Need soldering assistance. Charlotte

REDLYNER

REDLYNER

Mall Crawling Race Rig
Joined
Oct 31, 2008
Location
Mountain Island
I tried to fix this myself, but my soldering failed after about 48 hours. This is one of the panels in my plasma tv. There is a factory defect (out of warranty) where the solder on the 6 points in the picture below show the cracks in the solder. This causes serious fluttering on the screen.

The common fix seems to be a healthy amount of solder. Anyone available to stop by with a better soldering gun than me? I'm in the Mountain Island Lake area. Exit 16 off of 485.

PM me if so!



IMG_1844.JPG
 
You need to remove that old solder. Additional new solder usually helps to add enough mass to help it come out with solder wick or a solder sucker, so fresh new stuff to help take out the old stuff. Anyway, the old fatigued solder joint is full of oxides along the fatigued area that won't conduct, and won't stick to new solder, which is why the old needs to be removed first for a proper repair. Assuming the solder joint is the only thing damaged, and not the plated via that goes through the circuit board, you should be good to go with removal and a reflow with fresh stuff. Some liquid flux will help wet out the old stuff for easier removal too.

I'm an ex-technician from many years ago.. ;)
 
Last edited:
REDLYNER said:
Anyone available to stop by with a better soldering gun than me?
Click to expand...

Don't know if it's any better than what you used but I have a Weller butane soldering iron you are welcome to borrow. Closest I get to you is downtown Charlotte though.
 
If I still worked on electronic boards everyday, I'd be happy to take a look. Unfortunately I don't do that anymore & don't have access to that equipment & all I personally own is a cheap soldering kit from college.

Fabrik8 said:
You need to remove that old solder. Additional new solder usually helps to add enough mass to help it come out with solder wick or a solder sucker, so fresh new stuff to help take out the old stuff. Anyway, the old fatigued solder joint is full of oxides along the fatigued area that won't conduct, and won't stick to new solder, which is why the old needs to be removed first for a proper repair. Assuming the solder joint is the only thing damaged, and not the plated via that goes through the circuit board, you should be good to go with removal and a reflow with fresh stuff. Some liquid flux will help wet out the old stuff for easier removal too.

I'm an ex-technician from many years ago.. ;)
Click to expand...

This guy is 100% correct on how it needs to be fixed. Make sure both sides of the board have the solder removed & add new solder to both sides (assuming the vias are still intact).
 
Brand and model of the tv?


Matt
 
Just to follow up with this, I took the tv apart again and tried cleaning the solder cracks.

Then bought a significantly nicer solder gun and application specific solder. It went on 100x better than my first attempt. Picture looks as good or better than new.

We'll see how long the solder stays on, but for now, it looks great ;).
 
Back
Top