I have a Spider IV 75, circa 2012. It was unused for some time, then in trying it out, no response at all other than power on, display working correctly, white noise and crackle, and very very loud bang/cracks when I try to connect a jack. I removed the top amp section, cleaned all the moving parts I could find, put jacks with contact cleaner in and out of any sockets. The white noise and crackle has reduced a lot, but the 'big bangs' are still there, with no sound going through. Connecting a device through the rear mini-jack is no problem, with no background noise, and output level controlled happily by volume. So speaker and basic amplification is fine. 4 questions:-
1) Anybody recognise the issue and can point me to the likely culprit?
2) Any recommendations to sites online to buy spares of boards etc? I'm based in SE Spain.
3) What's the likelihood of an experienced amp fixer (I am not one) being able to fault find and get parts?
4) Failing all else, any recommendations for price for a spares/repairs posting on eBay Spain? As I said, line in, headphone, speaker and amp and display all seems to be working happily.
Thanks for any help.
(PS I also have a Amplifi 150 that only lights up the ABCD voices dimly, but other than that totally unresponsive. Power supply or System board? Also cleaned it down, no luck)