lee321987
Member level 5
Hello.
I have a multimeter (Mastech 390-545) that has a hold button. The button operates mechanically.
The hold function does not work.
Once the hold button is pressed, the least significant number just slowly counts up (about 27 times per minute), and no connections/disconnections (once hold is pressed) have any effect on the displayed number.
It does the same thing on all functions (DCV, ACV, Farads), and in all ranges.
I'm prepared to open this thing up and try any good ideas.
Any ideas on what might cause this?
I have a multimeter (Mastech 390-545) that has a hold button. The button operates mechanically.
The hold function does not work.
Once the hold button is pressed, the least significant number just slowly counts up (about 27 times per minute), and no connections/disconnections (once hold is pressed) have any effect on the displayed number.
It does the same thing on all functions (DCV, ACV, Farads), and in all ranges.
I'm prepared to open this thing up and try any good ideas.
Any ideas on what might cause this?