Hi Experts,
I have this Sony Receiver/Amplifier and the Phono circuit appears to be blown because of a short in the (phono) connecting wires.
Anyone know where I might get a wiring diagram?
With that in hand I expect to have a few more questions :-)
TIA
RF
Is there still a short when you plug phono/RCA plugs into those sockets ?
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on
I think you are the same fellow with the Dual turntable, yes?
Shorting the inputs of a phono section would not damage it - this is done all the time to reduce noise on an unused input. Doesn't mean the phono op-amp might not be bad, or getting no power, though...
When you say "short" do you mean channel(s) cutting out? People often use the term that way even though it is technically incorrect.
Mark Z.
Thank you N. C. and Mark for your comments.
I made a hasty response here earlier today and deleted it in favor of something more coherent, which I hope this is.
Yes, I am the DUAL guy, this time looking at the amplifier. While trying to persuade the phono and amplifier to work together last week, I heard a loud pop from somewhere and soon afterwards I could get no buzz from the amplifier in response to a paper clip. I thought I had blown it.
This morning, I switched on the amplifier again and "tested" the phono connections with a paper clip - they are ok, to my huge relief, so the problem I reported here may no longer be a problem. Buzzing doesn't mean that it will function normally, of course, but it seems to be a good indication.
So, I'm happy to say that I can lay this amplifier aside for a while and get back to examining the turntable, hoping that I don't blow something else up ;-)
Have a great weekend. Mine has improved greatly :-)
RF
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