Products > Test Equipment
Fluke 28 II Battery life
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jerry_gao:
my 28ii-ex have the same issue, I am going to send it to fluke for repair.
zoiasso:
I have a fluke 28ii with this same problem, i contacted Fluke Brazil in 2018 (sent a video), and they admitted its a known problem but they won't solve my problem cause i bought it used and i dont have the "invoice" (my english is bad, i dont know if it is the correct word).



This is so stupid, it's clearly a factory problem, i have a fluke 87-v, the current consumption of the meter is about 20mA with full backlight on + buzzer on. The fluke 28 ii goes over 130mA with full backlight + buzzer  and shut down. Seems like i will need to fix it my self by replacing the buzzer or limiting it's current.
zoiasso:
Tried to replace the buzzer by a ps3 buzzer i had here, didn't work cause the ps3 need higher frequency to work. The frequency that the meter send to the buzzer is around 2.5khz.

So i placed a 100 ohms resistor to limit the current using the original buzzer in order to make the meter usable for now. It's working but soon i will look into some buzzer to replace it
admiralmaggie:
I was having the same problem and as it was suggested here, adding a resistor in series to the speaker fixes the issue. I cut off the "+" trace, scratched off solder mask and soldered a 120 resistor. I have attached a picture. The volume is lower but good enough for me. No more BATT prompt..

BeBuLamar:
I think all the 28 II are under warranty why not simply send it back for repair? In the case of the OP who already got it fixed did Fluke asked for proof of purchase like receipt or anything like that? I sent quite a few Fluke in for repair and they never asked me that so those who bought it on Ebay still can have Fluke repair it I think.
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