This is a circuit board from my slow cooker. It quit heating a week ago so I opened it up and found a broken wire. That was easily fixed.
I figured while I had it apart I should look at the display board and see if I can fix the missing segments. I resoldered the one pin but nothing changed.
Unfortunately my eyes arent what they used to be so the others someone pointed out will be a challenge.
jjagaimo@lemmy.ca 10 months ago
Solder is a low melting point metal used to join two metals to create a joint, where the solder fills the gap and bonds to both metals. This is commonly used in electronics to bond components to the board. For a good solder joint, the solder must be brought up to the peoper temperature, and the pads on the PCB (metal 1) and leads of the component (metal 2) need to be heated enough. Additionally, flux is added to the solder to remove oxides on the component leads and PCB pads to allow the solder to bond to the metal; oxides can prevent toe solder from sticking.
A cold solder joint is one that does not reach the proper temperature and/or does not have enough flux, leading to the solder not bonding to the joint, having a scaly/bubbly/matte appearance, and a weaker more brittle joint. Flux also doesnt do as good a job at lower temperatures so it’s important for the joint to get hot enough.
XEAL@lemm.ee 10 months ago
Then with my shitty ass soldering iron and skills I overheat the surrounding components while attempting to bring the soldering spot to temperature…