What do you think about blue ring tester ?

[brunofunchas]

Blue ring tester

Hello,

Do you have this tool?
http://www.electronicrepairguide.com/blue-ring-tester.html

Is it useful? Should we have it on our workshop?

Regards,
Bruno

 

[sec]

https://www.jestineyong.com/?p=1295

Not worth it if you know what you are doing.
By the way, I use a Quadtech 1910 to test my components. The Quadtech 1910 does not tell me if my coil is good or bad but it is deadly precise !! I know where I am going when I do some repairing so no need for me to have 1 LED or 7 LED to tell me if I should change my component.

 

[dvmman]

I have just got mine from jestine and it is very useful indeed..It will tell you if the transformer is shorted or not..sorry don't agree with the poster who says not to bother.