Gear

Casio MG-510 Midi Guitar

Back when I documented the repair of the Casio PG-380 MIDI Guitar, I had no idea that this post was going to dominate the traffic patterns to my little home on the web. Fully 1⁄3 of all visitors to this site come to that post, asking questions, posting comments, and requesting repairs. One request I’ve gotten over and over is a repair on the Casio MG-510. The Casio MG-510 is like the little brother of the Casio PG-380.…

Casio PG-380 Midi Guitar

Several months ago Jason asked me if I could fix a MIDI Guitar. I didn’t have the slightest idea how to fix one, and had only speculative knowledge about how they work, so naturally I said “yeah, sure, piece of cake”. If I’d have known at the time the kind of gear lust this project would create I might have turned him down at the outset. The Casio PG-380 is a guitar that translates the notes you pick on the strings into MIDI Notes.…

Inside The Korg DW-8000

Recently a friend asked how hard it was to replace the CMOS battery in Korg DW-8000 keyboard. I assumed it couldn’t be that hard, looked up what kind of battery it accepted (CR2032) and said “yeah, 5 minute job”. I failed to take into account early 80s circuit construction. Sure, its no Maestro PS-1B, but I certainly discovered some “opportunities” upon cracking open the case… Getting it open is easy enough.…

Cheap and Easy Speaker Stands

I built some speaker stands recently for the home studio. Rather than go through the trouble to add all the steps here, I just created an Instructable for it. You can find it here: DIY Speaker Stands for Cheap I got the original idea from these guys, but I thought they were a bit small so I scaled them up. Here is a picture of them setup in the studio:…

Maestro PS-1B Teardown

A friend of the band recently had a problem with his Maestro PS-1B, a phase shifter from the early 70’s designed by the famous Tom Oberheim, and asked me to take a look at it. Based on the problem, a loud humming at the output with no sign of any other signal, I figured it should be an easy fix. It was probably just a ground fault or a bad output or something, so I took it home with me and cracked it open.…