Ok, I am having trouble with the power button. Takes some finesse to get it just right so it will power up. Then if the volume gets a bit to loud it will shut off. I am not the best when it comes to fixing things like this. I am more of a person that can take things apart and clean em' up. Is this an easy fix for someone??? Will it need a replacement switch... and how hard would it be to get one of those??? Will any do??? Thanks for any input, John

Cleaning it with contact cleaner (try Deoxit D5) will often do the trick but it will likely take several cleaning applications to get it working right.

Cutting out when cranked up definitely means that there is a bad connection inside the switch. Poor connection between the contacts results in excessive electrical resistance. Unfortunately, resistance dissapates in the form of heat, which further increases resistance and eventually the connection is broken either through the resistance from the heated contacts or warpage of the parts. This is observed in cutting out.

I have actually heard arcing from within the power switch of an S90 and if allowed to continue for too long, could damage the contacts (pitting) to the extent that simple chemical cleaning would be insufficient to restore function. In those cases, the switch may require disassembly and mechanically cleaning the contacts and restoring the surfaces. Metal bodied switches can often be disassembled if done carefully by prying the tabs. Plastic ones on the other hand....

but..... you wont be able to spray it from the outside becuz of how the chrome tip is. your going to have to open it up to spray

It's actually the bass that makes it cut off. Not any sort of arcing. I noticed a spring when i take the chrome button off. Could this spring be decompressed????

I am selling an entire lot of trc parts and this spring just happens to be in there and the price is .99 cents. the spring is new and pops in and out with no problems Ready to play!

http://cgi.ebay.com/old-new-La...7C293%3A1%7C294%3A50

JD3, if you are cranking it, there is NO WAY that you would be able to hear the arcing. In your case, I don't think the issue is arcing. I think that the contacts are oxidized making a poor connection. Although I suppose it's possible that bass (shaking) is physically causing the loss of connectivity, my money is on the loss of contact (cutting out) being caused by high current demands from the bass, just like in my previous post.

Of course, it's also possible that you have multiple unrelated issues: an intermittent power switch due to poor connectivity coupled with an amplifier issue of output devices (amp) cutting out from being overdriven.

I'm still betting the former and any repair should begin with a good cleaning. Like sin said, the proper way to do it is to open 'er up.