System 11a background buzz noise

[highjon]

Which capacitor is the main culprit for the cause of background noise, C26?

I remember doing one of these before but it was a while ago..

I met a guy with a Fire machine recently, which had really bad backgound noise which I told him could be fixed.

It buzzes/ hums in time with the GI lights

Think it is C26 / C30 but just checking...

thanks

 

[Rav]

Keep us updated as my Swords of Fury does the humm in time with the GI kits too....

 

[Guddler]

As does my BK2K. Not 11a, but probably close enough to benefit from the same fix...

 

[highjon]

I'm pretty sure it was those capacitors that fix it, will get my hands on the board and let you know

AC filter capacitors