If you’d like to send me just the internal circuit card, I can put it through its paces and tell you what it needs
There’s no cost for diagnosis other than postage, which would be $10.40 for just a circuit
-AKATV
Found you through Google lol. This is what I'm working with, I picked up a trx500fa2 about a month ago. I have no idea about the condition of the screen as it didn't work when I got it only the back light i had to wet sand and clean the cover just so i could see that the display didn't work lol. This has been a project for my kids it felt only right as I grewup on a ATC they should have something to remember themselves. I took the board out a week ago to give a visual inspection and besides a small spot of rust on a I believe a capacitor I think it's not damaged but alot of unknowns as this is a new to me atv.
Screen looks great
Backlight works
Neutral and reverse light works but the oil light doesn't.
I was gonna replace the cover if it worked but it didn't so I didn't want to waste the money if I was gonna but a whole replacement then realized there are none lol