker comes to life again .. Ok my friend this is a common problem with this set If your lucky?? If you know anything about trouble shooting tvs then this is what ya got.. Try first to measure the Horizontal output transistor. It will meaqsure a few ohms between the base and emmitter. But the base and collector should measure about 450 to 550 olms on the diode settings onm the metter.if it measures shorted you need to replace the flyback tranformer along with the Horz output transistor. Now if the HOT( thats horiz output transistor)is not shorted then theres a little coil in the horizontal drive thats causing problems as you need to take out the coil from the PCB and scrape off the ends and reinstalkl it. also the horizontal driver tranformer as well as the resistor that feeds the transformer could be bad and thast is a 3200 ohm at three watts. if ya dont have a clue what I just said the sets gonna cost ya ariynd 200 to 300 to fix .. Is it worth it to ya>?????lol Good luck
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Sounds like main board fault. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
I did some research for you. This is a known problem with this TV. Remove the back cover, blow out all dust, then disconnect and reconnect all cables leading to and from the power supply. (Do one cable at a time). One of them is not making proper contact. // Your son playing a game is an interesting coincidence. The guy who figured out this ''fix'' had the same exact thing happen. Only in his case it was his niece who played the video game. // Best of luck to you...
In about 90% the power supply failed if the TV is not turning ON, needs to be unplug to make it work or it produces a buzzing noise through the speakers.
I repair these power supplies, if you need further assistance write to [email protected]
when i turn my teac tv on it has bright raster and loud sound which cannot be controlled by the volume controlls,it takes a while (2 to 3 mins ) till the tv tunes up and then shows the channels and the sound stops .the tv then returns to function normally.
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