David repair shop

Dead transistors on left channel power supply zener diodes blown  fix replace 2SD587A and 2SB617A obsolete hard to fin…

hum when using jack out problem Solution : build in neve 1166 balanced transformator to ged rid  of it .  signal connec…

Diagnose not compressing  selected a new pair from 50 pc quantity Unit is responding normal again !

Diagnose : No audio only midi working and broken feet Fix : Replace DA convertor ,recap cap, repair traces from damag…