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UNI-T UT61E Multimeter teardown photos.

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snowsnee:


Looks different on the lower half not seen this on other sites new I think. Edit :  Note ..........Posted on Jan. 2015 this site page 52 of this post, never saw it.

Edit: On the calibration VR1 VDC VR ( teeter totters ) might be Ok for others sometimes rocks inside like, looking to change to post saying stays right till you use for awhile. 2 resistors 1K and 500 ohm variable resistor testing it before an after installation replacement. 4 LEDS for both also ordering for exterior switch installation for back-light.

 

ewetho:
My new UT61E meter has that latest board layout with the 3 PTCs too.

ewetho:
If one were to wish to fill SG1, SG2, SG3, and SG4 with MOVs any suggestions as to what to get brand and rating?

snowsnee:

snowsnee:


Yes its better now- glad I waited here my 2 after adjustment. VR1 DC is really touchy going change to a 25 turn variable or resistors and the 50 or 500 ohms variable studying.
Edit best of a post here. Studying Schematic: UT61E.

Copied from post here: I see that you did Chinese external Vref mod and replace the VR1 2k trimpot with two resistors and an 50Ohm trimpot, as this mod improve the calibration and stability?
 Thanks ! David

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