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3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700 (Read 11930 times)
goriath
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #45 - 21.06.13 at 12:20:07
 
The dark appearance of the Rampage BGA makes it look like really a bad guy.
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m14radu
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #46 - 21.06.13 at 13:28:11
 
Osckhar, your chip is working in the Michael board ?
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #47 - 21.06.13 at 13:33:19
 
m14radu wrote on 21.06.13 at 13:28:11:
Osckhar, your chip is working in the Michael board ?


I'm not sure I would want to do that, perhaps something in the board caused the chip to stop functioning. Better to make sure board is ok first.
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #48 - 21.06.13 at 14:00:14
 
With my chip Michel's card does not work either. Sometimes I am very impatience.

Regards,
Oscar.

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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #49 - 21.06.13 at 14:18:45
 
osckhar wrote on 21.06.13 at 14:00:14:
With my chip Michel's card does not work either. Sometimes I am very impatience.

Regards,
Oscar.



I would have been tempted too.
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #50 - 21.06.13 at 17:12:06
 
I just have a good new about the rampy chip and it come from 3dfx engineer Smiley
The rampage chip take voltage for boot up from agp connection and not INTERSIL SWITCHING  POWER SUPPLY HP6012CB 25AMP.
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osckhar
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #51 - 21.06.13 at 18:14:11
 
trevormacro wrote on 21.06.13 at 17:12:06:
I just have a good new about the rampy chip and it come from 3dfx engineer Smiley
The rampage chip take voltage for boot up from agp connection and not INTERSIL SWITCHING  POWER SUPPLY HP6012CB 25AMP.


Great news since it means test socket is not doing good contact if not at least chip would take heat and it is not so. Time to try with a clamp.

Card is little bended and can be the cause. Not sure if try to put it in his original stated with a preheater tool. I use this system when a PS3 /Xbox motherboard is bended but I dont like to use preheating tools on 3Dfx cards  since PCB color can change of tonality. At least it happens with VSA-100 family...Not sure how can react Rampage's PCB.

Regards,
Oscar.
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« Last Edit: 21.06.13 at 18:15:27 by osckhar »  
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #52 - 21.06.13 at 18:43:21
 
Yes, it is dangerous.
I would try first of all with the clamp.

Can you measure wih a multimeter if there is a proper connection betwen the agp socket and the rampage socket ?
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #53 - 22.06.13 at 00:12:27
 
A second Ex-3dfx hardware engineer give me other information about the rampage chip.
Not the same as the other, strange.

"It get's power form the intersil chip there should be voltage on the purple side of each large silver cap."

The two ideas are not the same. We can try both of them, no?
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« Last Edit: 22.06.13 at 00:13:03 by trevormacro »  
 
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osckhar
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #54 - 25.06.13 at 12:42:54
 
Today more tests.

I already have different clamps to test it:

...

@Dominik,
Here some pics

NOT TEST SOCKET:
...
...

Big size:
https://dl.dropboxusercontent.com/u/4383540/3Dfx/fotos/rampage/rampy/no_test_soc
ket_1.jpg

Regards,
Oscar.
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #55 - 25.06.13 at 13:04:12
 
Thanks Smiley

Before you dismounted the socket I thought it would've been solderer to the PCB. But now I can imagine why there are contact problems between PCB and Rampage chip.
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #56 - 25.06.13 at 16:46:54
 
Today, the others chips are arrived to Oscar's home and we have a good new and bad new. Let's see with Oscar Smiley

My website updated.
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« Last Edit: 25.06.13 at 16:48:57 by trevormacro »  
 
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #57 - 25.06.13 at 21:11:42
 
Lets hope that the chip and card are alive Smiley
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osckhar
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #58 - 26.06.13 at 10:49:00
 
Yesterday came in another package with different rampage chip evolution.

...

...

ASAT & ASE labeled chips are test vehicles 2 layers tape based substrates while the rampage chip was converted 1 layer substrate.

The good new is the Rampage chip works perfect even with 6 missing balls

I have noticed all the chips comes in very bad condiction on the BGA balls and even all have different missing balls. My guess is they used different clamp to make perfect contact but this system is very agressive and  deteriorate the bga balls.

I have tested Michel's rampage with different clamps without luck. Card continues without work. I have checked voltage and all seems ok, in intersil and condensator as directly on the bga test socket but at the moment not luck.

Question- Hank stated the resistor packs used on the card, for example RN112 was custom component for 3Dfx. It is an array composed by 5 resistors. Hank only added 4 0402 25ohm and lack one but this one is traced and connected one VIAS. I guess since Hank did not add it means it is connected to ground but I have tested it and it does not connected to gnd.

Regards,
Oscar.
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Re: 3dfx Specter 1000 AGP TEST SOCKET Rev.A1 4700
Reply #59 - 26.06.13 at 12:13:06
 
osckhar wrote on 26.06.13 at 10:49:00:
Question- Hank stated the resistor packs used on the card, for example RN112 was custom component for 3Dfx. It is an array composed by 5 resistors. Hank only added 4 0402 25ohm and lack one but this one is traced and connected one VIAS. I guess since Hank did not add it means it is connected to ground but I have tested it and it does not connected to gnd.

Regards,
Oscar.


Adding a resistor there doesn't have any effect, cause there is a trace between both solder spots. Even if you solder 25ohm resistor to it, it will remain 0 ohm Wink

Did you check the damaged trace that lead from one of the AGP connections? (backside of the card)
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« Last Edit: 26.06.13 at 12:14:39 by Loeschzwerg »  
 
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