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I have this pioneer projection for customer i turn on the red light blinks the cover in the back open i can here when you plug in when you hear it carfully there is some wisseling sound for couple of seconds my question is the convergence ics do make this problem stk i mean

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Hi,
Whistling sound could be from power supply section that goes to protection mode when horizontal deflection section (H-out transistor, flyback etc) got shorted out.
Defective Convergence IC will blow the pico fuses of +/- supplies
Let me know model number of tv, I will check if I have its schematics to provide you more help.
Thanks.

Posted on Aug 24, 2010

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