soldering issue

[daxma]

I bought a new hglrc all in one pdp and esc board. As i went to solder on the xt-30 i noticed that the solder with not stay on the pad. It wont stick. seems like there an oil or something that is hindering it. any advice?

 

[kilroy07]

I have had issues with particular brands of connectors. I usually end up roughing up the surface with a small needle file (fine sandpaper would work as well.) That and some extra flux usually clears it up.

 

[daxma]

I have had issues with particular brands of connectors. I usually end up roughing up the surface with a small needle file (fine sandpaper would work as well.) That and some extra flux usually clears it up.

ill give that a try, tanks a million brother!

 

[sprzout]

Definitely use some flux. It's probably needing to be cleaned, and that'll help it bond.

 

[daxma]

Definitely use some flux. It's probably needing to be cleaned, and that'll help it bond.

Definitely use some flux. It's probably needing to be cleaned, and that'll help it bond.

so what could this, oily substance be? it seems to solidify after it cools.

 

[FDS]

It could be left over flux or impurities from manufacturing. You can use IPA on a swab to clean the contact, as noted a separate flux will help, as will gentle abrasion.

 

[Bricks]

Along with everyone elses coments are you getting it hot enough? For battery connectors I will use my Weller 240-350 watt soldering gun.