I have 2 mylar caps Ce or C 25 and 26 in schem., that are crumbling. I have seen this before, would like to replace, but no info on the voltage rating. They read 104M and 1 HS. That's it. The service manual just says 20%. Any ideas?
Have a look at the voltages around them. Probably 100Volts will be adequate as there is a maximum available rail voltage of 80Volts. It is part of the Zobel network.