Excursion HXA5k, soundmagus X3500 output driver board capacitor value

[Maxikill97]

Hi guys,

2 questions:
- Does anybody know the capacitor value from the photo?

- Both output driver boards work on one side of the amplifier (creates a PWM), but when plugging them into the other side of the amplifier they does not create an output PWM.

6n137 optocoupler replaced, driver transistors replaced. All resistors read the correct value.
INPUT pins of the driver boards has the correct GND, VCC, PS PWM and output PWM.

 

[Perry Babin]

The information for a similar circuit has it at 100pF@50v.

 

[Maxikill97]

Thanks Perry 🙂
I will replace it

 

[Perry Babin]

A combination of these two diagrams may help.

http://www.bcae1.com/temp/SLA1500.pdf