[sdiy] The fatman is finished...

[Gabriel Lindeborg]

Hi Crow!

 > The Old Crow wrote:
> It sounds like the 8031 is not running.  Check to see if there is a
> processor clock at IC1 pin 18 (or 19, whichever is the internal osc
> output)...

The up seems to be running as I get totaly different power up behavior 
when I remove the crystal.

>or check for the ALE strobe pulses at pin 30.

The ALE output stays at a constant 0V as far as I can tell with the 
simple multimeter I got at hand.

> Are C2 and C3 the
> listed 33pF values?

Yep, marked 33 anyway...

> Check for solder bridges, cracked traces, etc. in the 
> IC1/IC2/IC3 === MCU/latch/ROM connections.  Check IC4 connections as well.

The soldering and traces has been scrutinezed w. a loupe, over and over 
again (I feel pretty confident w. the soldering as I have soldered for a 
living some years ago).

I'll try to reburn the 2764... but then again the power up behavior 
should be constant if thats the problem, shouldn´t it?

//Gabriel - I wish I had a scope at home...