Oberheim OB-X Serial No. 802311 - action 5 (Nov 28, 2011)
Channel: krunkwerke
Date: 2011-12-28

Installment 6 of an 8 video series: https://www.youtube.com/playlist?list=PLFE374F594E6CEBB8&feature=view_all

November 28, 2011 - Oberheim OB-X Serial No. 802311 is experiencing problems with tuning. This video documents the troubleshooting strategy, which has been adopted when working to locate the root cause of the problem.

Here, the sample-and-hold circuit for KCV2 has been isolated, as the likely cause of the tuning problem. This theory is tested, by swapping components from the KCV2 sample-and-hold (A60, A61), with those for KCV6 (A62, A63).

See the photos, for this repair, here:
http://www.flickr.com/photos/krunkwerke/sets/72157628158499373/

Learn more about the details of this system, in its system log: http://zope.hardwerke.ca/projects/resources/electronic-music/manufacturers/oberheim/ob-x/systems/802311