I've got a Valvestate S80 8240 which has developed a loud hum whether instrument plugged or not.
The hum disappears when it is tilted forward. Can anyone suggest a home fix?
I put up this question before but for some reason it seems to have been deleted!
Hello James,
Regarding your 8240, the way you have described the fault would suggest there is a fault in the smoothing capacitors in the power supply, we would recommend that you have it looked at by a qualified engineer.