The connection of the right speaker is quite tight and tricky. In my experience it can sometimes disconnect when reseating the logic board. All in all, the acoustic performance of this speaker system is lacklustre. It's a fact. I use Bongiovi DPS system wide audio post-processing software to slightly enhance that poor performance. It works well. https://bongiovidps.com There are other alternatives in this space, but I found this working best for me. Hope this helps.
"This was a big mistake on apple's part, because G4 processors run very hot!"
How was it a mistake? Mine still runs fine after all these years.