Phase Linear 4000 repair help

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poynton

Member
2005-03-10 11:57 pm
UK
Hi

I have the circuit for the 3300.

It has a muting circuit on the output which effectively shorts the outputs.

Possibly the same circuit is used in the 4000 in which case trace back from the RH output and remove the muting transistor(s). in the 3300, they are MPSA16, Q103/203.

They mute the output at switch-on to prevent thumps.

Andy
 
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