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Accuphase p-250 HELP!

A

Andrew420

New Member
Does anyone have schematic info on this model? I have dc offset causing the relay not to energize and the amp will not come out of protection. I can’t seem to adjust this. Any help would be appreciated

Thanks
 
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Just check the outputs with a meter. I'll bet one or more is bad. What is your level of expertise?
 
cademan said:
Just check the outputs with a meter. I'll bet one or more is bad. What is your level of expertise?
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Thanks for your prompt response!

I’m not a tech. The guys doing the work have 80 years service between the two of them. I think they’re Mcintosh certified guys but they do everything. Otis told me he had to replace an open 4ohm resistor and a small cap on the driver board, but as far as the relay it has to have 0 dc offset and the adjustment control is not working... or something like that.
 
I'm sure your techs can find a schematic I mean they have 80 years between them right? They should definitely know which semiconductor took out the resistor.
 
cademan said:
I'm sure your techs can find a schematic I mean they have 80 years between them right? They should definitely know which semiconductor took out the resistor.
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I can’t find one anywhere on the Internet. Accuphase says they don’t give them out and there is only one service center in the USA and they won’t give them out. Semiconductor?! I have no idea. They just asked me to help them find the service or schematics. The guys are in their 70s, they’re really top notch, they just have more repairs that will pay out faster (authorized service from hifi shops), it’s a small business, run by two veterans and they have bills to pay too. They have to put my accuphase on the back burner unless I can find them some help or their gonna spend all this time chasing gremlins.
 
Usually a good tech can find most problems with just a scope and meter. It might take a little longer but it can be done without a schematic but I agree it could certainly be easier having voltage test points sitting in front of them.
 
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