Electronics > Repair
Identification of Transistor D471C on a PHIHONG PSA-2B PSU
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john2021:
Hello everyone,
I am trying to repair an Apple II clone PSU from the 1980s.
I have a shortened transistor, which reads "D471C Y-3C5".
Attached are photos of its location on the PSU board.
I was unable to identify it online.
I want to find an equivalent part.
I would appreciate your help in identifying and finding an equivalent.
Thank you very much in advance,
Joe
PA0PBZ:
Normally with a marking like that you put '2S' in front, so that would be 2SD471C.
john2021:
Thank you very much for your help.
I replaced it with a BC639 and now it is working.
Now the issue is with the motherboard, but I guess it's a question better suited for an Apple clone forum :)
Thanks again, much appreciated
Joe
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