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Total 18 documents matching your query.

1. [TenTec] Paragon is it dead? (score: 1): Author: Louis Ciotti <lciotti1@gmail.com>; Date: Sat, 10 Sep 2016 16:34:23 -0400; OK so I thought I was making good progress resurrecting a paragon, but now I thing it may be "brain dead" . It worked the last time I had it on the bench, but now when that I have time to finish gett; /archives//html/TenTec/2016-09/msg00136.html (7,191 bytes)
2. Re: [TenTec] Paragon is it dead? (score: 1): Author: Carl Moreschi <n4py3@earthlink.net>; Date: Sat, 10 Sep 2016 18:28:10 -0400; Did you press the3 reset button on the side with power on? This will clear out memory. Carl Moreschi N4PY 58 Hogwood Rd Louisburg, NC 27549 www.n4py.com On 9/10/2016 4:34 PM, Louis Ciotti wrote: OK s; /archives//html/TenTec/2016-09/msg00139.html (8,399 bytes)
3. Re: [TenTec] Paragon is it dead? (score: 1): Author: Louis Ciotti <lciotti1@gmail.com>; Date: Sat, 10 Sep 2016 18:49:58 -0400; Yes I did, that did nothing. I probed a bit with an "old school" logic probe and there are some signals going on so I do not thing it is the CPU itself. When I power it up, sometime I hear several re; /archives//html/TenTec/2016-09/msg00141.html (7,786 bytes)
4. Re: [TenTec] Paragon is it dead? (score: 1): Author: Mike Bryce <prosolar@sssnet.com>; Date: Sat, 10 Sep 2016 19:32:12 -0400; Sounds like maybe you got a connector slipped one pin over, or on the wrong socket. Check all those cable around the area you were working on and then expand to other boards. Its quite easy to miss a; /archives//html/TenTec/2016-09/msg00142.html (9,255 bytes)
5. Re: [TenTec] Paragon is it dead? (score: 1): Author: Louis Ciotti <lciotti1@gmail.com>; Date: Sat, 10 Sep 2016 19:39:16 -0400; I will check again, but I did do a quick check already. There probably is no defence that should what data is sent where so I can do a check with a logic analyzer? Sent from my Galaxy S6. ___________; /archives//html/TenTec/2016-09/msg00143.html (9,780 bytes)
6. Re: [TenTec] Paragon is it dead? (score: 1): Author: Al Gulseth <wb5jnc@centurytel.net>; Date: Sat, 10 Sep 2016 20:10:10 -0500; If it's been sitting around for a while I'd suspect an oxidized connector or an electrolytic that needs to be re-formed. You might just power it on and let it "bake" for a day or so to see if that do; /archives//html/TenTec/2016-09/msg00145.html (8,764 bytes)
7. Re: [TenTec] Paragon is it dead? (score: 1): Author: Louis Ciotti <lciotti1@gmail.com>; Date: Sun, 11 Sep 2016 10:25:22 -0400; Well I am still stuck here. I have double checked all the connections that I could have possibly touched, and everything is correct. At this point upon power up I do get a quiet hiss out of the speak; /archives//html/TenTec/2016-09/msg00155.html (8,653 bytes)
8. Re: [TenTec] Paragon is it dead? (score: 1): Author: Lee <lee@wa3fiy.com>; Date: Sun, 11 Sep 2016 19:12:44 +0000; Louis, from your description of the problem, I don't think this is the issue but I send this link to you for reference. http://tentecwiki.org/doku.php?id=585disp Hope you find the culprit. The Parago; /archives//html/TenTec/2016-09/msg00164.html (10,254 bytes)
9. Re: [TenTec] Paragon is it dead? (score: 1): Author: Stuart Rohre <rohre@arlut.utexas.edu>; Date: Mon, 12 Sep 2016 15:14:51 -0500; On rigs that suddenly die on the bench, check for things like a scrap of wire shorting out something under the chassis. Also, check for good contact on board interconnections by removing power and on; /archives//html/TenTec/2016-09/msg00204.html (8,296 bytes)
10. Re: [TenTec] Paragon is it dead? (score: 1): Author: Louis Ciotti <lciotti1@gmail.com>; Date: Mon, 12 Sep 2016 19:26:54 -0400; OK so after work today I started to probe around on the logic board with an oscilloscope and every signal looks OK.. OK in that it looks like 5V logic data. Looking at the ICs and where the signal go; /archives//html/TenTec/2016-09/msg00211.html (9,467 bytes)
11. Re: [TenTec] Paragon is it dead? (score: 1): Author: Stuart Rohre <rohre@arlut.utexas.edu>; Date: Tue, 13 Sep 2016 13:41:02 -0500; One of the posts mentioned checking to see if the back up battery is fresh (and full voltage). If the coin type batteries or similar are used, they may need replacement in 3 to 7 years depending on t; /archives//html/TenTec/2016-09/msg00229.html (8,715 bytes)
12. Re: [TenTec] Paragon is it dead? (score: 1): Author: Louis Ciotti <lciotti1@gmail.com>; Date: Wed, 14 Sep 2016 12:42:16 -0400; Fresh battery is in place. I really thing it is either a dead CPU or the EEPROM got scrambled. I found a source for a low cost CPU so I ordered it. When looking at the signals with the O'scope, the I; /archives//html/TenTec/2016-09/msg00238.html (10,013 bytes)
13. Re: [TenTec] Paragon is it dead? (score: 1): Author: Carl Moreschi <n4py3@earthlink.net>; Date: Wed, 14 Sep 2016 12:58:12 -0400; I have Paragon code that I developed that adds some features. I can't burn eproms anymore but I can help you here. Carl Moreschi N4PY 58 Hogwood Rd Louisburg, NC 27549 www.n4py.com I really thing it; /archives//html/TenTec/2016-09/msg00239.html (10,991 bytes)
14. Re: [TenTec] Paragon is it dead? (score: 1): Author: Mike Bryce <prosolar@sssnet.com>; Date: Wed, 14 Sep 2016 13:26:21 -0400; FYI. The last Paragon I worked on had about the same issues. I traced the problem to two common CD4000 series ICs in the rear left corner of the mother board. Its been so long that I dont remember th; /archives//html/TenTec/2016-09/msg00240.html (9,976 bytes)
15. Re: [TenTec] Paragon is it dead? (score: 1): Author: Louis Ciotti <lciotti1@gmail.com>; Date: Wed, 14 Sep 2016 20:30:10 -0400; Thanks Mike. I scoped out those two ICs (U10 and U111), and they appear to be functioning fine, at least the signals coming out of them look like TTL logic. The last Paragon I worked on had about the; /archives//html/TenTec/2016-09/msg00244.html (11,066 bytes)
16. Re: [TenTec] Paragon is it dead? (score: 1): Author: Louis Ciotti <lciotti1@gmail.com>; Date: Wed, 14 Sep 2016 20:31:51 -0400; That is great Carl, When the CPU comes in (Hopefully by the weekend) I will have to see if anything changes. Carl Moreschi N4PY 58 Hogwood Rd Louisburg, NC 27549 www.n4py.com I really thing it is eit; /archives//html/TenTec/2016-09/msg00245.html (12,037 bytes)
17. Re: [TenTec] Paragon is it dead? (score: 1): Author: Louis Ciotti <lciotti1@gmail.com>; Date: Thu, 22 Sep 2016 21:54:34 -0400; Small update... The new CPU arrived, and that did not fix the problem. I spend a few minuted scoping lines again, and I started to to single sweeps with the scope, and I noticed something odd on some; /archives//html/TenTec/2016-09/msg00311.html (9,299 bytes)
18. Re: [TenTec] Paragon is it dead? (score: 1): Author: Al Gulseth <wb5jnc@centurytel.net>; Date: Fri, 23 Sep 2016 20:09:54 -0500; Is this possibly a bypass cap issue letting glitches get out on the power bus? (I tried to build a digital (TTL) doorbell back when before I understood the finer points of layout and bypassing - it w; /archives//html/TenTec/2016-09/msg00313.html (10,294 bytes)

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