Products > Test Equipment
Fluke 189 with leaking surface mount supercap (also Fluke 287, Fluke 289)
hansibull:
I just desoldered this 0.33F 5V Matsushita super cap from some almost-unused equipment. Can/Should I just whack this in, or should I get one that's almost identical to the original one. And how about the polarity, what is + and what is - on the PCB?
VK5RC:
A recent purchase of a 289 view from the inside, looks like they have redesigned the board a little and the Cap has been replaced by a battery??
Daruosha:
I just found this thread and wondered what is your PCB rev? I purchased two fluke 289 and production date of the first one is 2015 and the other one is 2016.
Anyone would suggest to break the warranty and tear them apart for further inspection?
evava:
Hello everyone,
I also got Fluke 289 from ebay lately.
And I have got two questions:
1. when changing batteries, it actually "holds" time (and date), by which I mean time (and date) "freezes" until new batteries are put in and then time runs again from the point where I removed batteries, but delay remains.
So, it "holds" time, but time is not running forward when batteries are not in the meter - is it OK?
Or is it supposed that time counter continues when batteries are removed?
(comsumption when meter is off is about 50uAmps, which is OK probably)
2. on Lo Ohm (50 Ohms) range, with shorted input posts, readings slowly decreases from about 60 ohms to the 0 Ohms during ten (fifteen) seconds and through 0 Ohms continues to the minus Ohms readings slowly and still very slowly increases minus Ohms readings, just like in that video
and maybe never stops completely (it is not my movie nor mine instrument but the same symptom).
If it is normal behaviour, then it seems to me that 50 Ohm range is not any good?
Or is my meter broken?
todd_fuller:
I recently acquired a Fluke 287/FVF and was quite curious if this was something I needed to be worried about. This was purchased from Amazon. Serial # 3567XXXX, 7/16 build date, rev 17 board.
As others show, cap is now replaced with a battery.
Off-topic: anyone know if the J5 header is is the UART to the IR? It would be interesting to add a BT module here.
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