Aloha,
I've just installed a Frontlight in my CGB to take around writing. The unit has new Alkaline batteries. When I power it up with no cartridge, Frontlight functions normally. When I power it up with a Cartridge in it (Tetris) it is on but it's a little dim and it flickers on and off. When I power it up with the GB USB 64M Smart Card with LSDJ on it, the light is very, very dim.
Sometimes when it's intermittent I can whack the console and it kinda gets brighter with Tetris in, no effect with LSDJ. I double-checked all my terminations and they're solid solder joints. What else can I do to shoot the trouble?
Much love.
Dave