Yeah the resistor I mentioned before is way out of tolerance, Reading above 130 ohm, the one on the other side is 99 ohm. And about 4 of the smaller caps close to the heat sink are not charging. I won't get chance to do the work, for a couple of weeks due to work commitments, but I'm going to try and get the parts ordered this week.

Thanks for the advice and support...

L7915CV, and the other side L7815CV....

I thought the same, but it is physically twice the size of any other resister I've seen, so wasn't sure if the code was going to be standard or not. The colour has been distorted by the burn, but the one on the other side is definitely brown black brown gold... The burned one was touching the heat sink, and the capacitor right behind it, so I'll test that two to see if it's ok. I should be back in the workshop tomorrow afternoon so I'll test it then.

The other side of the resistor is black, and clearly burned, I was just trying to get the best shot of the Stripes to check the code,...

Good evening, I have had the same problem with mine. I tested the inputs as I suspected a sort at the input stage, but similar to here have arrived at the, power board, on mine one of the large surge resisters seem to be burnt out close to the heat sink, could this be the issue, or is it likely another symptom of the problem?

[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"PXL_20240108_171417589.jpg","data-attachmentid":3174980}[/ATTACH]...

Thanks 👍

Hello, I just found this site looking to resolve an issue with my Presonus Eris sub8, but I see that I may have found a site that suits me well. I am a design and technology teacher in the UK, and teach electronics to 11 to 16 year olds. And I'm also really keen on music/audio and have various old amps, guitars/ pedals ect that often need maintenance....