Re: Sapphire Radeon R9 390 Nitro Chip issue.



The flux I use is Amtech nc-559-asm.
It was recommended by a friend for this kind of work.
I am going to give it a try with the temps you gave and if It doesn't work, I am gonna try and grind it off the board.

If I manage to successfully change the chip and the card doesn't work, I will try the coil removal and will do further measurements.
Thanks a lot for the reply and the tips....

Re: Sapphire Radeon R9 390 Nitro Chip issue.



Thanks for the tips.
The card had no power before I changed the 8A fuse near the pci-e.After that I could turn on the PC,but had no display.Then measured with the multimeter and it turned out it was the chip,maybe something else too, but started with that chip.
Damn I hate complicated shit 😁.I would never thought off the welding scenario.
Thank you....

Re: Sapphire Radeon R9 390 Nitro Chip issue.



What...Never thought of that.Damn this is gonna be tricky if that's the case.Ok, gonna try grinding the chip.
If it has welded itself to the board does that mean that there is gonna be more damage than the chip itself or it's uncertain?...

Re: Sapphire Radeon R9 390 Nitro Chip issue.



My hot air station has a preheating plate.I wrote in the post I tried preheating the board with no success...😔...

Hello guys.
I am trying to remove a chip from this card with no luck.
I tried preheating the board to 180 degrees(Celsius). Tried with 350 degrees (Celsius),400,450 and it doesn't want to come off. Tried different flux,tried different air speed,tried tinning the feet as good as I could and nothing.If you have any ideas please tell me what to do.
Any help will be appreciated.
Thanks in advance.

How the chip looks before heating :

[url]https://postimg.cc/Z9htBQQP[/url]

After heating:

[url]https://postimg.cc/cKcjKLwZ[/url]...

Re: New Members - please post your introductions here

Hello, guys. I really love this forum and it has helped me multiple times.
I am fixing things for a hobby and want to learn as much as possible.
Thank you for the knowledge and for this forum.
Glad to be here!