Over head display out... fuse?

[flagmanruss]

The overhead was working last time I used the truck. Today it's out. Totallty dark & dead. Does not respond to it's buttons. The interior lights on the overhead & flashing alarm light still works. I pulled the fuses in the driver's side of the dash/door & all 'appear' perfect. I've been reading on line, trying to figure out the wiring. What info I have (check me... you never can be sure) is #11 fuse (10A) is supposed to be the overhead console. I pulled the fuse & inspected it visually. Now that I (think I) know which fuse, I'll check the fuse with a meter & the socket for power... tomorrow in the daylight. Any other suggestions? Thanks,Russ

[flagmanruss]

I'm sure there have been discussions here about working on the overhead trip computer / console. I'm doing something wrong when I try to search for them.I have power on #11 fuse socket & the fuse is good, in the driver's side dash end. I'm wondering if the clearance lights have leaked on me. Wife used the truck last... says the overhead WAS working.

[D-Roc]

Put your meter to the wires going into the card...(control center)

I'm not sure how many vdc you should have there, but you should read something...the trace back from there.

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Or even use a test light...I'm pretty sure it won't be more than five volts in the card, and the bulb may be dim, but it will eliminate any questions on finding a ground. That thing is on the roof interior...not sure if it will be circuit voltage on input or not

Or it might even be a bad ground?

It's probably something stupid

[Mopar1973Man]

I would double check the fuses with a ohm meter to be sure the fuse is not cracked. As for the ground most of that stuff is grounded in the driver side kick panel.

[flagmanruss]

I did pull the #11 fuse & checked with an ohm meter. 0 ohms. Lower pin in socket has 13.8 volts with engine running... I used the edge oth e dash frame for the voltage ground. I guess the next thing is to pull the overhead console. I'm not finding any screws. THere are a couple of snap in tabs in the Garage door comparement. I think squeezing them & unhooking the front will drop it enough to unplug the various harnesses.I checked on ebay... not seeing any such units for sale right now. I don't know if it's totally fried. No idea what I'll find. I know from my experience in the Marine Electronics company shop that circuit boards can be cleaned gently with rubbing alcohol & Q tips. I won't know until I get it out. The power to the dome lights (which often use a door switch to ground) is likely separate from the computer.

[Mopar1973Man]

The overhead console can be removed by squeezing the 2 tabs pulling down slightly then sliding either forward or backward can't remember. Just be nice to overhead its plastic and getting rather old.

[flagmanruss]

I've gotten the 2 catch tabs to release in the garage door compartment. There appears to be 2 hook tabs in the glasses compartment (rear) and appears it must slide to the rear... But danged if I can budge it. I tried pushing plastic wedges to 1/4" height under the front console sides but nothing is moving. Of course every time you tug on it the tabs lock in again. I was thinking of trying clothes pins on the tabs or maybe a thin blade or a narrow feeler guage or shim stock (to keep it from relatching) & maybe climb into the back seat to pull!! Or maybe a rubber mallot if I can find some place to bump it.

[flagmanruss]

I've got wedges between the overhead & the headliner. I don't see how the overheadC can move back to unhood without dropping down more in front to clear the plastic latches. I guess I'm going to try to pry it down more... I don't know how much pressure the plastic can take.