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'Tech Flash' Posts

Instructional and fix-it posts, collected in the Tech Flash page for easy perusal.

Some of the chord buttons on my Optigan don’t work. How do I fix this?

Posted by peahix on 23rd April 2006

Usually this problem can be cleared up by getting into the contact board and using a pencil eraser to “erase” all the gunk and oxidization from the contacts. This process is actually very easy- it just takes awhile to gain access to the contact board itself. Sometimes the problem remains no matter how much you [...]

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How do I dismantle my Optigan for repairs?

Posted by peahix on 23rd April 2006

The quick and dirty answer to this question is: just get in there and start unscrewing everything in sight!! While it can be a time consuming process, Optigans are not that hard to take apart and your intuition should guide you pretty well. Since disassembly varies for the different Optigan cabinet designs, I’m hesitant to [...]

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Why are Optigans so unreliable?

Posted by peahix on 23rd April 2006

The design team for the Optigan largely came from a toy manufacturing background, and consequently most of the engineers thought purely in mechanical terms. There were many elements of the Optigan’s design that could have been much better handled using electronic parts and transistors (such as the disc drive system), but even after designing and [...]

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Posted in FAQ, Tech Flash | 1 Comment »

Optigan Audio-Output Mod

Posted by peahix on 22nd April 2006

Here’s a freebie from the Service Manual – it’s instructions on how to modify the outputs on your Optigan to be more suitable for recording and amplifying. Optigan Audio-Output Mod [pdf]

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Optigan schematics

Posted by peahix on 22nd April 2006

yes its true, a service manual *still* exists 34001 (in .pdf format) 35001 / 35011 / 35012 (in .tif format) 35002 / 37003 (in .tif format) You can also purchase a pdf of the entire Optigan service manual on our Shoptigan page.

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Posted in Tech Flash | 8 Comments »

 
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