i've been browsing this site since I got my first jeep in October 2008 and I gotta say this site rocks. first post to btw
I was wondering if anyone has heard of or had this same problem.
My ZJ is the 4.0 4X4 Limited and the overhead console won't work, doesn't come on, nothing. When i hit the 2 buttons at the same time every character in the LCD lights up and stays lit till i turn off the Jeep. on occasion it will flicker on by itself and will work for the duration of the trip, all functions working. I've checked fuses, did what research i could online, and inspected all the wiring that I could to no avail. For being a 1993 it is in great condition and i see no reason why it should not be working all the time.
Yup, take down the center console and you'll see it. It's a little circuit board with (I think) two flat connectors and it's held in by 4 screws. Unplug it, take out the four screws reverse procedure to put the new one in.
It really is as easy as that. A bunch of screws and two plugs.
You can FIX your own overhead Jeep XJ Digital Thermometer / Compass. I had this same problem for three years. I pulled 3 of these out of junk yards and they all had similar problem, but FINALLY, I found the FIX.
The circuit boards have 6 small caps which are "electrolitic". These are known to fail after a few years and are easy to replace.
I've found the answer myself. "Replace the 6 electrolitic caps on the circuit board. Seems some are rated at 105 deg F and parked in the sun, this roof mount probably gets much hotter than that. In any case, they fail and leak on the board. there is one 4.7uF/50V, a 100uf/6.3V, a 220uf/16V and three 100uF/35V. NOTICE the grey bar on each cap marks the (-) lead.
I found the three 100uF had leaked on all three of my circuit boards (I've been collecting these from Jeeps trying to find a good one). Its possible those were the only bad ones, but while I had my soldering gun out, I replaced all.
Now, all three of my units work perfectly.
I ordered my replacements from Digikey.com and got enough to fix all three for $7.
If you don't feel talented with a soldering gun, buy the parts and take it to an electronic repair shop.
Or, you can ship your module to me, pay the return shipping and I'll replace the 6 caps for free. Takes me about 30 min to remove the old ones, clean the boards with Cemtool B-12 and solder on the new caps.
One more NOTE; check the replacement caps for physical dimensions. both leads must come out the same end. The ones I got for the 100/6.3uf were 1/4" taller than the original so I had to make a small modification on the plastic case to let the cap stick out the top a little.
I just see your post from 04-12-2009, about Overhead Console problem - 93 ZJ, and is just the problem i have, and the solution. I try to go to: http://www.billjohnson.net/automotiv...ctrolitics.JPG here is how the caps are laid out on the card. http://www.billjohnson.net/automotiv...ole_Wiring.doc for more info but is no more on line that place.
I will realy apreciate if you can send my a pic, draw or wgare ever to see those parts you talk about in that very interesting post. He in Mexico i may not have tha look to fine tha replece part for my baby 93zj, so i will like to give it a try whit your help if this is not too much problem for you.
Thank you in advance.
Thank you SO much, Billbobagns! I just mounted the circuit board after soldering help from a friend.
ALL functions work as they're supposed to Bought the components from eBay. On my 93 ZJ there are only 3 different types; 3× 100uf, 1×33uf and 1×10uf. Bough 10 of each at a total cost: $10
Your fix helped me out, big time!
Dear billbobagns. i have the same problem with my overhead console. I would like to send you mine so you can solder those caps. please send me a picture of the caps so i can make i know what your talking about. thank you so much hope to here from you. sal