Inter-M R500 Plus possible bias problem

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Hello fellow forum members,

I've purchased this amplifier in used condition for mid-bass duty in a bi-amp setup. The problem is when idling it gets too hot. Can you help me set the correct bias voltage? I see two test points on the main board TP1 and TP2. Below I attach a photo of the amp. You can see the heat damage on the pcbs. Any help greatly appreciated.
 

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So I measured the test points the channel 1 shows arround 20 mV and channel 2 30 mV


Well that's not unreasonable, it ought to be running cool. Can you measure the actual current consumption from the DC supplies?


Or the actual values of the emitter resistors - if they've changed in value that could be a reason. Also oscillation (ultrasonic or RF) might be another possible cause.
 
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