Replacement for a bad 8-pin Mosfet on Laptop motherboard

sabrix

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Dec 28, 2010
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i have a Lenovo y50-70 non 4k non touch which is my main work computer (post processing) stopped working because of some AC problem when the charger was detached then attached, wont turn on anymore, no indicating lights whatsoever even for battery charging,
tried to see if the juice is reaching and turned out that one transistor MOSFET was dead, see picture here.

the problem is finding a replacemen that meets the characteristics of which,
click here for the datasheet (specs)

i found one similar on http://ca.mouser.com but the gate leak was -20v instead of VGS = ±25V..
im not a pro when it comes to this so i would appreciate some help on how or where to get a similar MOSFET,

Much appreciated
 
Solution
Considering these things usually fail to a dead short while running full-tilt at 100% (every mosfet I've had fail has done so at full load, usually while doing a final burn-in stability test such as IntelBurnTest or Prime95 right before releasing the machine to production) and yet rarely seem to damage anything else when they do, I'd say most VRM circuits are not going to be too sensitive to such minor differences in specs, and even if it turns out to be important is still unlikely to damage anything so I'd give it a try.

Just make sure it's the same type of transistor and the specs are as close as you can easily get. These things are usually a pain to remove because the whole body is soldered to the board for heatsinking so be...
Considering these things usually fail to a dead short while running full-tilt at 100% (every mosfet I've had fail has done so at full load, usually while doing a final burn-in stability test such as IntelBurnTest or Prime95 right before releasing the machine to production) and yet rarely seem to damage anything else when they do, I'd say most VRM circuits are not going to be too sensitive to such minor differences in specs, and even if it turns out to be important is still unlikely to damage anything so I'd give it a try.

Just make sure it's the same type of transistor and the specs are as close as you can easily get. These things are usually a pain to remove because the whole body is soldered to the board for heatsinking so be prepared to use a lot of heat.
 
Solution
Thank you! That really pushes me forward to give it a try instead of buying an $400 motherboard or a whole new workload laptop,

I have found the exact same ship , from the same company , found it on an eBay listing for $1 each and ordered 4.

Just in case someone else encountered the same issue here's the link to the seller who also has a wide variety of similar items .

http://stores.ebay.ca/e-best-trade

Please don't hesitate throw any additional advices regarding the FET switching process.

Very much appreciated!