I'm so excited!
With the #fedihelp of @RueNahcMohr @kallemp @kevinevans I was able to repair the display in my #Ensoniq #ESQ1 #Synthesizer.
One of the TL4810AN display driver chips was defective. Ebay suggested me an UCN5810AF as an alternative. I checked data sheets and it seemed to match. The UNC was available in Germany, while TL replacements I had ordered are still stuck somewhere in China.
The grain of salt is that after putting together the entire thing, I noticed that one key still is not acting properly. I have to take apart pretty much everything for that at some point…
I also put in new firmware chips I got from Italy via Ebay, now the thing is on version 3.5. Luckily it loads the factory preset if it runs out of battery power, which it did, because I replaced the battery, too.
I found this cartridge that has a little dial and actually is 16 cartridges in one unit… Ebay from the Netherlands. (Imagine not living in the EU… horrible thought.)
So many fancy new vintage sounds!