|
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 . |
|
Register | FAQ | Donate | Forum Rules | Root any Device | ★iPhone Unlock★ | ★ Direct Codes ★ | Direct Unlock Source | Search | Today's Posts | Mark Forums Read |
Nokia Hardware & Hardware Repair all what you need for Hardware Repairing for Nokia Phones. Before writing any thread here try to check the Frequently Asked Questions Section. |
| LinkBack | Thread Tools | Display Modes |
01-18-2010, 09:42 | #1 (permalink) |
No Life Poster Join Date: Nov 2009 Location: Barisal Age: 44
Posts: 1,302
Member: 1427033 Status: Offline Sonork: 100.1596688 Thanks Meter: 1,204 | These are the most common faults found mobil phons : 1. Mobile Phone Dead 2. Insert Sim Card Problem 3. Hanging Problem 4. Network Problem 5. Mic Problem 6. Ringer Problem 7. Speaker Problem 8. Vibrator Problem 9. Display Problem 10. Mobile Restart/ Switch Off Automatically Problem 11. Call Cut Off Problem 12. Charging Problem 13. Keypad Problem 14. Sim Lock/ Mobile Lock Mobile 15. Contact Service/ Contact Retailer/ Contact Manufacturer 16. Battery Discharge Problem 17. Gallery Not Opening Problem 18. Camera Problem 19. FM Radio 20. LED Problem 21. Memory Card Problem 22. Bluetooth Problem check either handset is Short, open or leakage check continuity by meter at positive and negative terminal of battery connector if meter shows deflection on both side means its SHORT... If its one side full and other side slight deflect means LEAKAGE... if it does not deflect any side means OPEN.... AND if deflection is one side only then its OK. This method is applicable for all mobiles _________ How to Repair a Dead Mobile Phone If the mobile phone does not switch on, it is called a dead mobile. It can be due to many reasons 1. Water damage 2. Fall down 3. Not used for a long time ( Mostly battery is down) (1) Check the Battery. It should show 3.7 volts or as written on the battery. (2) Check the Battery Connector Check two things (a) Voltage coming or not (b) shorting Note : If there is shorting then clean the circuit in ultrasonic cleaner (Remove display, camera, etc before putting it in ultrasonic cleaner ) Clean the circuit with a soft brush and make it dry with a hair dryer or ****er. If the shorting does'nt go it may be due to shorting in an ic,capaicitor or circuit. if shorting is in ic u can check it by attaching a battery then press the on-off switch keep the battery for 10-15 seconds. after that remove the battery and check which ic bacomes hot. Reball or replace that ic. If shorting is in circuit it must be removed by ultrasonic cleaner Note - The circuit is made of three layers. if there is shorting in the middle layer it cannot be removed (3) Check the On/Off switch & voltage at on-off switch Note - Connect a charger. If charging is shown on display then the problem is with the on/off switch or software problem [/COLOR][/SIZE] (4) Try flashing the mobile. (5) If flashing cannot be done then there is hardware fault we first dry solder the Flash IC & RAM IC and check in the Software. if flashing cannot be done then we dry solder/reball/replace flash ic & RAM ic.After that dry solder/reball/replace Power IC, Network IC, Crystal, CPU |
The Following User Says Thank You to Dooha_Bd For This Useful Post: |
Bookmarks |
Thread Tools | |
Display Modes | |
| |
Similar Threads | ||||
thread | Thread Starter | Forum | Replies | Last Post |
These are the most common faults found mobil phons : | Dooha_Bd | Nokia Hardware & Hardware Repair | 0 | 01-18-2010 09:50 |
these are the fones that furious are meant to do! | flashfone | FuriouS II | 5 | 08-30-2005 13:58 |
Most common faults? | The_Designer | Hardware Equipments for GSM | 0 | 07-26-2005 10:43 |
Teleway and ONE-STOP-FACTORY are the most honest person I've ever seen! | Qbe | The Market Feed Back | 7 | 02-18-2004 11:30 |
|