I'll start from the beginning. I have a Sony Vaio Fit E SVF15 laptop, which is now 4 years old, running Windows 10. Some months ago the original battery abruptly died on me, so in June I purchased a replacement battery from Lenoge (Amazon link to the model). My charger is still original, though.
I was a little worried about getting a cheap replacement, but I really needed one and that's what I could afford at the time. It worked fine for a few months.
But in the past few weeks I noticed that once it charges to 100%, my screen starts flashing (the laptop rapidly switches between battery and AC/DC power) and there is a suspicious "shhhh" noise coming from the power supply jack. When I unplug the charger, the tip is very hot - painful to the touch.
At first it happened only at 100% (although for some reason not every single time), but it gradually got worse, and tonight it could only charge for a few minutes before the plug overheated. My battery doesn't seem to get hot to the touch while that happens.
In short, I am not sure if this is an adapter problem, a battery problem or something else. I would appreciate any help or advice. (I also hope that I didn't get any terminology wrong.)
As I can't charge it anyway, I removed the battery for the time being and am currently using the laptop without it. The adapter plug seems fine for now, but I will have to use it for a bit longer to see if it still heats up. If it doesn't, does that indicate a battery issue? What can be done?
Edited by laiskvorst, 29 December 2017 - 08:35 PM.