Re: Exploding COM ports!

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#658

From: Michael Bending
Date: Wed, 14 Feb 1996 00:00

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On Tue, 13 Feb 1996 21:30:36 GMT, andy@mystiko.demon.co.uk wrote:

>I few months ago I bought a modem to get 'online'.  I bought a
>Motorola 28.8 External modem, and also bought a new IO card with 16550
>UARTS so I could take full advantage of the speed of the modem.
.....the COM port broke....

I had exactly this problem when the Moto modem first came out in
July-ish last year.  It was a known fault with the modem that you get
a nasty spike on the comms line when you power up the modem.  

If you PC is powered up, and its power supply/earthing has the wrong
characteristics, it will blow the I/O card.

Motorola have admitted there has been a problem - contact their user
support on 01293 422600 and they should replace the modem and pay for
the replacement IO board.

--
Mike Bending

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From: mike@bending.demon.co.uk (Michael Bending)
Subject: Re: Exploding COM ports!
Date: 1996/02/14
Message-ID: <31223787.271198@news.demon.co.uk>
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