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21. Re: [TenTec] Corsair II problem (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>; Date: Thu, 20 Jan 2011 14:33:00 -0600; The counter, display driver, and keyer are all done by a 68C05 on the display board. It fails when the electrolytics go bad. It can also fail from loosing power from a dirty board connection. It does; /archives//html/TenTec/2011-01/msg00466.html (7,983 bytes)
22. Re: [TenTec] Corsair II problem (score: 1): Author: Don Rasmussen <wb8yqj@yahoo.com>; Date: Thu, 20 Jan 2011 18:52:00 -0800 (PST); Thanks Dr. Jerry, I swapped the 68C05 into another radio and it works fine. There is 5V on the pins where it is required, and I can hear the crystal oscillating using an external receiver. All this,; /archives//html/TenTec/2011-01/msg00468.html (7,814 bytes)
23. Re: [TenTec] Corsair II problem (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>; Date: Thu, 20 Jan 2011 20:59:12 -0600; That capacitor on the reset pin may not be terribly critical, I'd expect anything from 1 mf to 10 mf would work adequately because electrolytics have very loose tolerances anyway. An open capacitor o; /archives//html/TenTec/2011-01/msg00469.html (9,485 bytes)
24. Re: [TenTec] Corsair II problem (score: 1): Author: Don Rasmussen <wb8yqj@yahoo.com>; Date: Thu, 20 Jan 2011 19:31:39 -0800 (PST); Photo of C6 removed ;-) http://www.zerobeat.net/wb8yqj/c6.jpg _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/te; /archives//html/TenTec/2011-01/msg00470.html (7,055 bytes)
25. Re: [TenTec] Corsair II problem (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>; Date: Thu, 20 Jan 2011 23:31:33 -0600; End bulged or the lead broken in the end insulator? Its a little blurry. 73, Jerry, K0CQ _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contest; /archives//html/TenTec/2011-01/msg00471.html (8,042 bytes)
26. Re: [TenTec] Corsair II problem (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>; Date: Thu, 20 Jan 2011 23:35:11 -0600; If that's open it won't reset. It could be checked by grounding that pin of the 68C05 momentarily. To see if that makes it start. 73, Jerry, K0CQ _______________________________________________ TenTe; /archives//html/TenTec/2011-01/msg00472.html (7,676 bytes)
27. Re: [TenTec] Corsair II problem (score: 1): Author: Don Rasmussen <wb8yqj@yahoo.com>; Date: Fri, 21 Jan 2011 11:30:31 -0800 (PST); At first I thought it was glued to the PCB, after removing it it became obvious that the liquid on the capacitor was leaking down all over everything. Heading to Frys to find a 2.2 replacement, may; /archives//html/TenTec/2011-01/msg00474.html (8,289 bytes)
28. Re: [TenTec] Corsair II problem (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>; Date: Fri, 21 Jan 2011 13:47:25 -0600; Take tantalum over aluminum. Just say, $2K radio disabled by a ten cent part. _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mai; /archives//html/TenTec/2011-01/msg00475.html (8,237 bytes)

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