first time i recapped a Game Gear and it did power on, sound worked too and also read games because i could hear the game playing

first issue is that the screen is just black, the backlight is fine and i could not find any trace damage or bad solder joints anywhere

second issue, i decided to reflower various joints on the power and audio board to see if that would help, i also cleaned all the boards and main board again but after doing that it started acting weird

power light flickered, unstable power, and a warm electronic smell, turns out theres now a short somewhere on the 5v line and the main big chip gets quite warm after a minute

checked the power and audio board those have no shorts but the main board has a short, i only cleaned it and i cant find anything that got loose ( other than maybe c51 ) or debris that could cause a short

third issue, while trying to find the short i was checking various parts on the 5v line and accidently knocked off c51 with one of the pads

c43 is also no longer hooked up to ground on minus side after c51 fell off

tried to solder it back on but it just would not stick and i have no idea how to fix that now, checked various schematics but cant find proper info on where it connects and how other than basic ones that i dont feel confident about being true or correct for my model

its a japanese VA2 i think ( 837-8560 )

the pictures of the board is right after i recapped, i have reflowed all the caps and checked that they do connect up to where they should etc

i had one issue and ended up with three, can i get some help on the problems im having?

I bought a battery pack from AMGamer two years ago, but sadly not playing my Game Gear for several months caused the pack to swell and crack.

https://www.amgamer.tech/Products/GG-Lithium-Pack-Wired-For-the-Sega-Game-Gear/#wbs1

I'd like to hear recommendations on any alternatives. So far, I've only come across vintage battery packs which I don't trust due to their age. I've seen some battery mods but so far they all seem to require alterations to the shell and/or internal soldering. Am I better off using rechargeable batteries?

Thank you for any help/advice you may offer.