Electronics > Repair

Help with Fluke 175 repair

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MC2Short:
I found a picture I had of those top two sot23's, but I can't figure out what they are.. The top one especially is hard to read to me. I also found a pretty good picture of the bottom four. Looks like 6B> or something along those lines. I think the 6B> might possibly be a BC817-25, but I'm not sure.
After doing a lot of reading I think the CXQPI is a IRLML6302
And  I think the M1L one is a NSVMMBT6429LT1G but if anyone else has a opinion on what it might be please let me know

Ugur:
This is true.

bdunham7:

--- Quote from: MC2Short on November 26, 2024, 06:35:15 pm ---I found a picture I had of those top two sot23's, but I can't figure out what they are.. The top one especially is hard to read to me. I also found a pretty good picture of the bottom four. Looks like 6B> or something along those lines. I think the 6B> might possibly be a BC817-25, but I'm not sure.
After doing a lot of reading I think the CXQPI is a IRLML6302
And  I think the M1L one is a NSVMMBT6429LT1G but if anyone else has a opinion on what it might be please let me know

--- End quote ---

Now that you have them off, can you verify that pin 1 and 2 (base and collector) pads on the board are connected where the "6B" components go?  From another picture it looks as if pin1 is NC on these, but if there is a trace under the body of the device then everything makes sense and BC817-25 will work just fine as will many other NPN transistors. 

You've done some pretty good part number research.  I think your conclusion on the M1L is correct.  Your ID of the CXQPI is interesting and a plausible reason for the meter to stop functioning.  What did you read and how did you come to find the IRLM6302 number? 

MC2Short:
I apparently got them right because I ordered those sot23s and now my fluke 175 works perfectly again. I'm amazed really.

MC2Short:
I used this for identification for the CX sot23

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