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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Chinese Models & Cloned Phones

Chinese Models & Cloned Phones All China Phone Platforms like (MTK, Spreadtrum.. etc.) Cloned Nokia Nokla & Motorola . etc. Phones are included

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Old 03-01-2012, 14:54   #1 (permalink)
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show only charging but no power on


bro
i have i china handest mediatek cpu .it shows only chraging but no power on
pls guide me how can i solve this problem i also try to short vbat and pwk point on the board but no sucess
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Old 03-02-2012, 06:45   #2 (permalink)
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pls any body guide me how can i solve this problem
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Old 03-02-2012, 07:03   #3 (permalink)
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Quote:
Originally Posted by ameho0102 View Post
bro
i have i china handest mediatek cpu .it shows only chraging but no power on
pls guide me how can i solve this problem i also try to short vbat and pwk point on the board but no sucess
hello dear pload your full pcb
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Old 03-02-2012, 16:42   #4 (permalink)
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Short on board pwr+gnd
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Old 03-02-2012, 18:58   #5 (permalink)
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Quote:
Originally Posted by ameho0102 View Post
bro
i have i china handest mediatek cpu .it shows only chraging but no power on
pls guide me how can i solve this problem i also try to short vbat and pwk point on the board but no sucess

first find out rx tx pinout than see this point


example




Jumper this line to on off switch
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Old 03-04-2012, 13:18   #6 (permalink)
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Quote:
Originally Posted by jawedakht View Post
Short on board pwr+gnd
bro i try this but no sucess
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Old 03-05-2012, 03:55   #7 (permalink)
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fist you know that mobile cpu is mtk or spedtrum then work

1. if cpu is mtk then power button + gnd jumper
2. if cpu is spedtrum then battry positive +power key jumper

any mobile power key poblam will be solve


if u like my solution plz click thanks
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Old 03-05-2012, 04:02   #8 (permalink)
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Here is pic




if u like plz click thaks
Attached Images
File Type: jpg MTK.JPG (19.6 KB, 583 views)
File Type: jpg spd.JPG (18.9 KB, 519 views)
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Old 03-05-2012, 07:09   #9 (permalink)
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normal heat to cpu ic ur problem will be solved i have try this many phone........ if u dont want to take risk then put ur pcb under bulb 20 min may be it help u
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Old 03-06-2012, 09:10   #10 (permalink)
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I try to heat cpu but no sucess prolem is still
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Old 03-06-2012, 11:58   #11 (permalink)
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just done same case now by formattin the phone with gpgdragon hope u good luck
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Old 03-06-2012, 12:38   #12 (permalink)
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bro its mediatek 6252 cpu how can i done this with gpg dragon this cpu is not supoort in this software
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Old 03-09-2012, 16:00   #13 (permalink)
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Clean the charging connector&charging ic.Problem solved.
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Old 03-10-2012, 14:17   #14 (permalink)
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try formating the phone that is software problem i think ok.
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Old 03-10-2012, 15:27   #15 (permalink)
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chk power Switch way
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