Or...if the original ones aren't broke, don't replace them. Like Jacques, I don't usually replace the original active components like transistors and diodes if they aren't failing.
There is actually a reason to replace at least small signal transistors.
This is noise performance of the product. Transistors more than 50years old are perhaps not the most noiseless parts you can get even with a noise specification.
The new produced parts will give a a higher performance of your product. I have messured the specifications of a Beolab 5000 with original small signal transistors (not broken) and with new B type small signal replacements...................
Since then I replace the small signal parts.👍
/Frede
That settles it for me then. B type it is. 🙂
-sonavor
