silicon

I have an 68 astrosnic console chassis number: R220-02-BA My amplifier has a unique silicon npn/germanium pnp output stage pictured below. Unfortunately, my germanium is leaking on my left channel and subsequently, the output power is very low. The old transistors are bandix 111p1 and the...

I have a pioneer sx-3900 and it seems to be working great - i opened it up to give it a look through and found on the bottom side connected to the heat sink most, if not all, of the white silicon output transistor heads were cracking. Is there a way to fix this??? The rest of the unit is in...