The chip's most likely done for. No chipset part gets burning hot on a 486 class motherboard... most chips get barely warm even at the max fsb frequency.

have a close look at the hot chips pins, see if any are lifted or touching, I had it happen on a video card where solder let go on 1 pin and it was shorting the pin next to it. Something shorting would defiantly make the chip hot

this is the chip that burns my finger,

https://www.aliexpress.com/item/Free-Shipping … 1327680091.html

sadly not available anymore.

my other hope was trying to get one brand new ,remove and older the new one very carefully

you can try this technique on the chip, I have done it before its not too hard if you use enough flux and ofcourse if you do a bit of soldering
https://www.youtube.com/watch?v=nyele3CIs-U

I the video is for soldering on new chips but the same theory applies for adding new solder to current chips to fix any bad or cracked solder that may be giving u shorts

i will check tonight when i get home
i got one of those USB microsopes 200x

if i see something...soldering iron
but such temperatures i think could already harm the chip if it was used like that in the past.

yes, depending on how long it was hot and how hot could be broken, but you have nothing to lose at this point