Here are some free PCBs files I’ve designed for vintage synthesizer repair, restoration, and future-proofing.
TDA 0470 Replacement PCB
This PCB is a direct drop in replacement for the TDA 0470 gating chip used in the (ARP) Solina String Ensemble. These chips are half a century old so unsurprisingly they’re failing, a failed chip is usually characterised by a chunk of the keyboard not working, although other things could potentially cause this issue too. To get this replacement, download the PCB…