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Just found! SWR SM-400! Questions!

I have a used SM-400S that I bought here in Montreal a few months ago. I have gigged with it and it works well, although one of the previous owners disabled (disconnected) the fan because apparently the fan logic had failed and the fan was always on.

A couple of weeks ago the power switch started failing, so I took it out and now the whole amp is always-on: to turn it off I have to unplug it. Got a gig coming up, guess it would be nice to have a power switch for the amp. Any ideas on where to get one? It's a rocker switch, about 2.5 cm (1") high and 1cm (1/3") wide.
 
I had same thing happen ta my 900 last year. I paid $30 ta have one overnighted from an SWR repair station. The next week, my buddy's Redhead went down wit same issue. He found the switch at Radio Shack. $2. If ya have ta use fore ya can effect a repair, use a power strip with a switch, rackmount or floor model. Turn it on an off with it.