For a friend of mine i just repaired his Crown K2 amplifier.
Both output PWA's and the main PWA had several problems.
On the main PWA T1 was defective (short winding), some of the LM361 comparators where faulty and the 4 25v/100uf caps (near T1) where faulty.
The output PWA's had several components defective, like the FET driver and the optocouplers Also at one side the isolator sheet had a small hole and the heatsink was short to chassis.
Resolve all problems and the amp is worked back again! But both channels are run very very hot when channels are been active. Even without load you burn your hand
after one hour. Is this normal? I never had an K serie amplifier on my workbench.
When disconnecting audio signal (or simply turn the gain pots at front back) the channels getting inactive and cool down. So this works like it should be.
Hope anybody with K2 experience can answer my question.
Patlover1983Member Since 28 Jan 2011
Offline Last Active Oct 13 2014 04:02 PM
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