that's something I know not how to do.
I have a simple multimeter with a 8v inside and literally no knowledge of how to use it.
Later on tonight if I'm feeling brave I'll get in there again and see if I can't get the numbers off the things... and if they're not dead due to heat damage when the actual culprit is found, if this turns out not to be the case, I'm giving them a fresh coating of thermal compound.