/diy/ - Do It Yourself

>>2768815
The amp in my car works occasionally. It was completely fine until one day when it was extra humid and rainy it just stopped. My car diagnostics screen shows No Connection for the amp when it does not work. When the amp does work, it will usually be on an extra cold morning, or occasionally if I brake hard or hit a big bump it'll come on. When it's on its great, zero issues. No sound distortion, no weak sound, it works amazing until I turn my car off, then it's hit or miss if it'll work when I turn it back on the next time.

This made me think it might be a power connection issue, maybe an old broken solder connection since the car is a 2004? But I pulled the amp out of my car and as far as I can tell the solder looks fine on the power connections, but I'm not an electrical engineer and have limited experience so I could be way off base. I'm also not noticing any failed capacitors based off of examples I can find online, but again my experience in this realm is limited so I could be missing something.
>pic related, will post the other side in next post
Any ideas, just based off of looking at the board? This is a common enough issue that there are ebay repair services for this specific type of amp, so I was hoping there would be something kind of obvious that I could solder myself to fix.

>just buy a new one
The car has a weird speaker setup, when people replace amps they have to replace the rest of the speakers due to the speaker channels I think. I'm on a budget and bought a solder gun and some solder to try and fix it on my own to save some money and learn some more about electronics. New stock amp is over $1k, a refurb is around $500, and the repair service is around $400. I've searched junkyard cars and they don't have them, and the single one I did find since this started happening was dead as well.