Faulty Pyramid PA310

[Nikko 2]

I have this pyramid pa310, very good amp. I had replace the 50k potmeters, becuz they were faulty, after playing for some time, the amp goes into protect mode ( the relay clicks out), I have to wait atleast 10hours then I could play it back, but after 10 minutes of playing it clicks out back


I took it to a technician, when I got it back, and turn it on the relay clicks right away without any delay..... and I think he tuned it becuz I'm getting 83watts per channel which it suppose to be ~~~35watts per channel.....


But there is still a problem with the amp when I connect both channel the right channel starts to play very low and distorted but If I Turn it off and and plug out the left side Input, It start to play normal. Same problem applies to the Left side too


I think the technician had changed two Output transistors from the left


Any idea what may be the problem

And any idea of how I could make It have the delay protection when I turn it on


Thanks....

 

[Mooly]

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