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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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03-31-2011, 02:30 | #1 (permalink) |
Freak Poster Join Date: Jan 2010 Location: Cambodia
Posts: 130
Member: 1218675 Status: Offline Thanks Meter: 24 | E71 short 100% (0 ohm) please help my e71 short 100% (0 ohm) i have remove PA and UEM and LED DC Converter and some Condancer but my problem not solved. please help me. |
04-01-2011, 10:58 | #2 (permalink) |
Freak Poster Join Date: Jul 2005 Location: Italy Age: 42
Posts: 146
Member: 164613 Status: Offline Thanks Meter: 11 | The best way to find a short- you MUST have a power supply first. 1. put the voltage to 0 on the power supply and check it is set on the high current (usually 2A), if available 2. connect the phone board, without lcd and flexes 3. rotate slowly the voltage regulator to add voltage, the current consumption will increase, and the board will ger hot 4. check by hand, by fingers WHERE it gets hot 5. if you cant see precisely where is the hot ic, but you find the hot region, tahe the brush wet with your cleaning solution- alcohol or whatever you have and met on that region. The solution will boil on the hottest component. |
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