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tv wont turn on, and makes chirping sound

 
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doorhand
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PostPosted: Mon Jul 03, 2006 8:37 pm    Post subject: tv wont turn on, and makes chirping sound Reply with quote

Hi, i have a deccacolour (d28wt92s) tv, that wont turn on or goto stand-by, it makes a continueous chirping / tweeting noise, that when unplugged still chirps and fades away. can anyone advise me what the fault is, is it the LOPT?

many thanks,

chris
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gary



Joined: 05 Apr 2005
Posts: 584
Location: MANCHESTER, uk

PostPosted: Mon Jul 03, 2006 9:26 pm    Post subject: Reply with quote

COULD BE THE LINE OUTPUT TRANSFORMER BUT I HAVE ALSO HAD THAT FAULT CAUSED BY THE FRAME OUTPUT IC AND S/C RECTIFIER DIODES ON THE SECONDARY OF THE PSU, S/C LINE OUTPUT TRANSISTOR, IF THE FRAME IC HAS GONE IT MAY ALSO HAVE DAMAGED THE MICRO PROCESSOR, BASICALLY THEY ARE A HORRIBLE TV TO WORK ON AND WE REFUSE FLAT TO REPAIR THEM ANYMORE AS THEY ALWAYS SEEM TO TURN INTO A NIGHTMARE.
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