Gaming GBA turns on briefly then gets stuck in boot-loop

[Zomniferum]

So I've recently tried to revive my old AGB-001, 40 pin.
I've installed the IPS v2 screen but the problem occurs with the old and new screen so I don't feel like this is the cause. The wires I've soldered aren't touching other contacts.

The power button had to be cleaned to get it to turn on properly.

Whether there is a game in or not it will boot for a few seconds, then restart and get stuck in a boot loop only showing half the gameboy logo before restarting.

I cannot find anything online related to this so I'm hoping there is someone out there with some fresh ideas for me.

I'm a new member so I cant attach links to photos of my PCB but it all looks pretty damn clean.

Any help is appreciated, thanks.

 

[MrCokeacola]

Something has to be shorting. Try booting a game with the console taken apart and see if it still does it.

 

[Zomniferum]

Something has to be shorting. Try booting a game with the console taken apart and see if it still does it.

I have booted it with board separated from the screen ( still connected ) and it does the same, game or no

 

[MrCokeacola]

I have booted it with board separated from the screen ( still connected ) and it does the same, game or no

Board is hooped then.

 

[jacobc436]

If this started happening after soldering you could look around on the board for any large solder balls or debris.
What you could try is taking out all the components and laying the GBA board bare on your table, powering it on while holding the battery to your terminals. If it works there, you know there's something happening when you put it in your case.
You could also try undoing any mods you made. Boot-looping means there's hope No signs of life at all, well, you'll cross that bridge when you get there

Best of luck.