peavey cs800s repair...

Thread Starter

kam-22

Joined Nov 21, 2011
19
This old amp came in last week and it's main fault was powering up followed by fast turning fans and one channel led on:confused:..

The thing about these amps is, it's a smp amp and uses a very complex power supply circuit lay out.. many years ago I serviced these amps and after checking my notes found the remedy...

So after a strip down and check the o/p's all was well there next straight to the low voltage rail's again all good. time to rethink here as it still was doing the same thing..then on rechecking around the o/p stage it turned out to be the thermal resistors connected within it's main heatsinks these are 1k thermals that aid tracking. these can be brought from peavey spares and after a solder in it was back in working order..:D
 

Thread Starter

kam-22

Joined Nov 21, 2011
19
These amps can do 1200w in bridge mode at 4 ohms use... there 600w per can at 2 ohms and 420w ish at 8 ohms use...
 
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