| Electronics > Repair |
| fluke 289 problem |
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| anwfeb:
Hello, i have a problem on a fluke 289 when it is turned on without a probe it cannot state that it is without anything, for example on VDC it displays 0.0758VDC, on mV it displays 91.52mVDC, on ohms it displays 54.1MΩ, on the capacitor menu it displays 28.9nF. is the problem with the internal battery? and if i want to replace it, what part number suits it? and if it is not an internal battery problem maybe you can give me any input to detect this problem, thanks |
| Ugur:
Check your varistors. |
| anwfeb:
--- Quote from: Ugur on November 04, 2024, 08:53:19 am ---Check your varistors. --- End quote --- the physical is fine, but for the RT1 i see like there are scratches, does that affect it? |
| Ugur:
Have you measured your varistors? You should measure them as open circuit "OL" on the ohm scale. |
| anwfeb:
--- Quote from: Ugur on November 04, 2024, 12:37:27 pm ---Have you measured your varistors? You should measure them as open circuit "OL" on the ohm scale. --- End quote --- yes, one showed a value of 10 Mohms, but the remaining two showed OL, then i removed the problematic varistor i left it empty, and then i tested, but what was displayed was still the same, the multimeter could not display Zero when not in use. edit: even i removed all three varistors and left them blank, when tested, it's still the same, i haven't gotten a zero value on the display screen. |
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