Vehicle instrument panel display malfunction

[62Morgan]

[2004 AllegroBay on W22 Workhorse, 8.1 L gasser w/ Actia Display]

While idling in traffic waiting for street construction crew to let traffic proceed...I turned "Off" vehicle for a 15 minute period. Had been driving for 5 hours that day; last leg was approx. 1-1/2 hrs. Air temp in mid 80's.

Upon crank-up display was blank, no idiot lights & no Christmas tree effect. With blank console; I had to guess at shift position to find "Drive". Drivability was possible, albeit only a paltry 3-5 MPH. Nothing more from the power-plant. Speedo had no reading either [0 mph]. Embarrassing; was creeping forward for a half-mile till a pull-off and traffic backing up behind me. Found a spot, stopped, started fine after a 10 min. wait period. Display back as normal. "Check engine symbol" lit for 6 miles before disappearing. OBD check revealed no error codes whatsoever. Search of forum posts doesn't match my dilemma.

Had replaced Actia 2 yrs ago with newer, orange display [former had suffered pixel drop-out]. Should not be ready for a re-flash of firmware. Any thoughts on what's going on? Did the CPU have a brain fart? I'd hate to experience that again; but no OBD code revealed. Wire harness OK, battery cables good. Could I have overheated the CPU by turning engine "Off" ?

Any others out there see a similar "black-out and return" of their IP (instrument panel)?

Now I'm stumped.

[DriVer]

Quote:

Originally Posted by 62Morgan Any others out there see a similar "black-out and return" of their IP (instrument panel)?

It could be as simple as a corroded fuse leg or the fuse itself may not be properly socketed in the holder.

[62Morgan]

Thanks for the input. In looking at the fuse block...could not positively find the IP fuse. None are labeled as such [for the instrumentation]. Several are labeled for signal lights, etc.. [pulled several...but I'm shooting-in-the-dark.

My fuse chart has the same abbreviations as found on the fuse array. Helpful, but not specific enough. Under-the-hood fuse block had none that looked promising either.

Any workhorse knowledgeable have an idea where to spot the correct fuse w/o pulling them all?

[DriVer]

Quote:

Originally Posted by 62Morgan Any workhorse knowledgeable have an idea where to spot the correct fuse w/o pulling them all?

Replace the INST-BAT 5A fuse, #21 and OR check it.