SIMMONS SDS EPB Reparatur Service
21. Februar 2018
Jasper WASP Clone
26. März 2018
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This RSF DD30 drumcomputer had a leaky battery, like most of the old equipment. A leaky battery can cause a bad disaster to your machine, depending on how much damage the battery made. In this case the battery was already taken out but I can show you some damage that was made by the battery substance. This resistor (and some more components) for example was eaten by the battery.
After a good cleaning I found severval traces which were totally destroyed or, in this case, interrupted in radom places, which makes troubleshooting not easier;)
Some IC sockets hat to come off for two reasons. 1. The contacts were corroded. 2. Traces underneath could be damaged.
Besides that damage the mains transformer had a transport damage, psu needed new caps, the regulators needed to be changed, cables, contacts, IC sockets, all switches and potentiometer needed a good cleaning, no contact cleaner (as usual). So all in all some kind of work. Now it´s running again. Here's my photo story like usual. Have fun;)
There are lethal voltage exposed in electronic devices. Unless you know what you are doing, don’t try this. If you following along, you doing so at your own risk.
I’m documenting repairs for my reference and yours.
I do synth restorations and repair with a specialty in vintage synthesizers, drum computer and other vintage gear, based in Düsseldorf, GER. Get in touch about your synth situation!
