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Mesa 400+ Standby switch

geggy spoiger

geggy spoiger

Supporting Member
Aug 17, 2004
525
690
39
Central Coast, Australia
#1
Hi all,
I've recently noticed that when I switch to or from standby, a little blue spark can be seen thorugh the tiny space between the rocker switch itself and the plastic surround mounted to the face-plate. It can also be heard through the speakers. When coming off standby to play, a small 'fizzle' is heard for a few seconds and fades away. The same sound has been there the entire time I've owned this amp (1 1/2 yrs) so the spark has probably been there the whole time to, but I've only become aware of it as of late. Would there be a problem?? Is the spark normal??

Please any info is greatly appreciated.
 
#4
My power switch broke after 9 years, a sudden flash and it stopped working. I was able to get a switch from the same manufacturer with the same ratings, looks slightly different if you really stare at it but it does the job. Changed it myself, wasn't too hard. PBG is right, of course. If you bought the amp new it's a warranty issue, don't think Mesa warranty is transferrable but maybe (hopefully?) I'm wrong.

Hopefully you can just take it to the store you bought it from, and they're a Mesa dealer/service center and fix it fast and free. I don't have much confidence in your average dealer/service center, learned the hard way, but if I could fix it they should be able to. If it's an older amp and you bought it used, it should still be an easy, cheap fix to replace the switch. You can try to contact Mesa, but unless you live near them and can drive over, or your schedule permits you to call, leave a message, and sit by the phone for days, trying to get a human at Mesa is like playing the lottery.
 

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