Hi all,

I'm struggling with a Beomaster 5500 which has a power supply problem. The 8 volt power is not present, and I noticed a crack in a connection to the emitter of transistor 2TR12. I did repair this connection but unfortunately it doesn't work. 

So now my next plan is to replace 2TR12, but I think this transistor was already replaced by the previous owner (that's why the print has damaged)

According to the schema it should be a BC534, but I doubt if this is correct, because this is a tiny TO92 transistor. It should be a PNP transistor in a TO220 housing. In the unit was a BD242C, but this doesn't work.

I have another Beomaster 5500 , so I opened this unit and I noticed a BD536. This unit works. 

So the big question, which transistor to use for 2TR12

- BC534 according to schema (unlikely)

- BD242C which was in this unit (faulty?)

- BD536 which is in the working unit