Hi all,

I have a TR707 that's functional other than the display is very dim. I have a 12V 1800mA adaptor (albeit not Roland), and two fresh batteries in the unit. Dismantling it, I measure +5.1V and -10.6V (the latter of which seems a bit high) on the main board, and the same +5.1V on the display board. The two resistors which (I think) control the contrast are both in spec at 330k, and I've also cleaned the contacts to the LCD with contact cleaner.

Any ideas here

Thanks,

Neil