With these SOIC to DIP adapters I managed to change the LM3046 chips with AS3046 SMD drop-in replacement chips. Next I must re-calibrate Prodigy and see how these SMD-chips behave.
tiistai 4. kesäkuuta 2019
Here is my version of drop-in replacement for uA726 part used in Buchla Easel. I have tested this before here. I ordered the first proto-batch from Eurocircuits. Because of two SMD-parts it's very compact (width = 37mm and height = 17mm). For LM3046 replacement I use ALFA-parts AS3046 (Vbe is matched five times better for the NPN pair than in the original with +- 1mV).
keskiviikko 1. toukokuuta 2019
sunnuntai 3. maaliskuuta 2019
lauantai 12. tammikuuta 2019
Finally found replacement part (jog wheel optical encoder) for my H3000. Adjusting any parameters was impossible when the jog wheel operated erractically. Optical encoder is an obsolete part that Eventide no longer stocks. Studio Electronics Inc. has this part ! It's little bit tricky to replace but I managed to do it and now the jog wheel operates normally.
|Mechanical jog wheel with the optical encoder (led + LDR).|
|Lot of old logic chips inside the H3000 !|