11/73 (ba23) bringup after 12 years in deplorable storage conditions

js at cimmeri.com js at cimmeri.com
Thu Nov 20 17:26:28 CST 2014

Perfect example of only listening to 
what one wants to hear.

On 11/20/2014 4:34 PM, Jacob Ritorto wrote:
> Good deal.  I guess I'm just gonna go for it after a cursory inspection and
> dusting.  It has stayed utterly dry; just the temp and dust were concerns.
> I'll report back in a while..  Thanks!
> On Thu, Nov 20, 2014 at 3:55 PM, Ian S. King<isking at uw.edu>  wrote:
>> At the very least, take a good long look at the power supply and its caps.
>> Has the storage, as bad as it's been, been dry?  If not, you'll almost
>> certainly have corrosion all over the place, especially in the fastons ISTR
>> run power to the backplane.  (I haven't looked at my own 11/73 in a few
>> years, but it's in a dry, temperature-stable basement.)
>> Best of luck! - Ian
>> On Nov 20, 2014 12:32 PM, "Jacob Ritorto"<jacob.ritorto at gmail.com>  wrote:
>>> Hey all,
>>>    I've been getting the bug worse and worse to start working on a real
>>> pdp11.  The Raspberry Pi / simh emulation is fantastic, but my hunger for
>>> authenticity is becoming rampant.  I haven't run the youngest in my fleet
>>> of pdp11s, the 11/73, since circa 2002 and if I recall correctly, it was
>>> becoming flaky and popping out to ODT inexplicably from time to time back
>>> then (I think this is the one with the notoriously combustible power
>> supply
>>> wires that probably haven't been ECO'd yet -- need to get to that too).
>>> It's been lying in a warehouse in western Pennsylvania with no heat and a
>>> lot of dust.  So, worst case, we're talking temperature transients around
>>> 110 F and -20 F with no protection.  It did stay quite dry.
>>>    Think it'd be bad to simply blow the dust off and fire it up?
>>> thx
>>> jake

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