Jukeboxs cartridge pressure adjustment

Jukeboxs add cartridge output select assy

Jukeboxes modify credit switch to refund coincoin button

refund credit switch

Jukeboxes speakers put rubber for reduce vibration

Jukeboxs repair cartridge socket wiring

 take off cartridge

take off L/R channel check wires bias

soldering wire

re-install cartridge and check R/L channel coil bias

 

 

6922 6AQ5 tube amplifier repair

High voltage short path

open resistor check inner trimmer no problem

2023 new toy Rock Ola 1975

 

before record

Woofer equalizer 10~250hz record -4