It's spent, dead, over, c-ya. Don't worry about trying to fix it anymore, I'd be more worried if the vendor you bought it from is going to warranty it after you opened it up and put a solder to it. When it does what your describing theirs no fixing it,it's dead.
So is Ms.T's Vanilla Custard sweet or is it just another custard with no real genuine sweetness to it like all the rest. No juice is too sweet or ever sweet enough for me, I always end up adding my all VG liquid sweetener to almost everything, forget the horrid ethyl maltol that taste fake and all the other stuff out there that takes hours to dissolve and actually maKE YOUR JUICE SWEET, This all VG sweetener is all natural, INSTANT, and has a real genuine sweet taste to it. Not to mention potent, 1 drop per mL. Make all juices taste sooo much better...'IF' you like sweet that is.