GSM-Forum  

Welcome to the GSM-Forum forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features.
Only registered members may post questions, contact other members or search our database of over 8 million posts.

Registration is fast, simple and absolutely free so please - Click to REGISTER!

If you have any problems with the registration process or your account login, please contact contact us .

Go Back   GSM-Forum > GSM & CDMA Phones Hardware Repair Area > Hardware Repair by brands

Hardware Repair by brands All about hardware problems sorted by brands inside subsections.

Reply
 
LinkBack Thread Tools Display Modes
Old 03-17-2006, 13:49   #1 (permalink)
Insane Poster
 
Join Date: Aug 2005
Location: Capetown, South Africa
Age: 38
Posts: 94
Member: 169052
Status: Offline
Thanks Meter: 111
Training manuals for beginners

Hi
Anyone who can help me to compose a training manual for cellphone technician, please email me: celtrain@polka.co.za

I want to show or tell, how to test for faulths, where to start, etc?

How to test the caps, resistors, diodes on the pcd boards?

How to know which chips to remove or to replace and why?

Any help, please!!!!!!!!!!
  Reply With Quote
The Following 25 Users Say Thank You to lucascape For This Useful Post:
Show/Hide list of the thanked
Old 03-18-2006, 08:55   #2 (permalink)
Insane Poster
 
Join Date: Aug 2005
Location: Capetown, South Africa
Age: 38
Posts: 94
Member: 169052
Status: Offline
Thanks Meter: 111
Traing Manuals

I have a manual allready type out, but I need extra info on testing??

How to test the parts and why?
How to replace them and why?

Any help, I can e-mail the manual to you, just email me with help and you email adress.

regards
Lucas
  Reply With Quote
The Following 6 Users Say Thank You to lucascape For This Useful Post:
Show/Hide list of the thanked
Old 03-19-2006, 17:09   #3 (permalink)
Freak Poster
 
artusius's Avatar
 
Join Date: Sep 2004
Location: United Kingdom
Age: 42
Posts: 255
Member: 82796
Status: Offline
Thanks Meter: 21
Hi all,
How test the parts?
At first you may learn read schematic diagrams.
Parts in phones are similar with radio,tv or other device,maybe smaller.If you know how work diod,capacitor,resistor,transistor,etc., then you can test
parts in mobile.
Finding faults comes with expirience
Read forums,ask and learn.Is the best way for study
  Reply With Quote
The Following 6 Users Say Thank You to artusius For This Useful Post:
Show/Hide list of the thanked
Old 03-19-2006, 17:19   #4 (permalink)
No Life Poster
 
..::My3gtech::..'s Avatar
 
Join Date: Jul 2005
Location: Mobile solution at Pak_Lahore
Age: 36
Posts: 986
Member: 158032
Status: Offline
Thanks Meter: 331
Hi guy's this is a good move for beginners we appriciating your move well done and keep it up my best regard's for you my friend's.

BR
Omairbutt786
  Reply With Quote
The Following 3 Users Say Thank You to ..::My3gtech::.. For This Useful Post:
Show/Hide list of the thanked
Old 03-19-2006, 20:57   #5 (permalink)
Insane Poster
 
Join Date: Feb 2006
Posts: 79
Member: 234532
Status: Offline
Thanks Meter: 24
dear friends tell me more about u.Are u from a electeronocs background. there are two suggestions from me.u shuold join a institute for basic electronics. or send me any manual to me with problem I will try to solve and will send to u.write here yor quostions and I will try to solve.and time to time I will send attech files releted to subject.for today DIODS TEST : a doide shows a one way deflection when we test it on a multitester on continuety range. a capacitor dont show any deflection in lowest continuety range(exept electrolytic cap.)and a resister shows its value, but in pcb it dont show acurate value therefore no need to check resister in pcb. u can also masure voltage on lower DC range.Is this suiteble for u? tell me then I willproceed.
GOOD LUCK.
  Reply With Quote
The Following 6 Users Say Thank You to shirly For This Useful Post:
Show/Hide list of the thanked
Old 03-22-2006, 13:09   #6 (permalink)
Insane Poster
 
Join Date: Mar 2006
Posts: 84
Member: 243866
Status: Offline
Thanks Meter: 10
sir i m sahil i wnt to know how to repair mobiles i want to know when cutomer
tell us that i have problem with my cell like samsung c100 with please wait and restart problem wat should i check where is the problem
i dont know which part of the cell is defected thats it
  Reply With Quote
The Following 5 Users Say Thank You to sahilsahil For This Useful Post:
Show/Hide list of the thanked
Old 03-24-2006, 14:31   #7 (permalink)
Freak Poster
 
Join Date: Aug 2004
Posts: 101
Member: 76716
Status: Offline
Thanks Meter: 15
Hi Shahil

Quote:
Originally Posted by sahilsahil
sir i m sahil i wnt to know how to repair mobiles i want to know when cutomer
tell us that i have problem with my cell like samsung c100 with please wait and restart problem wat should i check where is the problem
i dont know which part of the cell is defected thats it
Hi Shahil,
I suggest you should join a institute for basic electronics. To earn mony first you have to invest. With your learning together u can use this forum. Then u will understand all the answers of our great healpers. So please do study. In India we say " BINA GURU GNAN NAHI".
  Reply With Quote
The Following 6 Users Say Thank You to parvezjk For This Useful Post:
Show/Hide list of the thanked
Old 03-30-2006, 11:34   #8 (permalink)
Insane Poster
 
Join Date: Aug 2005
Location: Capetown, South Africa
Age: 38
Posts: 94
Member: 169052
Status: Offline
Thanks Meter: 111
Training Manuals

If you want mail supply the right email addy or email me?
  Reply With Quote
The Following User Says Thank You to lucascape For This Useful Post:
Old 03-30-2006, 19:06   #9 (permalink)
Insane Poster
 
Join Date: Feb 2006
Posts: 79
Member: 234532
Status: Offline
Thanks Meter: 24
Quote:
Originally Posted by lucascape
Thanks for the info, Thats what i need.
I have done electronics 8 years ago, back on the mind somewhere?

Can you maybe email me as I am n ot always on the forum and could ask and respond faster with email?

My email: celtrain@polka.co.za

Regards
Lucas
Dear friend it will be more good to put answer and quostions here so that all intrested members can read.also many more subjects and rilated refrenses are here for u.but if u are not always on forum u can mail me I will try to answer .
best wishes:shirly.
  Reply With Quote
The Following 3 Users Say Thank You to shirly For This Useful Post:
Show/Hide list of the thanked
Old 03-31-2006, 07:28   #10 (permalink)
Insane Poster
 
Join Date: Aug 2005
Location: Capetown, South Africa
Age: 38
Posts: 94
Member: 169052
Status: Offline
Thanks Meter: 111
Hi shIrly

Okay

Which equiptment should one have:
Hot airstation, Soldering station, Unlocking boxes, tools, etc?

HOw to know which parts to repalce and when and why?

How to test the PA and know if to replace it?
How to test the antanna switch and know when to replace it?
How to test, Mic, Speaker, ringer and vibrator?
How to test the Hagar, CCont, Cobba, UEM, CPU, Flash, etc and know when to change them?

How to know when software and when Hardware?

regards
Lucas
Can you post answers here and also email them to me, please?
  Reply With Quote
The Following 10 Users Say Thank You to lucascape For This Useful Post:
Show/Hide list of the thanked
Old 03-31-2006, 13:08   #11 (permalink)
Insane Poster
 
Join Date: Aug 2005
Location: Capetown, South Africa
Age: 38
Posts: 94
Member: 169052
Status: Offline
Thanks Meter: 111
question one?

Which equippment should one have:
beginners: Hot airstaion, ultrasonic bath, Soldering station, unlocking boxes
advanced: Spectrum analyzer, ocilloscope, rf generators

What else and why do they need it?
  Reply With Quote
The Following 3 Users Say Thank You to lucascape For This Useful Post:
Show/Hide list of the thanked
Old 03-31-2006, 13:20   #12 (permalink)
Insane Poster
 
Join Date: Aug 2005
Location: Capetown, South Africa
Age: 38
Posts: 94
Member: 169052
Status: Offline
Thanks Meter: 111
Question Two?

How to know which parts to replace and why and how?

Signal = No signal, weak signal, jumping signal, 10 sec dop signal
Dead = Not switching on, not battery
Liquid damage = where to begin
Software = when to know when it's software and how to go about it
Speaker, ringer, vibrator, mic = How to test it
Simcard = How to test?
keypads = How to solve problems

  Reply With Quote
The Following 4 Users Say Thank You to lucascape For This Useful Post:
Show/Hide list of the thanked
Old 03-31-2006, 13:32   #13 (permalink)
Insane Poster
 
Join Date: Jan 2006
Posts: 83
Member: 225922
Status: Offline
Thanks Meter: 3
not able to call

hi guys please add not able to call even when phone is registered & with high signal it just dials up & get cut.
  Reply With Quote
The Following 2 Users Say Thank You to spring For This Useful Post:
Old 03-31-2006, 13:42   #14 (permalink)
Insane Poster
 
Join Date: Aug 2005
Location: Capetown, South Africa
Age: 38
Posts: 94
Member: 169052
Status: Offline
Thanks Meter: 111
Battries

CELL PHONE BATTERIES - NOTE CAREFULLY

It should be noted that all cell phone batteries have a LIMITED LIFESPAN.
Batteries will only accept approximately 200 RECHARGE CYCLES before becoming problematic. (This means that the average battery which is charged fully twice per week in theory will have a lifespan of between 18 months and 24 months.)
TAKE NOTE: Batteries which are continually charged using a "Car Charger" are prone to early failure. This is due to the fact that a car charger is designed as a "BOOSTER" and does not deliver the full required charged as specified by the manufacturer. NiCad (Nickel Cadium) Batteries are prone to building up a "MEMORY EFFECT" due to the battery being habitually recharged without it being fully discharged. This shortens the battery life substantially. Lithium Ion and Lithium polymer Batteries are not affected by this syndrome.

Feel free to add anything else
  Reply With Quote
The Following 5 Users Say Thank You to lucascape For This Useful Post:
Show/Hide list of the thanked
Old 03-31-2006, 14:25   #15 (permalink)
Insane Poster
 
Join Date: Aug 2005
Location: Capetown, South Africa
Age: 38
Posts: 94
Member: 169052
Status: Offline
Thanks Meter: 111
Phone no signal

Celtrain 2003
Copyright



Before commencing with any repair procedure always DIAGNOSIS Action to be taken
test the phone to verify the customers complaint.
CHECK THE PHONE FOR ANY VISIBLE PHYSICAL DAMAGE



Antennae Physical Damage Replace

Internal Damage - Phone Dropped / Mositure/ Water Physical Damage Check Components & Replace as required
Water/Moisture Damage Clean & Reflow Board

Antennae Connector Physical Damage Check - Lift Connector pin to make contact/ Repalce

Antennae Switch Dry Joint/Physical Damage Reflow Dry Joint / Replace if Damaged

Power Amplifier Dry Joint/Physical Damage Reflow Dry Joint / Replace if Damaged

DSP / HAGAR Dry Joint Reflow Dry Joint / Replace if Damaged

CPU Dry Joint Reflow Dry Joint



Antennae Physical Damage Replace

Antennae Switch Physical Damage Replace

Power Amplifier Physical Damage Replace

DSP / HAGAR Physical Damage Replace

Software Software Failure Software upgrade / Flashing
  Reply With Quote
The Following 13 Users Say Thank You to lucascape For This Useful Post:
Show/Hide list of the thanked
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
thread Thread Starter Forum Replies Last Post
TRAINING MANUALS for beginner cel_phon Hardware Repair by brands 46 02-24-2013 01:45

 



All times are GMT +1. The time now is 09:11.



Powered by Searchlight © 2014 Axivo Inc.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
- GSM Hosting Ltd. - 1999-2014 -
Page generated in 0.49570 seconds with 9 queries

Content Relevant URLs by vBSEO