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