OK. Now I know what frequency lock-up means <gr>.
You should have pulses coming from both pahse lines. Wonder if you lost the
supply voltage or ground to the encoder. The only other possibility for no
pulses would be a bad encoder I guess.
-----Original Message-----
From: N1EU <n1eu@yahoo.com>
To: tentec@contesting.com <tentec@contesting.com>
To: <tentec@contesting.com>
Date: October 09, 1999 1:59 PM
Subject: Re: [TenTec] Frequency Lockup Blues
>
>To answer the questions posed by Phil & Steve, never
>happened before and PS is a nice TT 961.
>
>All of the other functions seem to be working except
>main tuning. User options can be set and retained,
>etc. and even RIT functions so she's not brain dead
>for sure.
>
>I looked at some of the digital lines, and would
>really appreciate some help with diagnosis. Here's
>what I've seen on the logic board - I started looking
>at the tuning encoder lines. RIT ("OFFSET") pulses
>are clearly seen coming into U19 pins 1/2/5/6 and U20
>21/22. However, no pulses at all are seen from the
>Main Tuning encoder coming into U18 8/9 or U20 19/20.
>Am I correct in assuming pulses should be seen there?
>I would be extrememly grateful for any hints on
>further troubleshooting.
>
>Tnx & 73,
>Barry N1EU
>
>
>
>
>=====
>
>__________________________________________________
>Do You Yahoo!?
>Bid and sell for free at http://auctions.yahoo.com
>
>--
>FAQ on WWW: http://www.contesting.com/tentecfaq.htm
>Submissions: tentec@contesting.com
>Administrative requests: tentec-REQUEST@contesting.com
>Problems: owner-tentec@contesting.com
>Search: http://www.contesting.com/km9p/search.htm
>
--
FAQ on WWW: http://www.contesting.com/tentecfaq.htm
Submissions: tentec@contesting.com
Administrative requests: tentec-REQUEST@contesting.com
Problems: owner-tentec@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|