Fluke 28 II Battery life

[Kirkhaan]

I have a Fluke 28-II Ex from 2017 with the same issue.
When I remove the AAA holder from the battery compartment and place AA batteries it is solved.

No modification is needed. Behind the AAA assembly there seems to be a kind of extruded round plastic shape to hold AA batteries as well.
Perhaps the 3m drop test cannot pass anymore now, since the AA batteries are not so strongly hold as the AAA batteries in the "reducer" assembly.

[kronichiwawa]

Hi there!
the third day it seems a solution was found
comparing revision 14 and 17 boards and also checking some voltages, or rather what comes to the beeper, I found that on the older revision, 5.5 volts come to the beeper circuit.
By simple logical reasoning, I came to the conclusion that the error in the circuit was precisely in the incorrect connection of the beeper amplifier power supply, so by cutting the tremor and throwing the power supply to the main 3.3 volts, we will get a factory solution to the problem.
However, this is not enough, and the multimeter still eats 100 mA in maximum mode, before the correction it ate 150 mA. Thus, it is additionally necessary to change the R130 to something about a dozen ohms, 43 ohms helped me, the consumption became 70 mA

in the appendix, a photo of the new revision cut from the video since I do not have access to the new one, there you can see the change in the beeper power supply