@AlfBaz
Using your nice pictures, as a guide. I have now changed my mains filter
Now i finally had a chance to use my new Bosch Drill-stand (notice the laser cross)
The hardest part was actually to get the soldered earth plug off the mains filter.
But as i wrote further up .... I could only get some other Schaffner mains filters , with such short notice.
And guess what happened after approx 35 min of power-on with the new filter ....
Mini "boom" , and that "smell" of burned electronics .....
The new filter had leaked a tiny bit of "goo" , but only outside the meter ...
A bit on the mains wire , a black spot on the wall , and a tiny bit on the alu back-frame & on the plastic top.
Schaffner products sucks big time
I opened it up , and it was totally clean inside , so i cleaned it up and closed it again.
But i don't trust it , and don't know if i should be worried about fire or the likes.
Even though i use it right now with the new mains filter , i don't dare to let it be powered on unattended.
So i have ordered some new "NON Schaffner" filters , and will do my best to warn against those Schaffner products when using 230v mains.
I measured my battery and it was at 3.479 volts , so i won't change it for now.
I am getting good at opening the meter , and will have to do it again in a few days when the new mains filters arrives.
So guyzz keep away from Schaffner products , even the NOS filters explode.
So it wasn't about them getting 120v first and then 230v , they can "implode" even when they have only seen 230v.
Ohh i checkked my A11R644 & A11R645 - pict 0037 -
They have been adapted to the new 3.4v battery levels (it's in a service note in the manual)
The Keithley shows 2v on my "Not yet restored & calibrated" EDC E100C voltage ref.
Btw: I would have expected another digit on the 10v (Geller reference) measurement on the 3457A (NPLC 100) , but it seems drop a digit after 3+v .... Any hints would be welcome.
Strange ... The Keithley doesn't , and have 5 digits after the decimal point when measuring 10v.
/Bingo