r/hifiadvice

Hey y'all I have a sony STR-DE197 stereo receiver and I have been dealing with the left speaker on Speakers A going dead, both speakers on speakers B appear to work fine, when I turn up the volume, the dead speaker appears to come alive, and sometimes that speaker will cut in and out at low volume but performs well at a higher volume, what could be going on inside my receiver? speaker distance ranges from 4 feet to 14 feet from receiver.

A couple of years ago I inherited from my late Grandad his Sony TA 700ES and kef reference 104/2 speakers.

The audio will cut out from any source when I increase the attenuator much further than a quarter of the way round.

To try and solve this I first had the amp serviced at a local hifi shop and they stated 'lots of fractures joints seen under transistors etc. Thorough resolder across the various circuit boards'.

This has not fixed the problem.

I then discovered that my speakers have foam donuts which perish over time. I've removed the old degraded foam and glued in new ones.

This has not fixed the problem.

Can anyone offer any advice, or next steps I should try. I am keen to keep these speakers and amp working well as my Grandad was fond of his tech and I know they cost him a fair bit back in the day. Thanks