Akai S900 12Bit Vintage Sampler. Came in with some issues.
I found a bad pass transistor in the PSU. I replaced it with a new one.
I also found some cold solder joints which finally brought this sampler back to full glory.
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!