Help with polarity

[spaceludwig]

I apologize in advance if the answer is supposed to be obvious but I have around 130 of these to replace and do no want to make mistakes with cap polarity.  Most polarized caps have very obvious marking however these ones leave me uncertain.

So, is THIS

the negative side? Or is it this

side? Someone suggested they were non-polarized but I have my doubts.

Thanks for your help.

 

[Mbira]

I'd also guess they are non-polarized.  In any case, if you are replacing them with polarized, then you just need to know which leg is receiving positive voltage...

 

[PRR]

"NP" is Non-Polar.

Yamaha paid the penny more for a reason. You need to get NP caps.

 

[spaceludwig]

Thanks you both very much for the replies. I already stocked up on the wrong parts but having to go through the re-capping would have been seriously discouraging and a waste.

 

[dagoose]

The longest solder wire is the +, short is -.
But to me it looks like bi-polar indeed.

 

[spaceludwig]

Indeed it is.