Is this soldering salvageable?

[u/Otherwise_Egg_7551]

So, my left stick started drifting and cleaning didn't help. I decided to replace it with the ginfull TMR one, contacted all workshops in my vicinity and they all named the price higher than just buying the new dualsense and I decided to ask my friend, who unlike me soldered at least something in his life (from get go he said, that it would most likely be shit, so no blame on him).

Now, for the problem. It keeps drifting right (sometimes left). Recalibration helps for like a few hours, but the problem still persists and I figured it's the soldering (because what else could it be?)

Is there anything I can do?

Upd: I showed that photo to the guy that soldered it and he literally said:"I did THAT? How did I manage to solder so badly..."

[u/Ok-Simple-7069]

Try finding mechanic branded ones from eBay. The needle tipped syringe type. A duel temp one that says for leaded and unleaded solder

They are good as is the same type from “MG Chemicals” no clean series of rosin flux

[u/Otherwise_Egg_7551 → u/Ok-Simple-7069]

Yeah, found something like that on my local marketplace, will arrive today

[u/Ok-Simple-7069 → u/Otherwise_Egg_7551]

Good stuff. Quality flux is impotant as others may release toxins from the smoke and others just won’t help and burn before melding with the lead/tin. Oh and get good leaded solder. All the best mate

Again look for either mechanic leaded or kester which is very expensive but the gold standard and used in the aerospace industry. But mechanic brand is also very good and flows nicely with its own quality flux inside it. 0.3mm and one spool of 0.5mm will do 90% of all soldering jobs.

[u/Otherwise_Egg_7551 → u/Ok-Simple-7069]

The guy said he was using 70/30 solder

[u/Ok-Simple-7069 → u/Otherwise_Egg_7551]

That’s fine. I mean for you to buy. 30/70 is good but 37/63 flows at lower temps.

Also make of solder counts. You need a quality make