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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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03-30-2011, 22:24 | #1 (permalink) |
Junior Member Join Date: Aug 2010
Posts: 26
Member: 1374054 Status: Offline Thanks Meter: 14 | basic way nokia short circuit find out you have to collect same model schematic..(if available) sometime parts conected with bat +ve (due to many reason) get short ...then multimeter show(reading) short. some parts are directly conected with bat +ve terminal and some parts are conected via some small coils(+ve supply/).also some coils(+ve supply series coil) are conected throuh +ve supply coils. here i am show you the coils conected with bat +ve terminal.. here is my sample with 6303i rm-638... OPEN SCHEMATIC...... click at zoom.... click next again... now the coils are marked...(red circle) here is the fbr vbat conected part.... Free File Hosting, Online Storage & File Upload with FileServe now find the part(s) which directly conected with vbat +ve here is my sample with 6303i rm-638... some pert(s) are directly conected with vbat +ve.... see the image...the green and blue marked part(s) are directly conect with vbat +ve terminal.... remove or open L2080...if short remain in battery +ve terminal check all capacitors(change if short)in green mark. if capacitors are ok then finally need to change one after N5702 or N5701 mark in blue. now the part(s) are marked.... |
03-30-2011, 22:25 | #2 (permalink) |
Junior Member Join Date: Aug 2010
Posts: 26
Member: 1374054 Status: Offline Thanks Meter: 14 | now find the short part(s) or section.... if you have doubt with any particular section!!! here is my sample with 6303i rm-638... see the image.. 1.open or remove L1400(+ve supply coil)... if short remain in battery terminal it mean this section is clear(no short in the section). so we have to go another part or section. 2.open or remove L1400(+ve supply coil)...if found short between L1452(+ve supply series coil) to grownd 1st you have to check the green mark capacitors(replace if short).if capacitors are ok then finally need to change N1450. now the part(s) are marked... by this trick i check short circuit in PCB ---------------------------------------------------------------------------------- NOW FIND THE PART IN PCB here is my sample with 6303i rm-638... i am going to find location of coil L2130 in pcb.. SEE THE IMAGE.. the block C4 is the cross section of the graph(for L2130) here is the my fbr find the part... Free File Hosting, Online Storage & File Upload with FileServe |
The Following User Says Thank You to bigboyb For This Useful Post: |
05-26-2014, 21:07 | #5 (permalink) |
Freak Poster Join Date: Dec 2012 Location: SOUTH AFRICA
Posts: 231
Member: 1853465 Status: Offline Sonork: 100.1659145 Thanks Meter: 20 | thanx nice post Thank u for sharing,but i like to ask is these the same method to check short on other brands,like samsung ,lg,sony or is the method for nokia only thanx |
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