Originally Posted by KTMSER
I originally saw the different part number for the SE VRR (62511034100) vs the VRRs for the rest of the LC8 fleet (60011034100) and thought it was just the longer cable that was different. Now I'm thinking it is a totally diff VRR altogether. Maybe even a diff vendor. Could be a bad bunch of VRRs and/or the extra heat of its location on the SER (yours being in AZ just exacerbates the problem) is bringing that out. I wonder if it could be relocated to a cooler location or shielded somehow. Preferably mounted to a large piece of metal using heatsink paste.
BTW, I've had good results using VRR's from this place (he has a rep for making sturdy stuff):
They aren't specific for KTMs, but I see a couple of units that should work.