UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

teetoon · 17th Aug 2019, 10:27 pm

Hi Norman. Is it the same with the cancel button pressed ? That would rule out the tone circuit, but you say it's only on the phono input I see.
Try the 2 input sensitivities on the phono board by rotating the board to select the other MM input.
I would have thought it would be around that module if it's not affecting the tuner or tape inputs.

Edit: a dirty switch might cause a problem, even the stereo mono buttons can do weird things.

David.

17th Aug 2019, 10:27 pm	#3
teetoon Heptode Join Date: Dec 2010 Location: Barnstaple, N.Devon, UK. Posts: 557	Re: Quad 33 one channel brighter Hi Norman. Is it the same with the cancel button pressed ? That would rule out the tone circuit, but you say it's only on the phono input I see. Try the 2 input sensitivities on the phono board by rotating the board to select the other MM input. I would have thought it would be around that module if it's not affecting the tuner or tape inputs. Edit: a dirty switch might cause a problem, even the stereo mono buttons can do weird things. David. Last edited by teetoon; 17th Aug 2019 at 10:33 pm. Reason: more info.