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my john deere model790 has brand new battery but has no power…

Customer Question
my john deere model790 has...
my john deere model790 has brand new battery but has no power to starter nor does any light on dash light up
Submitted: 8 years ago.Category: Agriculture and Farm Equipment
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Answered in 18 minutes by:
8/20/2014
Mechanic: spankyjr1, Journeyman replied 8 years ago
spankyjr1
spankyjr1, Journeyman
Category: Agriculture and Farm Equipment
Satisfied Customers: 2,873
Experience: I worked on all types semis,forklifts,farm,fire,ect.
Verified
Hi, my name is ***** *****'re having trouble today.
I will do my best to assist you in resolving your issue.

It sounds like you have a blown power fuse could be from changing battery.

Sometimes these fuses are under or behind battery or inside dash by key switch.

Follow wires coming off battery and key switch to find blown fuse.

Let me know if you need more assistance,, I'm happy to assist.

Thanks
spanky
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Customer reply replied 8 years ago

it died before i changed battery

Mechanic: spankyjr1, Journeyman replied 8 years ago
I just used that as a example of how it could have blown a fuse.
There are hundreds of reasons for a blown fuse.
Even a weak fuse can go out at any time.

Right now you have no power,,, not even to the dash.
So if you have no power to ignition switch,, it will never turn over or start.

This is the first step in troubleshooting your issue.
Once you find fuse,, (whether it's blown or not) will tell us which direction to precede.

If fuse is okay go to ignition switch and check to see if you have power with ignition off.
If you have power turn on and see if another wire gets power,,then turn to start and see if another wire gets power.
You can use a test light or a volt meter to check for power.
You should have battery voltage at ignition switch.

We have to do one thing at a time until problem is resolved.

Let me know results and we can continue.
Thanks
spanky
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