Electronics > Repair

FLUKE 289, shows message "warning leads connected incorrectly", I have detected

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EDER:
I have a FLUKE 289, shows message "warning leads connected incorrectly", I have detected that it is by the device O27, please I will appreciate if you can indicate which is the device code to replace it.
Thank you

mr.fabe:
Just wondering.. are you sure it's not DS2 that could be the issue?  Some folks with the same type of warning have traced their issue to the DS2 diode to fix their problem.

https://www.eevblog.com/forum/beginners/my-fluke-289-displays-_warning-leads-connected-incorrectly_-after-the-case-open/msg735239/#msg735239

EDER:
Thank you for your attention mr.fabe.
I commented, before exchanging the O27 and O24 devices on the screen showed a value in the scale of microamps, then when exchanging O24 to O27 the value is shown in the ampere / milliampere scale (as in the image), it is which makes me suppose that it is not the DS2 device that is damaged. How could I leave the doubt that value should measure me when testing the DS2 in reverse and direct?

floobydust:
See: https://www.eevblog.com/forum/repair/fluke-289-woes/msg1896530/#msg1896530

Q24 & Q27 = SFH 325 FA-3/4-Z - SIDELED® Silicon NPN Phototransistor in SMT SIDELED®-Package
DS01 = SMD LED (exact type unknown atm)

Osram SFH 325 FA-3 worked too.

"The Diode DS2 is an infrared {LED} diode. Replacement with an SMD 0805 sized IR diode with 940nm wavelength seems to work just fine. In my case a Harvatek HT-170IRAJ was used. Just be careful that the height of the led is not to great, otherwise the diffusor in the multimeter case will crush your led when the case is reassembled"
from https://www.eevblog.com/forum/reviews/fluke-287-input-alert-diode-type-replacement/

https://www.eevblog.com/forum/beginners/my-fluke-289-displays-_warning-leads-connected-incorrectly_-after-the-case-open/

edit: added a thread

EDER:
Thank you for your floobydust attention.
It will make the purchase of the devices and then, I will be publishing the results of the repair.
Best regards.

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