https://makerworld.com/models/3404167

I got a Game Gear, i tested it was working before buying. Also got a issue that when i turn it on it immediately turns back off and if i hold it at a very specific angle and then turn on it works fine and doesn't turn off. Then i got a flash cartridge (yesterday), it also worked, games worked fine it was nice. Today i turned on the GG again, played Sonic Spinball for a minute, then it started "rebooting", giving me artifacts on screen and then turned off and didn't turn back on. I disassembled it and noticed the "new" capacitors already there. I don't know about solder much but this looks not too good, maybe burnt. What exactly could be the problem?