My ADCOM GFA 5400 needs new power switch

My ADCOM GFA 5400 was made in 1995 and I was using it until about five years ago. Yesterday I hooked it up to a preamp, CD player and speakers. When I pushed the power button nothing happened, no clicking, no LED lighting up and no sound. Today I opened it up and the fuse is good, and power is going to the power switch. So I think I need a new power switch. I went on the ADCOM parts site and the switch is not available. Does anyone know where I could get one? And if has been discontinued is there an alternate switch that would work?

Check if the switch dimensions matching Carling Technologies PA955?
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