OBERHEIM SYNTH

The red wires go to a diode bridge which smooths out the AC to the capacitor that the black gnd wire is connected to to give DC? Basically a larger version of what the two black things with heat sinks on are?

 


     On Wednesday, 12 August 2015, 9:36, "brel pushwithlegs@... [oberheim]" <oberheim@yahoogroups.com> wrote:
   

     [Attachment(s) from brel pushwithlegs@... [oberheim] included below] hi all,
long time reader but haven't really posted.
recently inherited a non functional OB8 - good news is that it powers up and the lights change when different presets are selected however there is no audio output.

upon inspection it appears someone has replaced the battery (logical)
but also added a mysterious mod that comes a removed rectifier (i believe) and connects to another point on the circuit board as can be seen in the photograph.

does anyone know what this mod might have been for and how one might proceed in repairing?
cheers
Sam