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Article #1273

Re: Internal Modem Problem - NO DIALTONE (analogue problem?)

#1273
From: David Longley
Date: Wed, 15 Oct 1997 00:00
42 lines
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In article <3443C73B.4241@www.flash.net>
           eklotz@ww.flash.net "Edwrad Klotz" writes:

> David Longley wrote:
> > 
> > I  have  an odd problem with an Internal V34 fax  modem,  a  half
> > length, V1428VQH dynalink I think.
> > 
> > The  modem  is recognized by the PC in DOS, and  responds  to  AT
> > commands  with OK and passes diagnostics. The problem is that  it
> > never picks up the line and always responds with NO DIALTONE.
> > 
> > I've swapped leads and suspect a problem in the analogue side  of
> > the board, maybe a relay?
> > 
> > Anyone  prepared to have a look at the thing for me,  or  suggest
> > what it might be? I can't afford to get it repaird, these tyhings
> > too cheap for the labour costs these days - but it seems a  shame
> > to junk it when all the digital side passes OK. Will pay  postage
> > costs of course.
> > --
> > David Longley
> > 
> > Longley Consulting                                                  London, UK> > Behaviour Assessment & Profiling Technology,
> > Research, Data Analysis and Training Services,
> > Small IT Systems                                http://www.longley.demon.co.uk> Ive found several of these problems to be an open transformer at the RJ
> plug side. Fine windings (should measure about 50 ohms on both primary
> &  secondary. This usually happens after an electrical storm.
> Transformers used to be readily available. Ive used transformers from
> older modems that have close to the same resistance.
>                                 ED
> 
I  suspect that's EXACTLY what happened - my problem  is  finding 
one. Anyone help?
-- 
David Longley (check end reply line #)

Longley Consulting                                                  London, UK
Behaviour Assessment & Profiling Technology,
Research, Data Analysis and Training Services,
Small IT Systems                                http://www.longley.demon.co.uk
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From: David@longley.demon.co.uk (David Longley)
Subject: Re: Internal Modem Problem - NO DIALTONE (analogue problem?)
Date: 1997/10/15
Message-ID: <876919218snz@longley.demon.co.uk>
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