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3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700 (Read 11847 times)
m14radu
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #30 - 20.06.13 at 18:57:35
 
Great Card Osckhar !
Congratulation for it Smiley

i want one toooooooo  Cheesy

Both rampage Card look just amazing !
I hope that you can bring Michael Card to live Smiley
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« Last Edit: 20.06.13 at 18:58:17 by m14radu »  
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Loeschzwerg
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #31 - 20.06.13 at 19:17:10
 
@Oscar: Try using copper-tape under the cover of the socket to increase the pressure on the chip. This might help to get a plain contact to the pins of the socket. If it doesn't help no problem, the tape can be easily removed.
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #32 - 20.06.13 at 20:11:23
 
Holy cow what a great find! So that's 3 Rampage cards in collector hands now? I am supremely jealous.

Good luck with the card! Congratulations!
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osckhar
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #33 - 20.06.13 at 21:35:04
 
Thanks at all!

I added the 2 new balls but sadly chip does not work yet! Sad

CHIP WITHOUT 2 BALLS
...

BALLS FIXED
...

...

CLEANING CHIP
...

At the moment chip does not work.

@Dominik, I am thinking to use a 'clamp' for getting more pressure.

Tonight more test.

Regards,
Oscar.

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m14radu
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #34 - 20.06.13 at 21:47:19
 
The Clamp tool should look like this one :

...

...

If you look closely on the first picture, the heatsink is used in combination with the clamp.


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osckhar
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #35 - 20.06.13 at 22:21:35
 
@Radu,
For me that kind of clamp is very agressive. I have checked the balls under microscope and they are really deteriorated even some balls has some missing part. I think the cause is for using such clamp. I will try to take some pictures from the rampage balls. I am thinking to use some tool less agressive though.

Test socket uses a kind of golden test in U shape, it is not plane. So, it is very agressive for the balls.

Regards,
Oscar.
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #36 - 21.06.13 at 00:00:29
 
Oscar, try planing the balls of the chip with very fine (600 grit) sandpaper on a sheet of flat glass or a mirror.
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osckhar
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #37 - 21.06.13 at 00:20:54
 
gdonovan wrote on 21.06.13 at 00:00:29:
Oscar, try planing the balls of the chip with very fine (600 grit) sandpaper on a sheet of flat glass or a mirror.


Good idea Gary!

Thanks,
Oscar.
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #38 - 21.06.13 at 01:02:43
 
Is it leaded solder or unleaded? Undecided

It REALLY should be leaded, as unleaded is what causes micro-fractures (i.e. the cause of RROD in X360) Wink
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #39 - 21.06.13 at 07:57:54
 
Maybe re-ball the whole chip?!
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #40 - 21.06.13 at 09:30:51
 
Loeschzwerg wrote on 21.06.13 at 07:57:54:
Maybe re-ball the whole chip?!


I agree, that would be the best choice: take all the "balls" from the chip and replace them with fresh balls (try to find leaded balls, *not* "lead free", those sucks)
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osckhar
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #41 - 21.06.13 at 11:17:23
 
Reballing- I would need to find a right stencil 40x40mm pitch 0.76mm. I think with a standard stencil would be enough for doing the reballing but before I will try to leave the balls surface as straight as possible with sandpaper. Yes, balls are leaded.

Rampage- At the moment Rampy does not want boots up. Seems as the chip does not get hot once connected. Now trying to find if chip takes voltage from agp connection or internal power supply but the first to do is check if really all the gold pins are in touch with PCB pads.

Here some pics.

Cleaning with ultrasonic.
...

Engineers did some relief on the test socket with dremel tool for avoiding resistor pack.

...

High size:
https://dl.dropboxusercontent.com/u/4383540/3Dfx/fotos/rampage/rampy/relief_done
_dremel.jpg

Regards,
Oscar.
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Loeschzwerg
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #42 - 21.06.13 at 11:32:51
 
Nice pics, please make one of the PCB and without the socket Smiley

From what I know the Rampage should be powered only by AGP, connecting the molex power will damage the card.

Does Michels Rampage chip work with your PCB?
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #43 - 21.06.13 at 11:53:30
 
Loeschzwerg wrote on 21.06.13 at 11:32:51:
From what I know the Rampage should be powered only by AGP, connecting the molex power will damage the card.


Hank said VERY bad things would happen if you tried to plug that in.
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osckhar
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #44 - 21.06.13 at 12:05:32
 
Yes, but I am talking about INTERSIL SWITCHING POWER SUPPLY HP6012CB 25A continous current. There are 4 on board to power various power rails. Not sure if Rampage chip takes the current from those or all from agp connection.

Michel's Chip does not work on my card either.

Yes, I will take some pictures without test socket onto the card.

Regards,
Oscar.
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