Nvidia GPU chip problem - Page 4 - GSM-Forum

chris2ferz · 12-19-2009, 10:55

was hoping to check the slot to see if there is a problem with incorrect voltage - the OS can see as far as the slot but says its empty

Dan Collins · 12-19-2009, 16:30

Check the solder joints on the PCI connector

chris2ferz · 12-19-2009, 17:57

i checked those with a meter - no problem on that part
- seems beyond the pci slots somewhere

Trion · 12-21-2009, 23:07

Here's a video that'll help: http://www.youtube.com/watch?v=aY8tV...eature=related . Even though its in Spanish, do watch it as it can help you. Hopefully someone will be able to make a more comprehensive video. But for now this can give some ideas.

B.R.

pentu · 12-22-2009, 16:27

Quote:

Originally Posted by chris2ferz

was hoping to check the slot to see if there is a problem with incorrect voltage - the OS can see as far as the slot but says its empty

In your previous quote you said you have applied force on BGA ic when reflowing, is it the ICH (south bridge), then you have to replace ICH, since ICH also controls wifi, as far as battery not charging did you check with alternate battery, is the battery getting detected by the Operating System, if so then check for 'MAX" IC (battery charging IC), this should solve your problem.
B/R

chris2ferz · 12-23-2009, 03:35

on the dv6000 model motherboard which IC is responsible for charging the battery?

mp3team · 12-23-2009, 08:33

Quote:

Originally Posted by Trion

Here's a video that'll help: http://www.youtube.com/watch?v=aY8tV...eature=related . Even though its in Spanish, do watch it as it can help you. Hopefully someone will be able to make a more comprehensive video. But for now this can give some ideas.

B.R.

good videos

more videos http://www.youtube.com/user/lokesea2006

Satelites2 · 01-27-2010, 20:24

To reball this 6150 chip, one has to remove it.

How do you remove the Red Epoxie holding it down?

Is there a chemical to desolve it ?

Or is it simply chipped away after being heated?

Dan Collins · 01-28-2010, 16:48

PU8 MAX8724 is the batt charger chip.
Also suggest replacing MOSFET PQ57 SI4914DY

This is assuming an AMD board

bamboone · 02-12-2010, 00:08

Guys, this forum and especially this thread is EPIC! It's delightful to read such insight! How about this question: could the Nvidia GF6150 be replaced with another member of it's family which runs cooler? I just spent 45 minutes on the phone with Nvidia tech support (India), but sadly a tech person cannot typically answer questions meant for an engineer. Perhaps one of you knowledgeable person could tell me which Nvidia product would fit the same socket (for lack of the correct term), but produce much less waste heat?

baldev · 02-12-2010, 04:38

Quote:

Originally Posted by discount2

beyu0210 gjhnek8o hxddlnogz sxjzowve

Is there any relation with thread?

Dan Collins · 03-10-2010, 17:13

If you heat up the red epoxy with a hot air pencil while removing it with a fine pick, most will come off. Be very careful not to hit board with pick and damage traces. Then when removing chip, at 240c-245c it will soften the rest of the epoxy enough to remove the chip. I usually discard the chip after the excessive heat it takes to remove the epoxy and use a new chip.

Anyone else out there with different methods of removing this red epoxy?

As for the person with the wireless question. Yes the G6150 also controls the PCI express wireless circuit. So if the wireless isn't working, the G6150 is the problem.

katar83 · 03-28-2010, 23:20

Just to warn some people here as some of You havent got a clue about BGA and lead free.
You need at least 217C just to liquify leadfree balls.
To make reflow at least a bit reliable You need to keep the temperatue above 217C for at least 30sec with a top temp up to 230C. The whole profile needs to be properly adjusted, ramp, temp up and down, etc. This is extremely hard work and needs a lot of time and knowlegde/research. More than 230C peak temp can damage the chip pernamently. It also applies to lead solder and reballing.
To make repair completely reliabale You need a new chip from C2 or later family. Earlier versions of nvidias chip are simply badly designed and will brake sooner or later.
Best way to remove the red glue is heat gun or reballing.

linears4 · 03-29-2010, 09:29

hi, what you mean with " C2 version chip " or later family?

katar83 · 03-29-2010, 11:40

Ups, I mean version D/C 09 or later. Its a manufacture date. These chips do not overheat.

12-19-2009, 10:55	#46 (permalink)
chris2ferz Junior Member Join Date: Dec 2009 Posts: 8 Member: 1181211 Status: Offline Thanks Meter: 0	PCI voltage was hoping to check the slot to see if there is a problem with incorrect voltage - the OS can see as far as the slot but says its empty

12-19-2009, 17:57	#48 (permalink)
chris2ferz Junior Member Join Date: Dec 2009 Posts: 8 Member: 1181211 Status: Offline Thanks Meter: 0	tried that i checked those with a meter - no problem on that part - seems beyond the pci slots somewhere

12-23-2009, 03:35	#51 (permalink)
chris2ferz Junior Member Join Date: Dec 2009 Posts: 8 Member: 1181211 Status: Offline Thanks Meter: 0	where is the battery charging IC? on the dv6000 model motherboard which IC is responsible for charging the battery?

02-12-2010, 00:08	#55 (permalink)
bamboone Junior Member Join Date: Feb 2010 Posts: 1 Member: 1234021 Status: Offline Thanks Meter: 0	alternates to GF6150 Guys, this forum and especially this thread is EPIC! It's delightful to read such insight! How about this question: could the Nvidia GF6150 be replaced with another member of it's family which runs cooler? I just spent 45 minutes on the phone with Nvidia tech support (India), but sadly a tech person cannot typically answer questions meant for an engineer. Perhaps one of you knowledgeable person could tell me which Nvidia product would fit the same socket (for lack of the correct term), but produce much less waste heat?

03-10-2010, 17:13	#57 (permalink)
Dan Collins Freak Poster Join Date: Jan 2007 Posts: 210 Member: 437621 Status: Offline Thanks Meter: 19	If you heat up the red epoxy with a hot air pencil while removing it with a fine pick, most will come off. Be very careful not to hit board with pick and damage traces. Then when removing chip, at 240c-245c it will soften the rest of the epoxy enough to remove the chip. I usually discard the chip after the excessive heat it takes to remove the epoxy and use a new chip. Anyone else out there with different methods of removing this red epoxy? As for the person with the wireless question. Yes the G6150 also controls the PCI express wireless circuit. So if the wireless isn't working, the G6150 is the problem. Last edited by Dan Collins; 03-10-2010 at 17:20.

12-19-2009, 16:30	#47 (permalink)
Dan Collins Freak Poster Join Date: Jan 2007 Posts: 210 Member: 437621 Status: Offline Thanks Meter: 19	Check the solder joints on the PCI connector

12-21-2009, 23:07	#49 (permalink)
Trion Freak Poster Join Date: Nov 2003 Posts: 370 Member: 44625 Status: Offline Thanks Meter: 36	Here's a video that'll help: http://www.youtube.com/watch?v=aY8tV...eature=related . Even though its in Spanish, do watch it as it can help you. Hopefully someone will be able to make a more comprehensive video. But for now this can give some ideas. B.R.

01-27-2010, 20:24	#53 (permalink)
Satelites2 Junior Member Join Date: Jan 2010 Posts: 1 Member: 1220654 Status: Offline Thanks Meter: 0	To reball this 6150 chip, one has to remove it. How do you remove the Red Epoxie holding it down? Is there a chemical to desolve it ? Or is it simply chipped away after being heated?

01-28-2010, 16:48	#54 (permalink)
Dan Collins Freak Poster Join Date: Jan 2007 Posts: 210 Member: 437621 Status: Offline Thanks Meter: 19	PU8 MAX8724 is the batt charger chip. Also suggest replacing MOSFET PQ57 SI4914DY This is assuming an AMD board

03-28-2010, 23:20	#58 (permalink)
katar83 Junior Member Join Date: Feb 2010 Posts: 10 Member: 1236849 Status: Offline Thanks Meter: 2	Just to warn some people here as some of You havent got a clue about BGA and lead free. You need at least 217C just to liquify leadfree balls. To make reflow at least a bit reliable You need to keep the temperatue above 217C for at least 30sec with a top temp up to 230C. The whole profile needs to be properly adjusted, ramp, temp up and down, etc. This is extremely hard work and needs a lot of time and knowlegde/research. More than 230C peak temp can damage the chip pernamently. It also applies to lead solder and reballing. To make repair completely reliabale You need a new chip from C2 or later family. Earlier versions of nvidias chip are simply badly designed and will brake sooner or later. Best way to remove the red glue is heat gun or reballing.

03-29-2010, 09:29	#59 (permalink)
linears4 Junior Member Join Date: Mar 2005 Age: 52 Posts: 32 Member: 132074 Status: Offline Thanks Meter: 13	hi, what you mean with " C2 version chip " or later family?

03-29-2010, 11:40	#60 (permalink)
katar83 Junior Member Join Date: Feb 2010 Posts: 10 Member: 1236849 Status: Offline Thanks Meter: 2	Ups, I mean version D/C 09 or later. Its a manufacture date. These chips do not overheat.

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