Gleeman Pentaphonic – this one had been killed by another repairer during a battery replacement. Thankfully the unit was not “blown up”, the issue was a failed solder joint on a power connector that caused a connector pin to fail, and the wire connected to that pin to fail. Not too difficult a repair, but it does cause concern about “techs” changing batteries but unable to do anything else and putting a rare and valuable keyboard at risk. I also re-bushed the keyboard and the customer was delighted to have his treasure back working as good as new!
This is the see-through model, and reportedly there were only 20 made. This one had failed solder joints in the power supply, and on the front panel. The keyboard needed re-bushing, and there was an issue with every 6th key being louder, and issue with the switching chips also sending audio through the sequencer. We managed to swap chips around so we could use an unused chip section, and are trying to find another chip. The keyboard is being used without the sequencer for now.