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B7800 Instrument panel problems

jimcope1 Join Date: Apr 2007 Posts: 2 San Antonio, TX`

2007-04-23          141447

All the readout instruments are not working. The tractor runs fine, but no rpm, oil, temp, hrs, anything. The warning flasher lights work, no headlights. The dealer told me the entire circuit for the dash instruments needed to be replaced, but I am not finding such a part. Any suggestions.

Thanks,

jimcope1

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B7800 Instrument panel problems

earthwrks Join Date: Dec 2003 Posts: 3853 Home Office in Flat Rock, Michigan   Pics

2007-04-23          141451

I'll bet the dealer would love to sell you a new IP board.

There's been problems like this on the Board and it was something stupid like a bad ground, bad fuse, dirty fuse holder (like mine was), a poorly crimped terminal from the factory.

The other thing it may be is a cracked circuit board (if it uses that type of system). If it has one remove it and have someone who is good with a Volt/Ohm Meter (VOM) and find the possible break in the circuit. I had a new laser printer that went out on me. The factory said oit was unrepairable. A friend fixes PC's and stuff and within 20 minutes he diagnosed and soldered the circuit. Cost: $20 ....

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B7800 Instrument panel problems

kwschumm Join Date: Feb 2003 Posts: 5764 NW Oregon   Pics

2007-04-23          141459

Maybe the voltage regulator on the board is bad. The dealer wouldn't bother to troubleshoot to that level, they just change parts. I'd bet if the board is the problem an electronics guy could find and fix it. ....

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B7800 Instrument panel problems

Art White Join Date: Jan 2000 Posts: 6898 Waterville New York   Pics

2007-04-23          141460



I don't count on anything here except a shortage of power! ....

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B7800 Instrument panel problems

jimcope1 Join Date: Apr 2007 Posts: 2 San Antonio, TX`

2007-04-24          141487

Thanks to all. I am somewhat of an electronics guy, somewhat retired, and I will take a look at the circuit with my dusty voltmeter. I suppose I knew this was coming. I had been looking at the downloaded parts list and found that part not very clear as to what was inside the dash. Pearl diving it seems next. Will report what i find.

Thanks again.
....

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