There's a hard tar-like substance under the power transformer of my Chevy model 986443 radio. I'd like to replace the transformer but can't find a suitable replacement (part number 7255881; 6.3V@6A, Sec. 650VCT .090 ADC).
Also need to replace switch on volume/tone control or the entire potentiometer with switch. Anyone know of a source for these? Thanks.