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Pioneer SD-532HD5 Power Problem

21 years ago

I have a Pioneer SD-532HD5 manufactured in 2001. The TV powers on and works great for around 20 minutes. It then shuts itself off, clicks several times and won't power back on until I manually reset the power switch. After I reset the switch it works fine. Anybody know what might be wrong?

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pee_wee
21 years ago
Possibly defective solder connections or defective filter capacitors in the switch mode power supply.

I would first suspect defective connections. After the set shuts down, unplug it and check the temp of the horz output transistor. If you can't hold your finger on the output heat sink, then it's running too hot and could be causing the shutdown. Possible reason; defective filter capacitor in the horz driver transistor ckt.

Good luck,

pw
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