Wich level - GSM-Forum

uncleseb · 11-14-2009, 05:43

hello how high (level 2 to 5) should I settle for resolder a chip nvidia ?
many thanks

Raheeeeb · 11-14-2009, 07:12

For re flow or solder Nvidia settings are:
Pre heating Upper heater OFF
Lower Heater Fast Re flow
Upper Heater level is 4.
Machine in Normal Mode
Preheating end temperature C
Soak Upper heater Fast re flow
Lower Heater Re flow
Upper Heater level is 4.
Machine in Normal Mode
Soak end temperature 140 C
Re flow and Soak to peak at 185 C Upper heater Re flow
Lower Heater Preheat
Upper Heater level is 3.
Machine in Normal Mode
Re flow end temperature 185 C

These settings for Tin/Lead 64/36 not for lead free , T/C used in bended end not straight

uncleseb · 11-14-2009, 07:39

thank you for your prompt response.
The maximum temperature is 185 ° C, it does not need to apply between 217 and 230 for a perfect fusion ?
many thanks

Raheeeeb · 11-14-2009, 08:19

@Uncleseb

It is mentioned clearly that these steps for Tin/Lead 64/36 - Not lead free , i use to reball the lead free chips to Tin/Lead to aviod any thermal stress on the chip bonds and chip levels, during rework or reballing.

For Lead free you can chnage the end temperatures to be for pre heat 100 C , soak 165 C and teh reflow or final stage is 205 C.

T/C in bended end

BR//

pentu · 11-15-2009, 07:37

Original factory fitted NVIDIA ic on the board has leadfree profile and melts at 215C if the ic is replaced normally it will be with leadbased 63/37 combination as raheeeb said leadbased is better.

pentu · 11-15-2009, 07:52

i have altered the default profile given by JOVY to leadbased 185C, lead free 215C. it is working perfectly for me for reflows and BGA iC replacement, i have done lot of reflows and BGA ic replacement with nearly 95% success in reflow & IC replacement, some times reflows and Ic replacement will be successfull but display wont coming on because of some other problem on the MOBO, pls check that, one more advice while reflow or removing ic, remove the glue around the ic then apply flux around the BGA ic, then use hot air soldering and desoldering gun to **** the flux slowly under the BGA ic, this technique will enhance the wetting of the BGA balls under the IC and success of reflow is high

pentu · 11-15-2009, 07:57

if possible i will make a movie of the process and try post it on the forum, but i not immediately i need time

pentu · 11-15-2009, 08:05

JOVY is a good machine it is a poor mans BGA machine, it has its own draw backs & errors but if you identify those handling wont be a problem and it will help you a lot in your business but not a heavy duty machine like its seniors more professional (high cost) BGA rework machine.

**Dan Collins** · 11-16-2009, 23:57

Raheeeeb, great info as usual, much appreciated,
but you omitted the Preheating end temperature value.

While I have your ear, one more thing. Would you remove the lead free solder from a new nVIDIA chip and reball with leaded solder?

TNX,
Dan

Raheeeeb · 11-17-2009, 16:06

Quote:

Originally Posted by Dan Collins

Raheeeeb, great info as usual, much appreciated,
but you omitted the Preheating end temperature value.

While I have your ear, one more thing. Would you remove the lead free solder from a new nVIDIA chip and reball with leaded solder?

TNX,
Dan

Hi,

Pre heat mentioned in the second post , change leaded with the leadfree solder - why not ?

**Dan Collins** · 11-17-2009, 18:22

Raheeeeb,
Preheat temp in second post is for lead free. what about the leaded pre heat temp
Also, I assume you meant that it is a good practice to replace the lead free with leaded solder whenever possible. Only downside I see maybe a possible thermal breakdown by having to heat up chip 3 times instead of once.

Raheeeeb · 11-22-2009, 20:34

@ Dan Collins
Pre heating for the leaded is 80 C . I meant to replace the Lead free solder Joints with Leaded One. It works

Do you use the Large PCB supporter JV-LSU ?

Regards to all

**Dan Collins** · 11-22-2009, 21:04

What is JV-LSU? Is this a Jovy accessory that is optional for larger pcb? I do have a very large pcb holder from Zephyrtronics that holds up to 22" board.
Why do you ask?

Raheeeeb · 11-23-2009, 22:38

Quote:

Originally Posted by Dan Collins

What is JV-LSU? Is this a Jovy accessory that is optional for larger pcb? I do have a very large pcb holder from Zephyrtronics that holds up to 22" board.
Why do you ask?

Yes, JV-LSU is a Large PCB supporter From Jovy Systems. Zephytronics
22" it is different From ABC-2 20" x 18 " ?

regards

**Dan Collins** · 11-25-2009, 23:03

Raheeeb - Did some research on the JV-LSU and I see what it is now and I immediately ordered one. It is a new item and I see it as a must have item for doing motherboards. I may order a 2nd one for the bigger boards. Now if they had a top support to clamp over the JV-LSU lower support, then that would be ideal. Jovy also has a new small board supporter JV-SSU for anyone interested in doing very small boards.

11-14-2009, 05:43	#1 (permalink)
uncleseb Junior Member Join Date: Jul 2009 Location: FRANCE Posts: 20 Member: 1083488 Status: Offline Thanks: 0 Thanked 0 Times in 0 Posts	Wich level hello how high (level 2 to 5) should I settle for resolder a chip nvidia ? many thanks

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11-14-2009, 07:12	#2 (permalink)
Raheeeeb No Life Poster Join Date: Oct 2001 Location: -------- Age: 44 Posts: 1,011 Member: 7062 Status: Offline Thanks: 0 Thanked 118 Times in 37 Posts	For re flow or solder Nvidia settings are: Pre heating Upper heater OFF Lower Heater Fast Re flow Upper Heater level is 4. Machine in Normal Mode Preheating end temperature C Soak Upper heater Fast re flow Lower Heater Re flow Upper Heater level is 4. Machine in Normal Mode Soak end temperature 140 C Re flow and Soak to peak at 185 C Upper heater Re flow Lower Heater Preheat Upper Heater level is 3. Machine in Normal Mode Re flow end temperature 185 C These settings for Tin/Lead 64/36 not for lead free , T/C used in bended end not straight

11-14-2009, 07:39	#3 (permalink)
uncleseb Junior Member Join Date: Jul 2009 Location: FRANCE Posts: 20 Member: 1083488 Status: Offline Thanks: 0 Thanked 0 Times in 0 Posts	thank you for your prompt response. The maximum temperature is 185 ° C, it does not need to apply between 217 and 230 for a perfect fusion ? many thanks

11-14-2009, 08:19	#4 (permalink)
Raheeeeb No Life Poster Join Date: Oct 2001 Location: -------- Age: 44 Posts: 1,011 Member: 7062 Status: Offline Thanks: 0 Thanked 118 Times in 37 Posts	@Uncleseb It is mentioned clearly that these steps for Tin/Lead 64/36 - Not lead free , i use to reball the lead free chips to Tin/Lead to aviod any thermal stress on the chip bonds and chip levels, during rework or reballing. For Lead free you can chnage the end temperatures to be for pre heat 100 C , soak 165 C and teh reflow or final stage is 205 C. T/C in bended end BR//

11-15-2009, 07:37	#5 (permalink)
pentu Crazy Poster Join Date: Mar 2007 Posts: 59 Member: 473301 Status: Offline Thanks: 6 Thanked 11 Times in 6 Posts	Original factory fitted NVIDIA ic on the board has leadfree profile and melts at 215C if the ic is replaced normally it will be with leadbased 63/37 combination as raheeeb said leadbased is better.

11-15-2009, 07:52	#6 (permalink)
pentu Crazy Poster Join Date: Mar 2007 Posts: 59 Member: 473301 Status: Offline Thanks: 6 Thanked 11 Times in 6 Posts	i have altered the default profile given by JOVY to leadbased 185C, lead free 215C. it is working perfectly for me for reflows and BGA iC replacement, i have done lot of reflows and BGA ic replacement with nearly 95% success in reflow & IC replacement, some times reflows and Ic replacement will be successfull but display wont coming on because of some other problem on the MOBO, pls check that, one more advice while reflow or removing ic, remove the glue around the ic then apply flux around the BGA ic, then use hot air soldering and desoldering gun to **** the flux slowly under the BGA ic, this technique will enhance the wetting of the BGA balls under the IC and success of reflow is high

11-15-2009, 07:57	#7 (permalink)
pentu Crazy Poster Join Date: Mar 2007 Posts: 59 Member: 473301 Status: Offline Thanks: 6 Thanked 11 Times in 6 Posts	if possible i will make a movie of the process and try post it on the forum, but i not immediately i need time

11-15-2009, 08:05	#8 (permalink)
pentu Crazy Poster Join Date: Mar 2007 Posts: 59 Member: 473301 Status: Offline Thanks: 6 Thanked 11 Times in 6 Posts	JOVY is a good machine it is a poor mans BGA machine, it has its own draw backs & errors but if you identify those handling wont be a problem and it will help you a lot in your business but not a heavy duty machine like its seniors more professional (high cost) BGA rework machine.

11-16-2009, 23:57	#9 (permalink)
Dan Collins Moderator Join Date: Jan 2007 Posts: 207 Member: 437621 Status: Offline Thanks: 6 Thanked 18 Times in 14 Posts	Raheeeeb, great info as usual, much appreciated, but you omitted the Preheating end temperature value. While I have your ear, one more thing. Would you remove the lead free solder from a new nVIDIA chip and reball with leaded solder? TNX, Dan

11-17-2009, 18:22	#11 (permalink)
Dan Collins Moderator Join Date: Jan 2007 Posts: 207 Member: 437621 Status: Offline Thanks: 6 Thanked 18 Times in 14 Posts	Raheeeeb, Preheat temp in second post is for lead free. what about the leaded pre heat temp Also, I assume you meant that it is a good practice to replace the lead free with leaded solder whenever possible. Only downside I see maybe a possible thermal breakdown by having to heat up chip 3 times instead of once.

11-22-2009, 20:34	#12 (permalink)
Raheeeeb No Life Poster Join Date: Oct 2001 Location: -------- Age: 44 Posts: 1,011 Member: 7062 Status: Offline Thanks: 0 Thanked 118 Times in 37 Posts	@ Dan Collins Pre heating for the leaded is 80 C . I meant to replace the Lead free solder Joints with Leaded One. It works Do you use the Large PCB supporter JV-LSU ? Regards to all

11-22-2009, 21:04	#13 (permalink)
Dan Collins Moderator Join Date: Jan 2007 Posts: 207 Member: 437621 Status: Offline Thanks: 6 Thanked 18 Times in 14 Posts	What is JV-LSU? Is this a Jovy accessory that is optional for larger pcb? I do have a very large pcb holder from Zephyrtronics that holds up to 22" board. Why do you ask?

11-25-2009, 23:03	#15 (permalink)
Dan Collins Moderator Join Date: Jan 2007 Posts: 207 Member: 437621 Status: Offline Thanks: 6 Thanked 18 Times in 14 Posts	Raheeeb - Did some research on the JV-LSU and I see what it is now and I immediately ordered one. It is a new item and I see it as a must have item for doing motherboards. I may order a 2nd one for the bigger boards. Now if they had a top support to clamp over the JV-LSU lower support, then that would be ideal. Jovy also has a new small board supporter JV-SSU for anyone interested in doing very small boards.