I have an old PCB with 3 resistors, 2 diodes, 2 transistors, 1 cap and 1CR reed switch. I removed the reed sw and coil to clean up the board and coil. I will re shellac the coil.
1st What I need help with is the part number for Q2 on the PCB. Its the transistor with the heat sink.
2nd The Q1 was a 2n3390 but that may not be original because it doesnt seem to be a Darlington transistor. Can anyone confirm?
The diodes look to be germanium to me (1Amp). Can anyone confirm?
The cap is electrolytic and Ive got that covered.
I could buy a new board for $55 to $100 + but would like to repair this one. The technology is old and simple and should be easy enough
Thanks in advance