John Greenland
CVRS Member


from your comments , I would suggest that you first deal with the 2 units with noise.

It would seem that it is very likely a volume control problem which might be alleviated with a proper electronic cleaner spayed into the actual control or worse case a replacement control.

If you can get these 2 units working then you can consider if you wish to repair the other units .


John G. VO1 CAT