DENON PMA-500V Power Amplifier Restoration Repair

DENON PMA-500V 
Power Amplifier Repair

Block Diagram PMA-500V

Input Stage VAS and Output stage of Voltage Amplifier PMA-500V

                                                                                 

Servo DC Out, Bias adj, Current Buffer Output

Denon PMA-500V Defekt, Broken Repair Restoration:

Trouble:
D529     ISS133     Short Circuit,

D509     HZ7B-3   Short Circuit, 

TR505   2SA1358 Open Circuit 

D507     HZ7B-3   Open Circuit