OBERHEIM SYNTH

Usually it is CR2032 type, or CR2450 - 3 Volts.

Some instruments have special batteries of different shape, not cell  
type. One of my instruments has special backup capacitors, not  
batteries (I think Technics WSA1R). And some instruments have battery  
holder installed from factory.

Problem with some instruments is there's not enough space for the  
holder on the main board, even when used vertically. Then it's  
necessary to improvise a little bit, find another placement for the  
holder and connect it with PCB with cables. In such case it's good to  
cover holder with plastic tubing or tape to avoid possible short  
circuit. Or place the holder to small PCB and screw it somewhere firmly.

Solder plates on PCB for battery are usually big so pin distance is  
not so critical - if necessary, new holes can be drilled.

In some cases it's also good to think twice about the placement of  
battery holder - for example right now I have opened DX7 II D (I will  
change OS Eprom), where main board is placed (and screwed) so that  
battery is not accessible. In such case it can be a good idea to  
solder battery holder on opposite side, not to the component side...

Daniel Forro


On Jun 8, 2016, at 9:22 PM, solar_tapestry@... [oberheim] wrote:

>
> Also, I would think that having the correct voltage is very import  
> as they arent all the same. Its worth noting installing a battery  
> holder with different specified voltage can permanently damage your  
> equipment I would venture to guess.
>
> Maybe I will propose and post this at Gearslutz likewise or someone  
> else can start it if they like. To my knowledge the DX7 series,  
> Matrix 6/1000, QS, Z1, Alpha Juno/MKS-50 and more all have soldered  
> batteries.
>
> These are very popular instruments and would think there is interest  
> in having this reference info.