n70 automatic power on-off! - GSM-Forum

woolfgang · 09-27-2007, 05:47

n70 turn on automaticly when i put the battery ,, after second i see that it turn off like i press the power botton,!when it on i see like i press the power botton and go to profile select and sometimes turn off and on by itself...!
i remove the power botton ,R4406 and change the RETU . the same problem exist!!!!hen i remove the RETU and check for empidense on the power switchwith the ohm-meter , there is nothig ,..!!
any idea?

hard_boy67 · 09-27-2007, 06:55

remove power botton and see what you see ? this is my idea

woolfgang · 09-27-2007, 22:13

Quote:

Originally Posted by hard_boy67

remove power botton and see what you see ? this is my idea

my idea is you did not see what i wrote.!

didarilm · 10-20-2007, 22:18

masters help me
i resive like this phon any solatin for me

sopnil · 10-20-2007, 23:20

hi,check power button and make manul format whats the result send me.............

reji · 10-21-2007, 14:31

Quote:

Originally Posted by woolfgang

n70 turn on automaticly when i put the battery ,, after second i see that it turn off like i press the power botton,!when it on i see like i press the power botton and go to profile select and sometimes turn off and on by itself...!
i remove the power botton ,R4406 and change the RETU . the same problem exist!!!!hen i remove the RETU and check for empidense on the power switchwith the ohm-meter , there is nothig ,..!!
any idea?

bro,

the power switch track from RETU doesnt goes directly to the switch, its connected through the EMIF filter Z4403. so check this filter also.

woolfgang · 10-23-2007, 19:40

Quote:

Originally Posted by reji

bro,

the power switch track from RETU doesnt goes directly to the switch, its connected through the EMIF filter Z4403. so check this filter also.

thank you for your reply , but as i recheck the the line i see (and you see)that the power switch is connected directly to the RETU .!!!!there is no connections between z4403 and the switch line!!!!

reji · 10-23-2007, 19:50

Quote:

Originally Posted by woolfgang

thank you for your reply , but as i recheck the the line i see (and you see)that the power switch is connected directly to the RETU .!!!!there is no connections between z4403 and the switch line!!!!

yes bro, in schematics the switch is connected directly to RETU.
but in the board its connected through Z4403. if u want check, remove that IC and check the voltage on the power switch.

r a nadeem · 10-23-2007, 20:20

Quote:

Originally Posted by reji

bro,

the power switch track from RETU doesnt goes directly to the switch, its connected through the EMIF filter Z4403. so check this filter also.

yes according to schem its direct goes to retu . not involve Z4402 or Z4403.
rashid

woolfgang · 11-03-2007, 11:53

Quote:

Originally Posted by reji

yes bro, in schematics the switch is connected directly to RETU.
but in the board its connected through Z4403. if u want check, remove that IC and check the voltage on the power switch.

thank you very much REJI. problem solved. true i just remove z4403 and see 2 pins under connected, i just clean and reinstall , the phone work fine!!!!!
strange! how we can depend on schematics!!!or its another hardware virsion im working on!

mr_loverman · 12-11-2007, 11:30

i have same problem. can you please upload picture of z4403. i cant find it on board

irfansait · 09-10-2008, 12:42

Z4403 is the display filter sir

Sin chanthoeurn · 09-10-2008, 13:36

Chang ic LCD (Right) near Real tim Clock

09-27-2007, 05:47	#1 (permalink)
woolfgang Insane Poster Join Date: Aug 2005 Age: 52 Posts: 64 Member: 172811 Status: Offline Thanks Meter: 135	n70 automatic power on-off! n70 turn on automaticly when i put the battery ,, after second i see that it turn off like i press the power botton,!when it on i see like i press the power botton and go to profile select and sometimes turn off and on by itself...! i remove the power botton ,R4406 and change the RETU . the same problem exist!!!!hen i remove the RETU and check for empidense on the power switchwith the ohm-meter , there is nothig ,..!! any idea?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
6101 power on off automatic!!!!!	hassan siddiqui	Nokia Hardware & Hardware Repair	0	10-07-2009 18:32
3110c automatic power gets off	imran_4_u	Nokia Hardware & Hardware Repair	1	03-14-2009 03:28
3110cn6300 automatic power gets off	imran_4_u	Nokia Hardware & Hardware Repair	8	02-14-2009 10:16
6210 power-on-off-on-off	Safrane	Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L )	5	07-20-2002 15:55
N3210 powers ON-OFF automatically when is on charger!?!	MaRiN	Nokia Hardware & Hardware Repair	1	12-24-2001 00:31

09-27-2007, 06:55	#2 (permalink)
hard_boy67 Junior Member Join Date: Sep 2007 Posts: 6 Member: 595260 Status: Offline Thanks Meter: 1	remove power botton and see what you see ? this is my idea

10-20-2007, 22:18	#4 (permalink)
didarilm Freak Poster Join Date: Oct 2006 Location: iran Age: 41 Posts: 184 Member: 372160 Status: Offline Thanks Meter: 11	masters help me i resive like this phon any solatin for me

10-20-2007, 23:20	#5 (permalink)
sopnil No Life Poster Join Date: Jun 2007 Location: dhaka,bangladesh Posts: 790 Member: 528679 Status: Offline Thanks Meter: 268	hi,check power button and make manul format whats the result send me.............

12-11-2007, 11:30	#11 (permalink)
mr_loverman No Life Poster Join Date: Oct 2004 Location: Tbilisi Age: 42 Posts: 607 Member: 87722 Status: Offline Thanks Meter: 112	i have same problem. can you please upload picture of z4403. i cant find it on board

09-10-2008, 12:42	#12 (permalink)
irfansait Insane Poster Join Date: Feb 2005 Age: 38 Posts: 86 Member: 116572 Status: Offline Thanks Meter: 22	Z4403 is the display filter sir

09-10-2008, 13:36	#13 (permalink)
Sin chanthoeurn Freak Poster Join Date: Jan 2006 Location: CAMBODIA Posts: 123 Member: 223257 Status: Offline Thanks Meter: 12	Chang ic LCD (Right) near Real tim Clock