Anyone with 128 mb ram chips from Blueangel?

[Win_XP]

I know that the chips from ba are the same and works, but I need more details:

After desoldering, is there a problem to solder the chips to the Uni? (i mean a problem with chip pin's).

[pitlon]

Hi,

I upgrade my Qtek9000 by my self but it is not that simple since the components are BGA's type, that means that the soldering contacts of the components are under the chip you can see pictures in the forum.
Let me know exactly wan information do you need and I will try to help you, also try to read all the info in this link:
http://forum.xda-developers.com/showthread.php?t=370480

Qtek9000
Ranju v7.4 (WM6.1)
Radio: 1.17
Ram: 128M (update)
Adata 16G SDCH

[Win_XP]

I know about bga's and soldering, there is no problem :) I wants info about the BGA chips in Blueangel, I mean after desolder it is there any problem with placing it to the Uni mb, contact connections :)

[hbahaie]

Hi,

I upgrade my Qtek9000 by my self but it is not that simple since the components are BGA's type, that means that the soldering contacts of the components are under the chip you can see pictures in the forum.
Let me know exactly wan information do you need and I will try to help you, also try to read all the info in this link:
http://forum.xda-developers.com/showthread.php?t=370480

Qtek9000
Ranju v7.4 (WM6.1)
Radio: 1.17
Ram: 128M (update)
Adata 16G SDCH

I have managed to get the BA chips, and searching now for a repair shop to do the upgrade, but as my jasjar is not opened before and i want to keep it as a new unopened one unless i'll get a big difference from the upgrading, do u find it is worthy to do the upgrade, what is the benefits u have got after the upgrade??
Thanks u very much in advance

[pitlon]

Hi,

There is no problem the new chips are exactly the package so if you now who to replace BGA's there is no problem. But you should be very very sure that you know who to handle BGA's it is not that simple. What equipment are you going to use?

Qtek9000
Ranju v7.4 (WM6.1)
Radio: 1.17
Ram: 128M (update)
Adata 16G SDCH

[pitlon]

Hi,

I think it is worth it the benefits that I have now is that I can run all the applications I have and still have some more free RAM. Also I think that it is more stable. Regards the unit speed – I don’t think that there is a change.

Qtek9000
Ranju v7.4 (WM6.1)
Radio: 1.17
Ram: 128M (update)
Adata 16G SDCH

[D.Apsley]

The problems with reusing the BA chips is that they will have left some of the solder behind on the BA PCB. These solder balls are define specailly for the job, the solder balls used on the M-RAM chips are 400 Mircon lead solder balls. If you are to reuse these chips on another PCB (upgrade your Uni) then you really need to replace these solder balls with new ones to ensure that the BGA will solder down evenly and reliabley if you have one solder joint that does not connect you Uni will not work. You should also X-Ray the BGA's to check that they have soldered properly.

[Win_XP]

The problems with reusing the BA chips is that they will have left some of the solder behind on the BA PCB. These solder balls are define specailly for the job, the solder balls used on the M-RAM chips are 400 Mircon lead solder balls. If you are to reuse these chips on another PCB (upgrade your Uni) then you really need to replace these solder balls with new ones to ensure that the BGA will solder down evenly and reliabley if you have one solder joint that does not connect you Uni will not work. You should also X-Ray the BGA's to check that they have soldered properly.

Thanks for the answer :)

[rdosti]

Thanks for the answer :)

I'm in a very funny position. I have enough BA angel ram chips since I have contacts at a great dealer for cellphones (Windows Mobile Dealer) . The sad part is no one in India seems to know how to get it done or is ready to do it for customers who can even provided the chips. Id hate to send my handset outside my city, but dont have an option. For that matter no one in India seems to have done it here :( ... or no one with enough recognition to trust :(

[Win_XP]

I have a person that make some ram replacement mods for a few ASUS pocket pc's (gsm service) and I will go for an upgrade as soon as possible, here in Bulgaria the procedure costs 25 euro without the chips, I already have a BA board with ram chips :)

[D.Apsley]

Check out the http://wiki.xda-developers.com/index.php?pagename=Universal_128_Shop page there is details of someone in Pune, India maybe they can help.