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 Forum index » DIY Hardware and Software » The Repair Shop
Vintage ARP ODYSSEY MKIII LFO issue
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gregcomposition



Joined: Oct 20, 2013
Posts: 20
Location: Poland
PostPosted: Mon Aug 07, 2023 3:18 pm    Post subject: Vintage ARP ODYSSEY MKIII LFO issue Reply with quote  Mark this post and the followings unread
After long long long time (~5 years) I returned to repair my Odyssey MKIII.
Finally I desoldered and thoroughly cleaned all potentiometers and calibrated the boards according to the instructions. Now everything works except the LFO - no oscillation regardless of the position of the slider. Could something have happened during the calibration process?
Has anyone had a similar problem?
Thanks for any advice.
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gregcomposition



Joined: Oct 20, 2013
Posts: 20
Location: Poland
PostPosted: Thu Oct 19, 2023 10:58 am    Post subject: Reply with quote  Mark this post and the followings unread
And the answer is: two defective IC chips Smile
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elmegil



Joined: Mar 20, 2012
Posts: 2179
Location: Chicago
Audio files: 16
PostPosted: Tue Nov 21, 2023 8:45 pm    Post subject: Reply with quote  Mark this post and the followings unread
Those tricky IC chips will get you every time Wink
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gregcomposition



Joined: Oct 20, 2013
Posts: 20
Location: Poland
PostPosted: Wed Nov 22, 2023 3:33 pm    Post subject: Reply with quote  Mark this post and the followings unread
I agree completely.
The most vintage parts work more than fourty years and the modern parts are fault after two weeks.
I don't like the way this thing's going...
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