DC wrote:

"Tiger Luck" wrote

Well, this may not be your problem, but things have deteriorated in the
electronic component area over the last few years. Many manufacturers have
out sourced production to China. Most if not all capacitor failures I have
seen in recent years have made in China - or no brand. Try to find something
that says made in Japan!!

Panasonic are reliable. But the op says C311 and C313 have their negatives
connected together AIUI. That's plain WRONG.

Graham