What the heck is this schematic symbol

[Robert]

This was it. after I reflowed that pad, everything worked as it should

What is that pad?

 

[Harry Klippton]

What is that pad?

It's part of the housing of an adjacent fader connected to ground

 

[Harry Klippton]

Same pad was cracked on the other one. Reflowed and the record LED is behaving itself