Now I'm there too. My Fluke 189 died during measurements! Exactly on switch over from mA to V (DC). Display just turned off and that was it.
I was doing some low voltage measurements of a Li-Ion charger. It's completely non-responsive now. Never before had problems with it.
Of course I opened the housing checked all the connections between batteries and pcb, mode selector and so on. I tried it also with lab power supply. I than made a detailed check of the pcb all the way from batteries over the switch mode power supply to processor ic, display ic, checked components... Voltages are there, display dead... Crystals also oscillate. The dedicated chips are a big problem because there is no info on them. I just hope that the processor didn't die...
I'm still suspecting the switch mode power supply. Voltage values are little strange. Can somebody please with a functioning 189 meter check the component marked in red and also the voltages on secondary caps (meter turned on) marked with yellow circles on the attached picture?
I'd need also a photo of the mode selector knob - because of the contacts orientation. Two of them jumped out on disassembly and I'm not 100% shure how they were assembled.
Did anyone experience similar problems with a FLUKE?
Thanks.