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in this case study i am using dc supply to remove 19v line short circuit in short circuit case dc power supply becomes handy to find the exact short component to do the job set dc power supply to lower voltages like 0.5 or 1v...not more then that in dead short conditions then inject voltages of dc s...

Put snaps off your motherboard ...

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Great Job sir

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Good job sir

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Dell 3521 laptop
board part no. la-9104p
+3valw short ...
attached is a case study of dell 3521
which explain how to use dc power supply to find the shorting in laptop

dell 3521 case study by swanand
Regards
Swanand

fRIENDS find the below snap of mbx 224
make changes as mentioned in snap to replace ATI 216-0728014 WITH 216-0774007 100 % tested by Swanand

enjoy

Great job sir

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Acer La-7912p
Power on no display
No vcore
All other other voltages present
amps was 0.200

Fount 5vs voltage was low only 2.3v due to R372 20k reg was miissing and track of reg was also missing
place Reg of 20k and build solder pad for it
system is fine now

Received lenovo b460 not charging board part no is[glow=red]la46[/glow]

found liquid split near charging ic two tracks open
rebuild track ...two caps bad...replace caps
system is fine now[/img]

Search found 19 matches

how to use dc supply to find short component on motherboard

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