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Which of the LDRs is LDR3 ? one of the stacked ? By the way, many thanks for helping to all !!!

Hi, can you tell me, what's this ? It doesn't looks like a work from mesa. Is this another mod ? i haven't seen this on any picture in the forum. The opto coupler is wired to the master and lead-master pot. can this eventually be the reason for my R2 problem ??? Bernhard

yes, i have measured the pot, it works in a range between 0 and 250 kiloohm. cold solder joint ? maybe, but i don't understand, why the R2 in this case actually works ?

Hi Boogiebabies, i soldered the green wire to the other lug of the pod, no change, then i grounded the free lug to the back of the pod, respectively to the chassis, no change as well. yet another idea ? greetings Bernhard

ok, here are two pics: the blue wire is soldered to R131 and the green to R130 my mark III has no voltage switch, so i attached the pot at this place. greetings Bernhard

hi, i have a problem with my mark III. It's a bluestripe combo non-simulclass (60 Watt) with reverb and eq. Because the volume of R2 is much louder as R1, i had installed the R2 volume mod like the instructions and pictures on this board (R130 snippep out and 250k taper pod between R131 and...