Hi All,
My ST35 has been working well for months but now has developed a "sound" issue.
During bass passages-it can make a real "fizzy" sound and sometimes it gets a 'static pop sound" it can make my speakers really move the cone out.
Seems the amp is ok about the first minute and then gets worse as it gets hotter.
I have already tried different pre-amp/phase inverter tubes. Bias seems good. I haven't open the chassis up yet-looking for some pointers. Sounds kinda like a capacitor going bad and I was going to look at the electrolytic ones first to see if I could see in issues but I don't know were to go from there.
Looking for advice.
Thanks,
Mark