Need some help trying to figure this one out. I'll be upfront in saying I don't understand electronics.
I have no power - lights don't light up - at the key. I replaced the battery just before the mower stopped. At first figured it may be the seat switch so I jumped that (wire to switch). Still nothing at the key. Next figured it may be the ignition module - swapped that out. Still no lights. Replaced the two 15 amp fuses on the board as well. Still no power at the key.
OK I am going to be pain, sorry but it is important to get things strait.
There was no John Deere LT 176
So can you start by findng out what mower you actually have
If the decals and name plate have gone then here is a list of the John Deeres to you to choose from tractordata.com/lawn-tractors/tractor-brands/johndeere/johndeere-lawn-tractors.html
Take Joes offer.
The JD tech manual is written for people who do not know which end of a screwdriver to use.
If you have any problems come back we are very willing to help.
Joe has just offered you a $ 100 gift.