We have an SK135SR. It has a CPU problem. Screen has all sorts of error messages on and until it warms up the wipers go and in general just has some sort of fit! Once warmed up it is fine. I dont know whats caused this - it hasnt got wet, hasnt been jump started. We have been advised to replace the comuter, but machine has only done 3000hours and I am concerned that whatever made this problem happen could make it reoccur. I actually wonder if the computer can be rebooted? Anyone have any suggestions? BTW it is owner/operated and really looked after.
Can't really say for sure but if you have electrical faults apart from the computer, it may be a relay problem. Relays can be susceptible to heat and cold.
Perhaps check the voltage coming out of the alternator. How long since the alternator was overhauled?
Not sure how to reboot a ex computer, guess you disconnect the battery but if it has a back up battery in the computer?
We had a similar thing in a tractor gauge cluster fitted to a JD 8450, every know and then the cluster would go stupid and the way to get it back to normal was to slam the door once or twice, I think we eventually traced it back to a drop in voltage.
I would be questioning the willy nilly replacing of computers, they usually tend to work 100% or not at all. Unless the machine was designed for council work only, perhaps that's why it doesn't like to work when it is cold first thing in the morning.
However any more info you could supply might help, does it do it whenever it is cold or only first thing in the morning?