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04-23-2007, 21:32
| #1 (permalink) |
| No Life Poster   Join Date: Aug 2005 Location: singapore Age: 55
Posts: 2,430
Member: 173565 Status: Offline Thanks Meter: 71 | n70 positive contact shorted phone seen very good no corrosion . asap thank you for reading |
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04-24-2007, 00:40
| #3 (permalink) |
| Banned  Join Date: Apr 2005
Posts: 24
Member: 141210 Status: Offline Thanks Meter: 0 | power with power supply and verify the temperature of components, use limiter of current to 500 mA. In most cases have a diode in paralel with power supply line, to protect angainst inversion of polarity, and this diode be shorted. |
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04-24-2007, 06:22
| #5 (permalink) |
| No Life Poster  Join Date: Aug 2005 Location: SILIGURI Age: 46
Posts: 828
Member: 170589 Status: Offline Thanks Meter: 1,848 | easy and simple way is if any ic short than it must be heated it might be that it would not heat upto burning level, initally put the hard flux on the doubtful component connect the handset to the power even with charger after few minute you will find the hard flux is melting on the component which is heating. now the problem solve remove the component and measure. |
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04-24-2007, 07:12
| #6 (permalink) | |
| Junior Member Join Date: Apr 2007 Location: gujarat
Posts: 2
Member: 494698 Status: Offline Thanks Meter: 0 | Quote:
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04-24-2007, 11:42
| #9 (permalink) |
| Freak Poster  Join Date: Mar 2007
Posts: 262
Member: 461058 Status: Offline Thanks Meter: 8 | Is it a complete short circuit like 0 Ohm ? or is it just a high consumption ? Check the thing with the flux at the RAP3G Or even put the phone on 6V then hold the power on button then check with your finger which ic is heating ! I'd say it's about the RAP3G but check around where you seen some water damage ! Regards Jack |
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04-30-2007, 19:38
| #11 (permalink) |
| Freak Poster  Join Date: Jan 2006 Location: UAE Age: 43
Posts: 434
Member: 227127 Status: Offline Thanks Meter: 241 | if the handset shows 0 ohms in battery terminals, may be any of the components that connected to battery (+) terminal get shorted to ground. 1.PA-N7502 2.PA dc/dc convertor-N7504 3.HINKU-N7500 4.VINKU-N7501 5.CAMERA REG-N1472,N1470,N7505 6.dc/dc convertor for flash light-N1471 7.LED driver-N2301 8.TAHVO-N2300 9. APE REG-N4201 10. SMPS-N4200 11. RETU-N2200 these are the components in N70 which connected directly to battery, Last edited by reji; 04-30-2007 at 19:52. |
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