Alright for sure thanks for all your help.

Okay I changed the solder points and replaced the batteries the backlight stays on now it just changes contrast is that fixable?

Hello, sorry for the new topic it won't let me bump older ones. Anyway I just finished putting a backlight in my pocket and every time I press start to play a loop in LSDJ the backlight just shuts off. I've read that it could be the cart but I'm not sure, is a 64m smartcard 1212 compatible with the pocket? Any advice would be great. Thank you.