Posts Tagged ‘SH-3’

Hey that’s not analog!

Well the SH-3 repair and cleaning worked out just fine, and the lovely machine has now returned to the studio. Since I was in fixing mode it seemed like a good idea to take a look at the TR-707 that was sitting in it’s box on the shelf. TR-707? What? That’s not analog..!?!!? I know, I know, we actually plan to sell it since there’s still a demand for these boxes. They were used in the early days of Chicago house and while they are pcm based they still have a desirable sound.

The repair was quite simple, the cause of the problem was two fold. The power jack had some corrosion on it that was causing intermittent power. The previous owner had obviously been wiggling the power jack to get it to work and had eventually broken the solder traces. A simple fix of cleaning the jack and resoldering the pads fixed it. I’m now in the process of giving it a good clean before reassembling it. Once that’s done I’ll give it a good test run of all its features before we put it up for sale.

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03 2009

Further Inspection

So yesterday I started the examination of the SH-3 damage. Luckily it was somewhat superficial. The potentiometer is shot, and the chassis where it sat was bent out of shape, but luckily it seems that was the extent of the damage. It could have been a lot worse. Anyway I replaced the potentiometer and straightened out the chassis as much as possible. It’s not 100% perfect but to completely straighten the mounting point would require a complete disassembly of the entire control surface. So while I had it in pieces I decided I might as well give it all a good clean. I soaked the knobs in some soapy water and used a toothbrush to remove as much grime as possible. There’s still some stubborn grime on some of the knobs so I’ll use something a little stronger on them today and try to remove the last of it. Then it’s time to reassemble it and give it all a good test to see if everything is well again.

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03 2009


Yesterday we started to rearrange some space in the studio. Basically we are trying to optimise the available space. We have an old arcade machine in the main room which was taking up valuable real estate, so we decided it would be better off sitting in the other room so that we could have another rack of keyboards in its place. A lot of stuff was moved around in order to get a trolley in there to move the beast (those old arcade boxes are damn heavy). Everything was going well, we were moving the machine into its new position when we heard the sound of something falling in the main room. Upon inspection we found that the SH-3 had fallen flat on its face. Disaster! A quick inspection revealed that one of the knobs had been bent. How serious the damage is, is unclear at this time. Hopefully it’s not too bad. I’ll be investigating that soon to assess exactly what the damage is, and if its possible to repair.

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03 2009