what a coincidence. Got my new U1272A yesterday. Got it from Datatec here in Germany. They have a trade in sale, 25% discount on any 'Orange Agilent' if you send in any old Fluke. So I guess Agilent is really trying to get a better market share against Fluke.
So, I unpacked my new meter, played around a little, next thing, checked Dave's blog - it is an everday routine - and bang, there was his devastating verdict on my new U1272A !!!
First I thought, maybe Dave left one of his big screwdrivers he always uses to poke around on delicate circuit boards, in the meter. But now my U1272 acted the same way - and I haven't even opened it up. Today it did not stop beeping in the Ohms mode with no probes atached. I had to remove the batteries, now it's working again! - So Dave, you did nothing wrong, no screwdriver left in there
Did some measurements today, the resistor in the low-Z mode must be a PTC, I measured 250Vac, it went from 1,4Kohm to 15Kohm after half a minute.
I really like the orange display illumination, but current goes up from 4mA in Vdc or Ohms, 9mA in Vac, to 70mA with illumination.
I do a lot of repair on old audio amplifiers/tuners, so one reason I bought the Agilent, was that 'auto diode' mode, checking transistors in circuit, without having to reverse the leads - this works as expected.
I'm looking forward for Dave's full teardown, but I guess I still like my new agilent!