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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Nokia > Nokia Hardware & Hardware Repair

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.

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Old 09-17-2008, 13:26   #31 (permalink)
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Quote:
Originally Posted by rashad-a View Post
6234 nokia 1st problem memory card not accepte i heat memory card ic after chek .. display wight screen phone is ok i have change 2 display ic but same problem please help urgent.....

brother remove 2 MMC realted ESD filter then check
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Old 09-18-2008, 10:29   #32 (permalink)
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2600c keypad problem select exit up down bottens i have change key pad ic but same problem ?
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Old 09-18-2008, 11:10   #33 (permalink)
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Quote:
Originally Posted by rashad-a View Post
2600c keypad problem select exit up down bottens i have change key pad ic but same problem ?
did you change keypad??????also check connector.
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Old 09-18-2008, 15:00   #34 (permalink)
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Quote:
Originally Posted by rashad-a View Post
2600c keypad problem select exit up down bottens i have change key pad ic but same problem ?
brother check or chnage keypad connector or keypad unit
same problem again?change keypad ic
post result
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Old 09-19-2008, 07:55   #35 (permalink)
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Quote:
Originally Posted by SHIJILFONOTLY View Post
NOKIA 6230,6230i NETWORK PROBLEM UPDATED
6230,6230i NONET WORK FOUND PROBLEM SOLVED CHANGING THIS CAPACITOR

THIS LAST MONTH AM SOLVED ABOVE 35 HANDSETS


REGARDS,
NOKIA.REPAIR.MASTERS TEAM
hi 6230i NO NET WORK FOUND PROBLEM help me
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Old 09-19-2008, 10:45   #36 (permalink)
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Quote:
Originally Posted by riyaz5016 View Post
hi 6230i NO NET WORK FOUND PROBLEM help me
Is the set says no network found within a short time ?
or
only after a long duration search ?
these two symptoms have to be treated in different ways

with in short time it says no network found , we have to
trace the beginning stages of receiving side kike antinna ,
contacts, antina switch and associated parts in RF block

if the case is said as in the later one
we had to suspect the demodulation section or decoding procedure, or any
corruption in operating system may also result in network related errors

so just do self test in either jaf or ufs
u can understand situation better
anyway try and stay tuned with this thread
regards,

NEIL
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Old 09-19-2008, 12:28   #37 (permalink)
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Sir,
ihv a N70 Rcvd White light ..( incoming Outgoing working ),,,
then i applied low heat on Display crystal ic..& after that Set Is dead..So Sir plzz help me
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Old 09-19-2008, 13:15   #38 (permalink)
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Originally Posted by broken_rules View Post
Sir,
ihv a N70 Rcvd White light ..( incoming Outgoing working ),,,
then i applied low heat on Display crystal ic..& after that Set Is dead..So Sir plzz help me
brother,both display emi heated?
right emi inside on/off ways
pls insert charger this time phone light trun on
sure that ic damaged
u must change display EMI(2Nos)
post result
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Old 09-20-2008, 09:03   #39 (permalink)
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Nokia 7610 keypad LED off. Any solution?
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Old 09-20-2008, 13:12   #40 (permalink)
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Quote:
Originally Posted by gsm_research View Post
nokia 7610 keypad led off. Any solution?
bro,display light okey?
Problem only keypad?
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Old 09-23-2008, 19:01   #41 (permalink)
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dear brother 1110i power off after 5 second of switch on ,i have flashed with jaf with latest version software but no result ,please
help me
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Old 09-24-2008, 05:16   #42 (permalink)
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Quote:
Originally Posted by ashokkumohanty View Post
dear brother 1110i power off after 5 second of switch on ,i have flashed with jaf with latest version software but no result ,please
help me
bro,u mean after 5 second phone restarted or trun off?
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Old 09-24-2008, 07:54   #43 (permalink)
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Local mode problem & test mode problem, some general facts

What is local mode?

Local mode is triggered either by a service battery / jig from Nokia being used to power the phone,
A faulty battery, a faulty phone or the phone has got "liquid ingress” also indicate local mode in display

See this picture




s in the above picture when BSI is grounded with a resistor of
5.1k to 7k1 and insert battery, nokia sets displays local/test mode on screen

By this way we can trigger the set in to local mode and software operation through USB


Local mode is triggered for reading & writing phone pm area (EEPROM),
File system formatting etc.

What is test mode?

Test mode is for doing file system removing like full factory defaults
Also can do pm area re-writing and for unlocking the phone


Some phones displays either of these modes directly when battery is inserted to the phone
and we gets in this condition for repairing

This may be either by a faulty battery or damaged hardware in the handset.
We can assume this is a BSI related fault

TEST THE PHONE WITH A WORKING BATTERY


Now what is BSI?

BSI, the thermistor used to sense the battery temperature and shut down the charger
Their is an internal circuit from power IC to BSI lead of battery
this circuit manages charging mechanism and battery sensing.




Faulty parts in this BSI circuit may lead to the local/test mode

Or finally we have to suspect power ic






Here NOKIA 1200 schematic is used to illustrate BSI way and possible reasons for this fault.






he blue colored parts are related to the BSI function .we have to trace from battery connector, capacitors, and then other parts. These parts can be identified by reading the higher level schematic of the phone. By following this logic you may be able to trace local mode in any nokia phone



with regards,
NEIL
nokia repair master team
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Old 09-24-2008, 10:13   #44 (permalink)
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brother after 5 second phone turh off
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Old 09-24-2008, 10:18   #45 (permalink)
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Quote:
Originally Posted by ashokkumohanty View Post
brother after 5 second phone turh off
Brother try to full erase flash memory then flash lastest version with pm
same problem again open handset then clean and wash PCB
this cause mainly UEM or RPL problem
post result
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