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UNI-T UT61E Multimeter teardown photos.

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ansic:
Transient/ESD protection resistor and MOV's  made a really easy DIY robustness improvement.
The MOV's i picked: aliexpress.com/item/1/32791292139.html not sure if its perfect match anyone has an idea?
datasheet 07D681K http://www.mouser.com/ds/2/54/OV07D-777763.pdf

joeqsmith:

--- Quote from: ansic on May 25, 2017, 07:47:10 pm ---Transient/ESD protection resistor and MOV's  made a really easy DIY robustness improvement.
The MOV's i picked: aliexpress.com/item/1/32791292139.html not sure if its perfect match anyone has an idea?
datasheet 07D681K http://www.mouser.com/ds/2/54/OV07D-777763.pdf

--- End quote ---

I will ask you the same thing I asked people who were suggesting populating the MOVs, how do you know you improved it?   Do you just feel it is improved or did you run some sort of tests?   

kcbrown:

--- Quote from: joeqsmith on May 25, 2017, 10:25:40 pm ---I will ask you the same thing I asked people who were suggesting populating the MOVs, how do you know you improved it?   Do you just feel it is improved or did you run some sort of tests?

--- End quote ---

Perhaps a better question is: did it make it worse?

It'd probably be rather dumb to presume that it improved anything, so I wouldn't use it to measure mains voltages or anything of that sort, but if it's down to either living with the meter as it is or putting in those components, which is the better choice?

 :-//

P90:

--- Quote from: joeqsmith on May 25, 2017, 10:25:40 pm ---
--- Quote from: ansic on May 25, 2017, 07:47:10 pm ---Transient/ESD protection resistor and MOV's  made a really easy DIY robustness improvement.
The MOV's i picked: aliexpress.com/item/1/32791292139.html not sure if its perfect match anyone has an idea?
datasheet 07D681K http://www.mouser.com/ds/2/54/OV07D-777763.pdf

--- End quote ---

I will ask you the same thing I asked people who were suggesting populating the MOVs, how do you know you improved it?   Do you just feel it is improved or did you run some sort of tests?

--- End quote ---



It gives one the same sence of security as wraring a aluminium foil hat...

joeqsmith:

--- Quote from: kcbrown on May 26, 2017, 01:59:44 am ---
--- Quote from: joeqsmith on May 25, 2017, 10:25:40 pm ---I will ask you the same thing I asked people who were suggesting populating the MOVs, how do you know you improved it?   Do you just feel it is improved or did you run some sort of tests?

--- End quote ---

Perhaps a better question is: did it make it worse?

It'd probably be rather dumb to presume that it improved anything, so I wouldn't use it to measure mains voltages or anything of that sort, but if it's down to either living with the meter as it is or putting in those components, which is the better choice?

 :-//

--- End quote ---

I would say ANY time someone would modify a handheld meter it would make it worse!  It's just being stupid!  If you are a child or novice, even more so.  Adult's I would expect would know better.  The videos I make showing the shortcomings of the UT61E are for educational purposes only. If the meter were to end up in someone else's hands, it is CLEARLY marked.   

I've stated my views on this many times but seems it's not clear to you.  If it's down to either living with the meter as it is or putting in those components, which is the better choice?  Live with it!  Next time buy a tool that meets your needs! 

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