| Products > Test Equipment |
| Fluke 177 failed and need support to repair |
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| Chinhdc:
I found that model 177 has a 6-leads SOT-23 with name LPTZ, follow you guide, i check the pin 6 to COM, it's on a rail; then measure the impendance of pin1 (GND) - Pin4 (Vin) is high ~ 5MOhm; pin 1 - Pin 6 (Vout) ~ 30KOhm (infact the impendance is not stable at a value, it varies). So, it's the sign of defect the LPTZ component? Looking forwards your early tip to bring it back normally. |
| Chinhdc:
and, i measure in Voltage the LPTZ component (Battery>9VDC): - Pin1-Pin4: 4.92V -Pin1-Pin6:2,475V So, is any guy have a tip for me about this? |
| bdunham7:
--- Quote from: Chinhdc on December 30, 2021, 03:11:18 pm ---and, i measure in Voltage the LPTZ component (Battery>9VDC): - Pin1-Pin4: 4.92V -Pin1-Pin6:2,475V So, is any guy have a tip for me about this? --- End quote --- It looks like the power supplies are good. The IC marked 'PCY' right below the LPTZ is your 5.0V regulator, I don't see the 3.3V regulator if there even is one. Look elsewhere for a similar sized IC with the markings 'AQI'. If your power supplies are good, I don't have any other hot tips for troubleshooting this. |
| andyB2022:
Hi, I have the same issue. @Chinhdc did you manage to solve the issue? |
| Chinhdc:
not yet, the meter is still in the store :(( |
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