Went ahead and did all the checks. Batteries are new, wiggling doesn’t fix it, and fuse is good, but no output when switching the ranges. I do get a pulse when pressing the range button but no test signal. I noticed on the processor that 2 leads were bridged together. I removed this bridge and now I can press the range button and after it switches out of the nF range, it gives me a good screen and measures correct values, but it takes a very very long time.