[Neilbotha]

Hi all, I have a 2006 trx250tm fourtrax with digital display. The neutral, reverse and oil temp light above the display works fine. The display is dead when I turn the ignition or or start the bike. However, I have been able to make it come i\on in 2 ways: Firstly by disconnecting the plug right under the display (9 wires). When I slowly pushes it back in it reaches a point where she comes on. Problem is that while holding it there, if I turn ignition off and back on again it doesn't come back on again. Secondly, if I remove the main 15A fuse near battery while ignition is on and push it back in, it comes on. Same deal, turn ignition key off and back on and no joy! Any thoughts? I have so far sprayed wd40 on the 9 wire plug. Not sure if that was a good or a bad thing? :smile

 

[b52bombardier1]

Hello,

Broken wires at the display wiring bundle or a broken trace on the display printed circuit board. Maybe a pushed pin on the male side of the display connector.

Rick

 

[retro]

^^^^ What b52bombardier1 said ^^^^
It isn't initializing (aka booting) cleanly and dropping out. If you have good soldering equipment and a bit of experience with it you can reflow the PCB and plug connections and make any repairs you find necessary. If you see any electrolytic capacitors inside the display assembly its wise to take a leg out of circuit and test the cap. They are cheap junk nowadays, so I always just replace every one i find with high quality caps. Your call...

 

[Neilbotha]

So here is what I've found so far. Removed dash/ display and wiring connector. Turns out the blue/black and green wires have an intermittent short between them. I checked it all at the connection end and cant find any issues along the foot or so of wiring either. As far as the circuit board goes, all the capacitors seems ok when testing capacitance setting on multimeter. I am not game enough to undo the solder on the 2 black wiring connectors on the board self. It has me buggered for the moment!