Thursday, December 27, 2012

Synthi pots replacement

After replacing the 3 oscillators and the filter pots in the past, i decided to get rid of all the other 70's cheap CTS scratchy potentiometers. this is a time consuming task so i'm taking it easy, day by day.
i ordered some nice new alpha 24mm pots from which has a great selection of them and good prices as well.  i really don't want to make any mistakes with the complicated wiring inside the synthi .this is a crowded area which i need to work in, with an iron in one hand while the other hand is trying to support the synthi body and make all the rest. i decided to take a "before" photo of each potentiometer , just to be on the safe side, as my memory is not as sharp as it used to be...
this is working pretty well , and i'm more then happy with the performance of the new pots. the machine is much better now. the only mistake i did was pulling the attack "neon" lamp wire a bit too hard which broke one lead from the lamp glass body. this cannot be fixed , so I've been trying to find the same replacement lamp (25mA 24v ).well, i did find some very similar lamps online but not exactly the same (the resistance of the lamp is not the same -which can effect the total decay time ) so i ended up contacting robin wood from EMS UK , in order to purchase the very same lamp. i was happy to know that they still hold these in stock and ready to ship. Btw, robin is a great and supportive guy . here are some pics from that experiment:

"....neon lights, shimmering neon lights..."

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