Re: TECH: Tempest Mathbox "M" error

By "Also reflowed solder to the connector plug to no avail." you mean on
the main board, right?

Steve P. wrote:

> Hi.
>
> Thanks for the reply. I'm using the cable that's attached to the good set
>of PCBs, so the cable should be good.
>
> I've swapped the bad AUX board onto my good PCB using the interconnect
>cable that was attached to the good main PCB. I've swapped all of the
>socketed chips on the AUX board and still get the "M" error on the self
>test. Also reflowed solder to the connector plug to no avail.
>
>
>
>-Steve P.
>
>
>----- Original Message -----
>From: "Paul Maddern" <paul@pobtastic.co.uk>
>To: <vectorlist@vectorlist.org>
>Sent: Monday, August 09, 2004 11:59 AM
>Subject: RE: VECTOR: TECH: Tempest Mathbox "M" error
>
>
>
>
>>Have you checked your interboard connect cable? "M" isn't a specific
>>
>>
>error,
>
>
>>it just means Mathbox failure - if you're swapping in known good ALUs in
>>
>>
>and
>
>
>>everything on the AUX board 'looks' okay that's the first place I'd look
>>myself.
>>
>>Pobster
>>
>>-----Original Message-----
>>From: owner-vectorlist@vectorlist.org
>>[mailto:owner-vectorlist@vectorlist.org] On Behalf Of Steve P.
>>Sent: 09 August 2004 16:35
>>To: vectorlist@vectorlist.org
>>Subject: VECTOR: TECH: Tempest Mathbox "M" error
>>
>> Well, the Tempest board that I posted a tech question to the list about
>>
>>
>the
>
>
>>other day lasted about 15 hours before dying again. I do have a spare
>>
>>
>board
>
>
>>on hand which makes troubleshooting a bit easier. The main board seems to
>>have blown out the XY circuitry again (the TL082 and/or MC/SG1495s). The
>>AM6012s are good as my PCBs are socketed there and I can swap the chips to
>>my good board set to test. I am going to socket the TL082 and MC/SG1495s
>>this time around and we'll see if replacing those fixes the main board
>>again.
>>
>> The AUX board on the now bad PCB set I swapped over to the good PCB and
>>
>>
>now
>
>
>>get a "M" mathbox error on the self test. I've swapped all of the
>>
>>
>socketed
>
>
>>chips on the AUX board with those from my good AUX board and still get the
>>"M" error. I've reflowed solder to the interboard connector plugs and
>>
>>
>still
>
>
>>get the "M" error. Any ideas on where to start on with one?
>>
>> Thanks in advance!
>>
>>-Steve P.
>>
>>
>>--------------------------------------------------------------------------
>>
>>
>-
>
>
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>>** Please direct other questions, comments, or problems to
>>
>>
>chris@westnet.com
>
>
>>
>>
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>>
>>
>-
>
>
>>** Unsubscribe, subscribe, or view the archives at
>>
>>
>http://www.vectorlist.org
>
>
>>** Please direct other questions, comments, or problems to
>>
>>
>chris@westnet.com
>
>
>
>
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Received on Mon Aug 9 14:02:58 2004