MRC01
Major Contributor
I bought this amp new in 1992 and it's been running like new ever since. I've used nearly every day for over 25 yeras. But every 10 years or so, it fries the power switch and get stuck in the "ON" position. Just happened again tonight. So I'll be getting the 3rd replacement. The part costs about $25 - $30 (for single unit) and is easy to replace. Carling PA955.
Specs rate it at 100k cycles mechanical / 50k cycles electrical but IME this is WAY optimistic. At 10 years with daily use it's more like 355 * 10 = 3.5k cycles. When you turn on the amp, the initial surge briefly dims the lights in the room and occasionally blows a 20 amp breaker. I suppose that takes its toll on the power switch.
Specs rate it at 100k cycles mechanical / 50k cycles electrical but IME this is WAY optimistic. At 10 years with daily use it's more like 355 * 10 = 3.5k cycles. When you turn on the amp, the initial surge briefly dims the lights in the room and occasionally blows a 20 amp breaker. I suppose that takes its toll on the power switch.