Currently Being ModeratedJan 8, 2010 2:55 PM (in response to crockbar)RE: AX2 212 crashing sounds and sounds like a submarine
This could be the behavior of a bad pot, so you will want to have your service center perform the AX2 diagnostics to check all the pots. You can also take a look at the old forums to see if there is anything that sounds familiar. There was an end user who was an amp tech (Lemmie) that used to answer a lot of these unsupported repair questions:
Currently Being ModeratedJan 15, 2010 4:14 AM (in response to crockbar)Re: AX2 212 crashing sounds and sounds like a submarine
Ditto on the pots, but I don't think the diagnostics tests the pots. You can set the amp to have the pots at either "instant" edit or "last setting" edit (the manual explains the difference). When they are set to instant edit and a pot is going bad, you can get the constant edit effect while playing. Try zeroing all the pots, then one by one tweek them to see if or which one is bad, call tech support and they'll send you a replacement (since you changed the battery, you probably have the soddering skill to do the pots). It may also be the electrolytics and changing the main power electrolytics is pretty straight forward - there are 5 of them, see if L6 can send you them or buy them all for about $15 through digikey.
"Lemmie" is Ken Carver who is a guitarist with the Rhythm Dawgs in TX. He's an engineer (either computer or electronics - I don't remember). He left the forum cuz L6 made one too many format changes and it was too tedious for him to stay (or maybe he still watches it under a different name!). He still offers advice to people about the AX amps from time to time, as the techs at Savage Amps talked with him when they were trouble shooting one of my AX2s. But I think he's moved on to the Vettas at this point.
Currently Being ModeratedNov 30, 2011 3:41 PM (in response to crockbar)Re: AX2 212 crashing sounds and sounds like a submarine
I realise your post was a while back, so you may have sorted the problem by now.
Alternatively, you may have come across any number of other problems with your AX2 - believe me, I've seen more than my fair share, having owned two very troublesome AX2s, and an equally problematic Vetta II.
I wish I could tell you something more positive, but this is one of the many problems that AX2s develop over time.
You can check out my blog for my own tale of woe regarding both of my AX2s AND my Vetta II.
All I can suggest to anyone else with these problems is take it to a repair shop ASAP.