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

Sony Ericsson Hardware Repair Post here your Hardware Repairing Hints or Problems with SonyEricsson and Sony Phones.

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Old 10-06-2007, 20:14   #1 (permalink)
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k750i cant detect


hi mates
i have problam with k750i. k750 have littile problam only phone code but when i try to detect with any box mobile auto power on and cant detect plz help me i try to change charging jeck and also charging ic but still not solve my problam. i have se tool and also cruiser but both same plz help me and tell me how can boot my k750.
wbr
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Old 10-06-2007, 20:33   #2 (permalink)
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try to change interface ic
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Old 10-06-2007, 21:30   #3 (permalink)
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Are you using Cruiser 5-1?? then connect 3 volts to cable... Problem solved
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Old 10-07-2007, 05:59   #4 (permalink)
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Quote:
Originally Posted by gsmgold View Post
hi mates
i have problam with k750i. k750 have littile problam only phone code but when i try to detect with any box mobile auto power on and cant detect plz help me i try to change charging jeck and also charging ic but still not solve my problam. i have se tool and also cruiser but both same plz help me and tell me how can boot my k750.
wbr
check out data interface (Reheat/Replace) :

1- EMI/ESB-FILTER_USB ----------> N2802

2- MAX4717 ----------------------> N2801

B.R
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Old 10-10-2007, 01:41   #5 (permalink)
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Have same problem ,
Any sugesstion
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Old 10-10-2007, 02:54   #6 (permalink)
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may be problem at connector plug in..try to change...or u can try use pwer supply with 3.7 volt use to battray connector

br
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Old 10-10-2007, 19:29   #7 (permalink)
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I am sure It is water damaged set, as it becomes on itself by connecting to any device. So open the set and clean the connector and rehot the data i.c. or change it. problem will be solved.
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Old 10-10-2007, 22:01   #8 (permalink)
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thanks for your advices but i cant solve my problam i try with cruiser with 3 v battery but cant solved.
i think its 2802 problam s to day ichange then post result.
thanks all for reply
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Old 12-29-2007, 17:04   #9 (permalink)
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same here,a dead k750 cant detect by any tool,plz help.
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Old 02-17-2008, 11:59   #10 (permalink)
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hi dears i have k750 which is not attaching with Cruser. I have also used SE Tools Finally i found following ic is not working correct. Is that any person which can give me jumper of following ic pleas help me

share Knowledge = increase Knowledge
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File Type: jpg help.JPG (45.4 KB, 326 views)

Last edited by soy; 02-17-2008 at 12:09.
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Old 02-17-2008, 12:50   #11 (permalink)
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Quote:
Originally Posted by soy View Post
hi dears i have k750 which is not attaching with Cruser. I have also used SE Tools Finally i found following ic is not working correct. Is that any person which can give me jumper of following ic pleas help me

share Knowledge = increase Knowledge
Try the following jumpers :

Best.Regrads
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Old 02-17-2008, 13:00   #12 (permalink)
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Bro try to change N2801 & N2302...............
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Old 02-21-2008, 21:50   #13 (permalink)
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Try the following jumpers :

Best.Regrads

dont work any other slution plz
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Old 02-22-2008, 12:16   #14 (permalink)
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dont work any other slution plz
Then your problem resides within Max 2801 (Usb/serial switch)..replace it

Best.Regards
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Old 02-22-2008, 12:53   #15 (permalink)
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Here is a picture on this IC.....
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