Philicorda GM751


An interesting piece of musical instrument.
It uses a mixture of tubes and transistors.
Tubes: 8 x ECC83, 1 x ECL82, 5 x Z70U, 68 x ZA1001, 1 x ZZ1000
Transistors: 3 x AC125, 2 x AC128, 4 x AD149
Diodes:



View with cover removed.


Oscillators and frequency dividers


Closeup of the frequency dividers using ZA1001


Rear side of above board

ECL82 stabilizer
Power supply board


Output amplifier

Service manual as PDF here