Hi caballero, and welcome to the forum!
caballero_3310 wrote: ↑
Mon Jul 01, 2019 9:36 am
I have gem ws1 oriental, my keyboard turns on only the screen light, but it does not show the screen, it does not sound or the panel looks, it can be the 3.6v nimh bios battery, which is 0.888 v?
I'm not familiar with GEM keyboards but it's most likely that the empty NiMH (which is an accumulator) causes one or more issues
I recommend to open the keyboard and check that accu and see if it eventually has already leaked! If so the acid may have reached the pcb and may already have damaged one or more traces on the pcb!
The dead cell should be replaced as soon as possible, and, if some acid had leaked, the pcb should be given a good clean, followed by an 'optical' inspection of the copper traces - if in doubt they should be checked for continuity using an appropriate meter... hope this helps.
Let us know how you go on.
My (key related) gear (in alphabetical order):
Kawai: K1 II
Korg: M1 (up'd to EX, w/ 'Cool Blue'), M1REX (w/ 'Cool Blue'), Poly-800
Roland: D-50, D-110, D-550, PG-1000
Yamaha: AW1600, DX7IID (w/ 'Cool Blue'), EX5R, RM50, RX5, SY99 (w/ 'Cool Blue'), TG500, TX-802, YMM2
Sector101: SYEMB05 (5x), SYEMB06 (3x), EXFLM2 (1kit), MCD Sweet16 (1x), WaveBlade 8MB Card (1x) & 1x Programmer Unit for WaveBlade