To: | <tentec@contesting.com> |
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Subject: | [TenTec] Digital readout Corsair II |
From: | geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer) |
Date: | Sun, 27 Oct 2002 20:52:18 -0600 |
Check the 5 volt supply to the CPU that drives the readout. Check the frequency lines from the band switch, and check or replace all the aluminum electrolytics in that readout driver. Old aluminum electrolytics, especially the miniature ones have a relatively short life them and then they can be quite temperature and vibration sensitive. Check the socket pins, perhaps by applying a quarter drop of DeOxit to each and moving the chip around and the readouts. 73, Jerry, K0CQ -- Entire content copyright Dr. Gerald N. Johnson, electrical engineer. Reproduction by permission only. |
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