Month: July 2021

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ARP Pro Soloist Dead Presets Repair – Synthchaser #140

It’s very common for some of the presets on the ARP Pro Soloist (and Pro/DGX) to be dead or just not sound like they should. It’s also common for people to blame these problems on the Pro Soloist’s ROMs, when they are rarely, if ever, what really has failed. In this video we track down and repair 4 dead/incorrect voices including the ubiquitous Fuzz Guitar I so the customer can get his Tony Banks back on.

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Tom Oberheim SEM Pro Repair – Synthchaser #139

In this video we have a look around inside the new Marion Systems Tom Oberheim SEM Pro. And thanks to the kindness and generosity of Tom Oberheim himself, we’re able to repair a problem this one is having with an envelope randomly getting stuck “on”. The birds in my area love Oberheims (remember the OB-Xa Hummingbird?), and a Red-Tailed Hawk comes to check out the repair job.

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Roland Jupiter 4 JP-4 Repair – Synthchaser #138

In this video we have a look around inside the mighty Roland JP-4 synthesizer and see how it works. Then we troubleshoot and repair this dead Jupiter 4.

00:39 – The Problem: No Output

01:28 – Tour Inside / Technical Overview

06:10 – Power Suppy Check

07:04 – CPU Check

11:56 – Key Assigner Board Check

13:30 – Main Motherboard Check

16:07 – DAC Troubleshooting

20:25 – Making The Repair

22:46 – Jupiter 4 Repaired!