For the Beolab? 😕

I agree, the ones Jacques links to look fine.
If you need 50 transistors you could probably buy 25 pairs, - 
but it's in the UK so customs and import duties/VAT will have you for dinner.

My advice would be to keep an eye on Ebay etc. and grab good lots of original RCA or Motorola.

Martin

I ordered the 2N3055 from CPC in UK and I will open one when they arrive and let you know if they can be trusted as a replacement. Otherwise I will send them back 😁

I bet they won't do in the Beolab 5000. I hope to be wrong.

When I come across a blown 2N3055, I usually replace it with a KD503 (essentially the eastern bloc variant of the 2N3055). Haven't had any issues so far.

You can easily find surplus from the 80s in big quantities, and they aren't expensive. And, the most important thing: nobody has started counterfeiting these yet ;)

So, I got the new 2N3055.. The one to the right.

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The new one is 11gr and the fake 9 gr.

Now an inside picture from the new and from the fake 2N3055 Login to view image

Now an inside picture from the new and from the fake 2N3055 Login to view image

And finally the Beolab 5000 is producing 60V and fully working. So the problem was the fake transistors.