What does N.I.U mean?

Thread Starter

drphil111

Joined Nov 10, 2017
2
I am looking at a schematic on a BOSS ME-50 guitar effects box board. It is not powering up with wall wart or battery pack. 9 volts.
It has a capacitor SMD C131 as a filter before the coil before the power on switch. (See schematic). I looks like it has come off the board. The schematic has the C131 and N.I.U. Do not know what NIU means.
 

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Uilnaydar

Joined Jan 30, 2008
118
Might never have been installed on the board. NIU maybe is a not installed indicator. Check the other NIU parts, see if they are missing.
 

Thread Starter

drphil111

Joined Nov 10, 2017
2
Yep. DUH! The items marked with NIU are not installed on the board. Must of been deleted in production from engineering.

Yes when I looked it up on the internet i did get Northern Illinois University - higher learning wasn't any help
 
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