so i installed the mint backlight v3 from nonelectronics into my dmg and when i turn it on it works perfect and i see the nintendo block when there is no game in it, but when i put a game in i just get 3 horizontal lines or sometimes a checkerboard type pattern any help please?
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Matthew Joseph Payne
Sounds like the backlight may be drawing too much power. Make sure you installed the resistor correctly!
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turns out i didnt have the resistor connected at all, but when i reconnected it there was no screen light at all, just the battery led
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San Diego
Hopefully you didn't burn out the LEDs in the backlight. Double check the resistor connections and make sure you have a good solder. Where did you solder the resistor and wires to? If you have a pic to show how your setup looks it might help a bit.
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nah the led works fine, i was thinking maybe theres too much excess solder on the curcuits, could that be an issue?
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matt's mind
VenzaKid wrote:
could that be an issue?
this is a HUGE problem in soldering. very common mistake.
there is such a thing as too much solder, and of course too little. the trick is to get only as much as you need, beyond this is a waste. just enough to work.
you've probably got what are called 'solder bridges,' meaning you joined two solder points together because too much solder. they touch with big globs of solder a lot.
the easiest way to get extra solder off is with stuff called 'desoldering braid', or a solder sucker. i hate the suckers though, personal preference...
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Matthew Joseph Payne
I'm the opposite. Can't stand braids, work great with desoldering pumps. 
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thanks kitsch! i took it out and installed it on my gameboy pocket instead and it works perfectly! now i know for future modding