Replacement transistors for Yamaha PM1000 master module

[Ike Zimbel]

I don't really think there's anything to be gained by wholesale replacement of the transistors. If they've lasted 40 years already, I'd leave them alone.
best,
Ike

[KillerV]

Originally Posted by Ike Zimbel

I don't really think there's anything to be gained by wholesale replacement of the transistors. If they've lasted 40 years already, I'd leave them alone.
best,
Ike

Fair enough. I still may have to replace the one(s) I damaged.

[lds]

Fairly common devices. An ECG or NTE 159 will work in it's (2SA841) place, but it's best to use the original.

[Jim Williams]

Best to replace them with something modern and quiet. 2SC3329BL for NPN and 2SA1084 for PNP.