Training manuals for beginners - Page 21 - GSM-Forum

jones@vigiland · 08-24-2006, 15:09

pls i have with nokia 3510i network problem can someone help me with picture solution. thanks you all

7th_gear · 08-25-2006, 07:19

@ kss info

Quote:

dont give misleading infomations

I dont think that there is any misleading information by shahjad, if you notice the title of this thread, it is for beginners.As it goes it is lifted a bit advanced.For a master trainer like you, it would seem irrelevant but for us beginners it is a pedestal on which we start to stand take a step and follow you.

We would appreciate your advanced knowledges though if you prefer to share it with us here

why don't you share us the process of reballing a 7610 UEM, I am having a hardtime doing this thing. I am just putting the solder balls one by one, you know how hard it is.I find no available BGA template for it. I am detaching a uem from 3220, already saved PM 208 ready to be written as RPL.

How 's that master ? c'mon show to us how it is done

Hamzah2004 · 08-25-2006, 08:01

Quote:

Originally Posted by shanchai

@ kss info OR ACTUALLY ANYONE

why don't you share us the process of reballing a 7610 UEM, I am having a hardtime doing this thing. I am just putting the solder balls one by one, you know how hard it is.I find no available BGA template for it. I am detaching a uem from 3220, already saved PM 208 ready to be written as RPL.

How 's that master ? c'mon show to us how it is done

This is an answer to worth waiting for KSSinfo. looking at your website you seem to be the right to ask such kind of thing.

Respect

Wassalam

naughtycell · 08-25-2006, 08:33

Quote:

Originally Posted by kssinfo

well shazads what ever u have mentioned here is only for old models like dct3

not for the new &latest phones .le me correct u here there is no charging ic in the new phones starting from dct4 onwards in most of te phones in sucha case u need to replace the charging diode .
& most of the responsibilty is taken by the uem ( universal enery manageent ic ) or your power supply ic .U can find this ic to be in bigger or almost equivalent is sze of the cpu.

any ways i appreciate ur lessons but dont give misleading infomations

www.kssinfotech.com or mail me [email protected] for any informations

i am not a expert but i have just 7 years of expereince in this i am a corporate trainer for nokia & samsung .We also train for companies like wireless networks of usa & flextronincs in india .

But some BB5 phones doesn't have UEM chips , insted of that they have 2 power chips ?

7th_gear · 08-25-2006, 08:55

6630 which is BB5 use RAP3g counterpart of UEM

flyingdoctor · 08-29-2006, 16:07

Two sites give good info on BGA reballing.
www.intertronics.co.uk/general/tecres.htm
www.solder.net/technical/reballing.asp

flyingdoctor · 08-29-2006, 16:16

Quote:

Originally Posted by naughtycell

But some BB5 phones doesn't have UEM chips , insted of that they have 2 power chips ?

Could you please enlighten us. What are the chips names and how are functons divided between them. That replace UEM.

naughtycell · 08-29-2006, 18:07

Quote:

Originally Posted by flyingdoctor

Could you please enlighten us. What are the chips names and how are functons divided between them. That replace UEM.

OK , for ex. in nokia 6630 there are RETU (N2200) and TAHVO (N2300)

1amigo · 08-30-2006, 16:11

Sorry that I forgot to explain in the last chapter that if we connect 2 cells of 1.2Volts in series as shown below, we get a voltage across them which is the sum of their respective voltages i.e.1.2v + 1.2v = 2.4v :

Similarly if we connect 3 cells in series , what we get is 3.6 volts which is generally used now-a-days in mobile phones batteries.

So in this way by connecting more than one cell of 1.2v in series we can get a battery with voltages in the multiples of 1.2v like 2.4v, 3.6v, 4.8v, 6v, 7.2v etc.
A normal battery has only two terminals brought out of its casing. But the batteries used in Mobile Phones, many times have more than 2, at least 3 or even 4 (at the most) terminals brought out on its casing. You may wonder why so? It is very interesting to go into the details and know more about it. Though the charging circuit inside a mobile phone is generally designed with providing a very very safe charging voltage to the battery, it is made more perfect with the use of this additional terminals provided on the battery casing.
For understanding more on Batteries, please check at
http://forum.gsmhosting.com/vbb/showthread.php?t=328521

eng_john4u · 08-30-2006, 17:15

How can i repaire my Gsm online free . i need someone to assist me for that .or if possible to learn the repair online free.
thanks.
john

1amigo · 08-30-2006, 18:13

Quote:

Originally Posted by eng_john4u

How can i repaire my Gsm online free . i need someone to assist me for that .or if possible to learn the repair online free.
thanks.
john

Even *** cannot help them who do not help themselves!
Look up in this very thread itself and on the whole forum. You will find whatever you need except the practise, the skill and the experience. Do not look for a Magic Stick to teach you Mobile Repairing by just a touch please !!!!
I don't mean to discourage you or disrespect you, but please use the "search" button on GSM forum and you will find useful information on any GSM topic practically, but yes you will have to decide on what you want to search !

the crazy1 · 09-01-2006, 22:58

hi guys
i have just started working with mobile phones infact i have just bought my first faulty mobile a nokia 6600 after trawling through the internet i found a site detailing how to dismantle it and with the help of this site i found what i think is the fault a crack across the keypad ic or (emi flip chip) not sure how to refer to it anyway i believe that is the fault i have also found a place that sells them but i am having trouble finding info on how to remove the old one and fit a new one most of the posts i have read are for the more experienced so if you have any ideas, pictures or indeed this wonderful manual that i have read about i would be grateful
thanks for all your help what a wonderful forum i hope i can fix my first phone and make a small business out of this
regards

RB3tech® · 09-05-2006, 04:03

I'll post some my contribution regarding this matter.
More Power Budz Amigo

aslamjana · 09-05-2006, 11:21

Whay are the no new post in those 3 or 4 days? Are experts tiered or retiered?

naughtycell · 09-05-2006, 11:58

Quote:

Originally Posted by aslamjana

Whay are the no new post in those 3 or 4 days? Are experts tiered or retiered?

OK untill they do I'll give you and all beginners members some type of exercises at the light of the previous lectures.
what is the voltage devider ( resistors ) and how it works , search the net and google then after you will have somthing to add.
BR

08-30-2006, 17:15	#310 (permalink)
eng_john4u Junior Member Join Date: Aug 2006 Posts: 6 Member: 340535 Status: Offline Thanks Meter: 0	How Can I Repair My Gsm Online Free How can i repaire my Gsm online free . i need someone to assist me for that .or if possible to learn the repair online free. thanks. john

09-01-2006, 22:58	#312 (permalink)
the crazy1 Junior Member Join Date: Aug 2006 Age: 48 Posts: 19 Member: 340902 Status: Offline Thanks Meter: 1	training manual hi guys i have just started working with mobile phones infact i have just bought my first faulty mobile a nokia 6600 after trawling through the internet i found a site detailing how to dismantle it and with the help of this site i found what i think is the fault a crack across the keypad ic or (emi flip chip) not sure how to refer to it anyway i believe that is the fault i have also found a place that sells them but i am having trouble finding info on how to remove the old one and fit a new one most of the posts i have read are for the more experienced so if you have any ideas, pictures or indeed this wonderful manual that i have read about i would be grateful thanks for all your help what a wonderful forum i hope i can fix my first phone and make a small business out of this regards

09-05-2006, 04:03	#313 (permalink)
RB3tech® Insane Poster Join Date: May 2006 Posts: 84 Member: 553076 Status: Offline Thanks Meter: 7	This is a good idea budz. I'll post some my contribution regarding this matter. More Power Budz Amigo

09-05-2006, 11:21	#314 (permalink)
aslamjana Freak Poster Join Date: Feb 2006 Location: country Pakistan city mailsi Posts: 111 Member: 238322 Status: Offline Thanks Meter: 34	A Question Whay are the no new post in those 3 or 4 days? Are experts tiered or retiered?

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flyingdoctor Freak Poster Join Date: Nov 2004 Posts: 162 Member: 92303 Status: Offline Thanks Meter: 4	Two sites give good info on BGA reballing. www.intertronics.co.uk/general/tecres.htm www.solder.net/technical/reballing.asp