You still get sound if the 130 V dies.
So check the 24V at the regulator transistor. Should be apx 24 V on all 3 pins.
The 2.2 ohm & Zener ( 103-105 iirc ) were also known to go.
Also 8the 9-86 color module can go in upside down & blow the
regulator. OOPS
73 Zeno
LFOD !