Hello,
I received a v5-6000 3700 A from Claas (Chosen_Once) across my friend Stephan (Backfire)
I think some users will remember this card where tried to fix it with not success . For the rework he used a PLX chip leaded free - I dont recommend it since melting point is arround 220C - too much heat and stress for the PCB- it is suffering too much when with Hint bridge leaded melting point is 183C.
When he did the rework, card waken up but in few hours it stop to work again, he did some times the rework until he decided to stop since pads starts to be lifted.
Stephan asked me if I wanted to try to fix it and of course I want it!
12/02/2020
Here the card. It is wonderful, I love it.
BGA REWORK - DESOLDERING PLX CHIP -
I didn't know what I was going to find once I take out the PLX chip. I just desoldered the chip and didn't even clean the area, I just wanted to see how the area was . And I could already see that at least one PAD was lifted and zone really dirty...
Once I cleaned the area and passed the desoldering mesh, 2 more pads jumped. It felt like just looking at the pads - they just jumping - in the end there was a very affected area in the lower right right next to the AGP connector, and there jumped more pads, a total of 5 pads ... and later one more but this one N/C.
I talked to Stephan and told him that situation was very bad, but that I wanted to try it. The Hint bridge area is a very tiny area, VIAS, tracks and pads are exaggeratedly small to be able to work comfortably.
I told Stephan that to repair the pads I needed to break the traces of the damaged pads, that if Claas agreed, I would work in the 6000s. Of course he told me yes, that I do what I need to do it for fixing.
I started to work and take out the traces outside the chip.
Really it is as a ' chinese work' since zone is very small for rework but with a lot of patience started to re-work on pads and re-routing tracks. Not looks very nice but important is them do their function. : )
After a some days working and redoing the work done, I finally finished the area. The light is not good and the zone on picture looks worse than to the natural.
I also re-did a PAD N/C - I know I don't need to re-make an N / C pad but I wanted the ball to have a fulcrum, so I remade the pad, small but enough.
And all ready for a BGA session party. : )
And really BGA rework it was pretty good. So, it was all ready for powering up the 6000s and voilaaaaa...
But not everything could go perfectly, and I detected errors in memory. : (
So the work must continue.Card lock up when trying to load windows - need to re-check tsop sdram chips -
PS. Help - How can I add pictures on thread and not as link?
13/02/2021
Once fixed the shorts on memory- card works as te Queen it is.
For testing I had to add Hank's Rework since card locks up when FSAA was enabled. This card still came with original resistor handle SCKL clock speed.
CARD TESTING 8XFSAA.
QUAKE 3 - OpenGL
DONUT - Glide.
3DMARK2001SE - D3D
So, I can say card works perfect.
Regards,
Oscar.