notdoctors Posted April 29, 2018 Share Posted April 29, 2018 Hey guys! Not sure if anyone's even using these forums anymore!? But I have to try. I have a pair of 1x12 Spider Valves mkii. One of them (my main gigging amp) has started doing a really odd thing. It'll sit there ready to go after soundcheck but when flick standby off and start using it - I mean using it to play through rather than just the tuner prior to going on stage, it does this really weird thing where the effects start switching themselves on and off...usually culminating in it settling down with the worst univibe / rotary or completely unusable heavy flanger effect until I dab on the channel selector again to bring it back to my preset. It then does the whole routine again a number of times until finally, about the third song into the set, it settles down and behaves itself. Any ideas? I'd be hugely grateful. Cheers Paul Quote Link to comment Share on other sites More sharing options...
psarkissian Posted April 30, 2018 Share Posted April 30, 2018 There's about four reasons that can happen, loose connection, intermittent solder point that sort of thing. And if it's been 20 to 24 months, then it's probably time for tube replacement. The solution is that it's time to go in for a service check and/or any repairs,... from an authorized service center that knows the insides of these. Quote Link to comment Share on other sites More sharing options...
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