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Samsung PS42Q97HD power problem

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Turnip:
Hi folks, and thanks again Bruce.

Checked around ICS801(MC33067) and voltages seemed reasonable but there was no drive to the lower output  (QS802) FET gate, so thought it might be a duff ICS801 - and it was, surprisingly.

Still hate plasma but two Sammies done in a week gives a bit of a lift - Chris.

PS - Think a piccy of the area from service data supplied.

downunder:

 Nice piccy as ever, Chris, and impressed by your fault-finding techniques. The MC33067 eh! I've never changed one of those, but you know what they say........

We'll have you sorting these plasmas out in no time.                Bruce

Turnip:
Hi Bruce,

Experience has always told me that the chip is never the problem, so I circled around a bit checking those Opto-Isolators, using suitable earths for each, either side of the Hot/Cold biz - got a minor belt just once where I forgot whether I was hot or cold.

Concluded that it must be the chip, but still didn't believe it. But having an old Sammy panel with a couple of such chips on sub-panels thought to have a go.

Still hate plasma, although admit pictures can be good - Chris.

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