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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 12-02-2005, 07:37   #1 (permalink)
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3100 on with ufs not with switch


I hvae 3100 on with ufs not with switch anybody have solution ?
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Old 12-02-2005, 14:30   #2 (permalink)
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are you get switching voltage on terminal friend?
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Old 12-03-2005, 03:28   #3 (permalink)
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same 3650 flash ok with on ufs not with switch
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Old 12-03-2005, 05:38   #4 (permalink)
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Quote:
Originally Posted by toy0014
same 3650 flash ok with on ufs not with switch
Try to change the HELGA . sometimes it is the problem.
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Old 12-03-2005, 11:57   #5 (permalink)
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i think first check ur power switch

right side top pin will be ~3V when ope and fall to 0V when depressed.

another problem u may see is very flat battery.

i put power supply ~4V on the battery for some second (untill current draw is ~650mA) then put in phone and connect charger. it will now charge as normal
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Old 12-03-2005, 23:47   #6 (permalink)
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If the switch lines are good then just Reflux UPP & UEM.
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Old 12-04-2005, 14:56   #7 (permalink)
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I change helga and get the result, phone is power on with switch.
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Old 12-04-2005, 17:42   #8 (permalink)
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dave.w is 100% right.................
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Old 12-17-2005, 09:18   #9 (permalink)
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what is helga. and where is the location in the phone. i have same problem. thanks
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Old 12-17-2005, 11:11   #10 (permalink)
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helga is RF IC (it contain haggar IC you know from dct3 plus other stuffs).

you find that on back side of phone, under the middle cage. it is the only ASIC under that cage
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