Yamaha m4


I have a yamaha m4 I took the cover off to clean it and when it is on I moved the      2 big  caps when i moved  them        back and four they made poping sound . If dont move them its  fine..is that ok?  thank you.

rocky1313

Showing 1 response by dekay

I would assume that "flexing" a sizable circuit board on a powered up 40+ year old amp would create such noises.

Hopefully no serious damage was done, but doing so was certainly not an upgrade.

 

DeKay