2016-02-17T11:27:04Z PunBB https://chipmusic.org/forums/topic/17723/dmg-strange-contrast-issue/ I have 2 DMG (non modded), and I have issues with the contrast as well, for example I set a contrast and it's rather correct, but when the song plays in lsdj or when I'm moving in the song it's becoming dimmer (with fresh new batteries).

]]> https://chipmusic.org/garvalf 2016-02-17T11:27:04Z https://chipmusic.org/forums/post/239935/#p239935 Hi all!
I'm modding my first DMG and I've encountered a strange problem and I couldn't find anything similar in other posts.
I've installed a backlight (from backlight4you.com), with a 100 ohm resistor, and an inverter chip.
The light works fine, but randomly, the contrast will change, giving me a darker screen.
I checked the 30k potentiometer with a tester and it seems to work fine.
I've also cleaned the joints of the bottom ribbon cable, but the problem is still there.
I've noticed, when the contrast changes, also the potential of the capacitor above the contrast dial changes. Could it be a bad capacitor issue?
Thank you in advance for the help, this issue is driving me crazy!

]]> https://chipmusic.org/kdenk 2016-02-16T15:38:52Z https://chipmusic.org/forums/post/239905/#p239905