[Info-vax] System doesn't display anything on the Console port.

[Bill Gallagher]

Sadly a leaking battery can do just this. I have a MicroVax 2000 that was killed by a leaking clock battery. The electrolyte leaked out and ran down the PCB, managing to open-circuit several tracks. On this the >>> prompt does appear, but the data from the console input is not getting in.


Bill Gallagher
Phone:	+353 87 2494298
Skype:	bill.gallagher2011

-----Original Message-----
From: Info-vax <info-vax-bounces at rbnsn.com> On Behalf Of Ed Rahn via Info-vax
Sent: Thursday 4 March 2021 02:30
To: info-vax at rbnsn.com
Cc: Ed Rahn <edrahn01 at gmail.com>
Subject: Re: [Info-vax] System doesn't display anything on the Console port.

On Thursday, February 25, 2021 at 2:14:33 AM UTC-6, Jan-Erik Söderholm wrote:
> Den 2021-02-25 kl. 03:58, skrev abrsvc: 
> > On Wednesday, 24 February 2021 at 19:06:35 UTC-5, edra... at gmail.com wrote: 
> >> On Wednesday, February 24, 2021 at 5:32:39 PM UTC-6, Jeffrey H. Coffield wrote: 
> >>> On 02/23/2021 02:49 PM, Ed Rahn wrote: 
> >>>> I just bougtht a Microvax 3100-10 and I don't seem to get anything out of the console ports. I've got a USB to NULL to H8571J to MMJ daisy chain. Should that be whats needed? I get the same thing if I remove the NULL conversion. 
> >>>> 
> >>>> All the LED's are light after power and seem to turn off then at some point in the future. 
> >>>> 
> >>>> Any ideas what could be going on? According to the documentation nothing is being executed. That doesn't really help much. 
> >>>> 
> >>>> Thanks,
> >>>> Ed
> >>>> 
> >>> What do the eight LED's on the back of the system box show during power up? 
> >>> 
> >>> See http://home.iae.nl/users/pb0aia/vax/3100leds.html for a 
> >>> description of what they mean
> >>> 
> >>> Jeff Coffield
> >>> www.digitalsynergyinc.com
> >> The lights do not turn off. According to the link you included that means it's not executing any instructions. What exactly does that mean? 
> > 
> > IRRC the system may not be in automatic boot which means that "no instructions" are executing. By itself, that state means nothing. 
> > 
> > Any chance you have a "real" terminal that can be connected with a DECconnect cable? 
> >
> Even if the console firmware boot option is not set to "AUTO", I'd 
> expect the firmware code to start executing anyway. Are you sure that 
> it would stay in the "no instructions has executed"
> state if the console is set to "non-AUTO" (I do not remember if it was 
> "HOLD" or such)?
> 
> I'd guess that the current status of this system is "dead".

Would a leaked battery do this?

Ed
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