Products > Test Equipment
Bricked Fluke 177
tooki:
--- Quote from: andyB2022 on July 15, 2022, 09:58:29 am ---So we can consider the meter dead right? Replacing the FPGA from another meter would cost as much as a new one...
--- End quote ---
ASIC, not FPGA. An FPGA is a very different type of device.
andyB2022:
Thanks for pointing out, my bad :-+
andyB2022:
--- Quote from: robert.rozee on July 15, 2022, 02:30:04 pm ---
report back the voltages returned, as well as what is on the F177's LCD.
--- End quote ---
With input leads shorted (V and COM) we have:
Pin 2 4.962V
Pin 3 2.5V
Pin 5 2.5V
Pin 6 2.5V
All measurements referenced to pin 14,15,16 of the ADC.
andyB2022:
Small update, I've tried to measure all possible things on the board and mark them on a photo. All measurements in white font are referenced to the GND marked with the Bright Green circle in the middle. V and COM on the multimeter input jack were shorted during this measurement as one of you guys suggested above.
Measurements with the orange line pointing at the values with white background and orange text are referenced to bright green GND too.
On AD737 I took the two -Vs +Vs measurements against it's 8'th pin which should be GND according to the datasheet. As you can see here I've noticed something really strange in +Vs side, a fluctuation between 2.459 - 4.95V.
After other measurements around the board I came back to this AD737 and the fluctuation was gone.... steady 2.459V
Hope the pic will help you guys better understand...
alonsojar:
Hello, my 175 (I assume is the same meter except the lack of led light) in DC position shows 11M Ohms between V and Com measured with a 87v.
Good luck !!
J. Alonso
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