Excellent, thank you 
Right... 4 x 18 pins to de-solder and 4 x 18 pins to solder...
Long evening ahead it seems 
Hey Folks,
I have some great news to report The MSX2 is now fully working!!! After a couple of hours of de-soldering/soldering, cleaning, it's now all back in working order.
Here are a few pics of the procedure and a little gameplay video
I did a capture in Composite, I will try the RGB cable tomorrow, for now I just had to play Thank you very much for all your invaluable help, I couldn't have done without the nice people in this forum!!! I learned a lot about this machine and I hope it'll last for very long
De-soldering the old chips...
Soldering the new chips...
All done :)
All back together and operational :)
And now the end result!!!
Nice job! You must be happy 
Thank you Yes I used a pumped, I'm not really good with de-soldering braid x)
It's called "desoldering pump" and that's the great tool. But you have to keep it clean and lubricated so it sucks well.
Congratz on fixing your computer! Always nice to have more of them alive.
That’s what she said .
That’s what she said .
Yes, you need to keep certain things (and sometimes - people) clean and lubricated so they could work well.