BX2670 Tachometer not working

[Stonne]

New member, first post.
Hello folks. I have a problem with my instrument panel. I noticed moisture behind the panel glass then shortly after the instruments went blank. I found a 15A fuse blown which brought back all but the tachometer. Can anyone point me in the right direction as to where to look next.

 

[GreensvilleJay]

you might , and that's a big MIGHT, get lucky, if you remove the panel, bring indoors, gently blow warm air at it for a few hours, let let cool down, the look at it very,very carefully for obvious blown parts, arcs, etc. if nothing seems 'bad', reinstall and see if it powers up properly. If it still blows the fuse...sorry...you'll need to order a new panel as I doubt Kubota actually will do 'board level repairs'.
other will know for sure. There may be some 'component' in the tach circuit that went 'poof'. without seeing it in person ,or real good pix(both sides) , hard to say...might even be at the connector.

 

[Roadworthy]

If your fuse is still holding, congratulations. Some tachometers drive from a mechanical spinning cable from the engine. Newer ones count pulses and are all electronic. Your next step is probably to determine which type you have. The cable sometimes binds or breaks in the mechanical type. If yours is fully electronic you need to determine the source of the feed and troubleshoot from there.

 

[GreensvilleJay]

It's electronic... just downloaded the WSM from kubbooks.......
gets pulse signal from the alternator so possibly there's no signal from it via pin4 of the panel connector...
could be PCB damage around the tachometer...
could be some fried RAM in the 'CPU'...
do the taillights and turn signals work on the panel ??
does the oil pressure LED work as it should ??

 

[Stonne]

you might , and that's a big MIGHT, get lucky, if you remove the panel, bring indoors, gently blow warm air at it for a few hours, let let cool down, the look at it very,very carefully for obvious blown parts, arcs, etc. if nothing seems 'bad', reinstall and see if it powers up properly. If it still blows the fuse...sorry...you'll need to order a new panel as I doubt Kubota actually will do 'board level repairs'.
other will know for sure. There may be some 'component' in the tach circuit that went 'poof'. without seeing it in person ,or real good pix(both sides) , hard to say...might even be at the connector.

Thank you for the reply. Does the steering wheel have to be pulled to get the panel out?

 

[GreensvilleJay]

I don't know.. goto www.kubotabooks.com and download the manual. it may say in there how, though most manuals are kinda sketchy about some things ( like HOW to get knobs off levers on the BX23S.....)

I used google 'bx2670 wsm', 3rd hit is the manual in PDF, from kubotabooks...
I thought there was access through this website..somehow...

in 'servicing' they show steering wheel off.probably a LOT easier to access the panel.
getting the wheel off..try the 'steering section' ??