/diy/ - Do It Yourself

>>2769026
>>2769307
Thank you anon, your help is appreciated.

I just pulled the amp back out of it's case and unscrewed the power connection screws. I don't see any metal traces/pads around the screws on the underside of the board, could that still be the issue though? Screw included in pic for reference, the hole I pulled this one out of had the most white stuff, I'm not sure if it's just plastic from the power connection housing that has become brittle over the last 20 years or if it's something else. Still going to clean with WD-40 and a wire brush. I grabbed some dielectric grease the other day too, should I put some on the screws, and the actual power connection inside the housings as well that the car plugs into?
>pic related