My T190 is at 2400 hours and I know at some point all those computerized control systems are going to be a problem. So on Friday I had the bucket full of split ash for the second time to go to the basement, crawled in the cab and pushed the power button. Nothing but I thought I heard a fuse or relay blow. It's happened in the past so I get to the fuses and check em out. All good, so I get the multi meter and the battery has 12.4 volts. Checked continuity on 100 amp main fuse, and the 25 amp fuse to the switch. All good. By this time I'm starting to suspect the control system. It's getting to the end of the day, so I just go back to splitting and figure I'll read the manual over a Premium and continue trouble shooting in the morning. Didn't find anything of help in the manual since it starts with error codes stored in memory that you can't get to without power. The next morning I go out and again the battery has 12.4 volts. I check the voltage at the 25 amp fuse and I'm only getting 10.8, so I go back to the 100 amp fuse and same thing 10.8 Checked the battery at the cable clamps and get 10.8 Checked pos post to neg clamp 12.4 Checked neg post to pos clamp 10.8 The pos clamp is tight at first, but after pushing on it a little it moves and lifts off. The bolt was rusted bad and the clamp and post had a small amount corrosion. Broke the bolt trying to get it loose and replaced it with a new one, cleaned the post and clamp and applied dielectric grease. Tightened the clamp and now I have 12.4 amps at the fuse. Lesson learned again. I got off track troubleshooting when I was thinking the problem was a lot more complicated than it really was. Reminds me of a guy named Occam " the simplest explanation is usually the right one"
Been there done that. It was one of the very first lessons I was taught in beginning auto mechanics & I sometimes still get bitten in the butt by it. Start at the beginning & verify system operation/failure at every step. I get ahead of myself & chase rabbits, it just happens. Glad it was a simple fix.
With all the current that goes through those cables, it really doesn't take much looseness / corrosion / resistance to make things not work right. All's well that ends well.
Pretty easy to get off on the wrong rabbit trail when you do this stuff everyday and see common failures that your brain just immediately gravitates toward..."oh, this will be an easy fix"
