Re: Pioneer HM82 - No power

Yes, B is a small ferrite bead, about the size of a ½watt resistor.

Actuallu, now that I measures again:
53.2 volt dc on +15 volt output. Must have remembered wrong.
+22 output at zero volts.

Hi, I'm having a Pioneer which doesn't turn on any more, and have found the SMPS to be the problem, but with my somewhat limited smps knowledge I can't find the problem.

Purchased the full service manual, and have attached the smps diagram.

230volt mains.
I measure 325vdc on C805.
On IC821 I measure 21.5 volt on VCC so this should mean that its above startup voltage.
3.1volt on feedback. and I get 3.3volt on the 3.3volt output from the transformer (after d223 and d224)

+22 and +15 volt is however dead, so I suspect IC823 is dead,...

Re: New Members - please post your introductions here

Hi there.... greetings from Denmark
In general, just hate to see "mostly working" electronics being thrown away because of simple problems.
For the not so simple problems I hope someone here can help :-)