Uni-T (Uni-Trend) UT101 repair manual / circuit diagram and contactor layout

Just a brief one, in case I do it again in the future.

I took my Uni-Trend UT101 meter apart to replace the 10A fuse. To do this you just remove three screws from the case and the board pops out. Stupidly I took it all apart before I realised I could get to the fuse, and the rotary selector fell apart along with the five contacts.

I contacted Uni-Trend, which despite being a Chinese company (and less likely to answer my English email I thought) very quickly forwarded my query and sent me the circuit diagram pdf, fantastic service and gave me more faith in Chinese products and their support!

Anyway I sat down and worked out the contacts needed to get the diode tester working. If you can’t see it in the picture then if 1 is the inside of the selector and 5 is the outside then

Left side of wheel – 5 and 3
Right side – 4, 2 and 1

UT101 circuit diagram.

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Posted Thursday, March 4th, 2010 under Tools and Design.

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