Worn out solder pad

[Ctrl4Smilerz]

I am almost done with my first project and initially soldered the led to short, so I had to redo but one of the pads seems to be worn out, and the solder wont stick to the board regardless of how much flux i put on. Is there a way I can salvage this?

 

[fig]

Which circuit are you building? Many times you can use a jumper to bypass a pulled pad, and someone can tell you how to accomplish that. Also, pictures are always welcomed. Good luck!

 

[Ctrl4Smilerz]

Which circuit are you building? Many times you can use a jumper to bypass a pulled pad, and someone can tell you how to accomplish that. Also, pictures are always welcomed. Good luck!

Sure, it the LED cathode pad on the Plecostomus Fuzz.

 

[benny_profane]

That pad connects to R100 4k7 (i.e., the CLR). Determine the correct connectivity by finding the R100 pad with continuity to the SW pad. Connect the LED cathode to the other R100 pad.

Edit: is that flux residue all over the electrolytic cap, or has that been damaged by heat?

 

[Ctrl4Smilerz]

That pad connects to R100 4k7 (i.e., the CLR). Determine the correct connectivity by finding the R100 pad with continuity to the SW pad. Connect the LED cathode to the other R100 pad.

Edit: is that flux residue all over the electrolytic cap, or has that been damaged by heat?

Okay I ran a multimeter in continuity and the bottom pad on r100 connects with SW. So does that mean I should solder a wire between the top pad (or can i solder to the leg of the resistor?) and the LED cathode. Yes the plastic jacket on C100 got melted a little. Is there a way to test if the cap was damaged? I would prefer not to replace it if I don't need to so I don't risk damaging another pad.

 

[benny_profane]

Okay I ran a multimeter in continuity and the bottom pad on r100 connects with SW. So does that mean I should solder a wire between the top pad (or can i solder to the leg of the resistor?) and the LED cathode.

Yes, connect to the top pad. You can connect it however is easiest for you as long as there is electrical continuity.

Yes the plastic jacket on C100 got melted a little. Is there a way to test if the cap was damaged? I would prefer not to replace it if I don't need to so I don't risk damaging another pad.

It looks to be just aesthetic and not mechanical damage. However, since that’s a power cap (and electrolytic cap failures are not fun), I’d suggest replacing it. I don’t know how to verify in circuit without applying power (and testing for failure).