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I ended up removing my FET fix, it looks like it can’t handle the current, I’m looking for another suitable replacement.

I suspect it is more likely blown mosfets but not really sure how to test. Originally Posted by crashZ. My card was an eVGA gso. I like to know why and preferably that I caused it thanks Mark. I replaced one of the power FETs, and it booted right up. I doubt it’s the VPU, but if it is, check this thread out for a theoretical fix: I have got some old AGP cards including a Geforce Ti and a Radeon they have similar looking mosfets on but I don’t know if they’d work or be compatible and since i dont have a heat gun I cannot even take them off.

Swapped graphics card and pc works fine. As far as replacing the FETs, they’re generally n channel. I’d start by using your multimeter to probe the legs of each fet.

Is there an alternative I can use for this mosfet? All times are GMT This all of course assumes that the problem is what I described.

The replacement I found was similar zpm2509n specs, but obviously isn’t up to the task. So I will need both type of fet: Apm n I just bought a new DELL SW monitor and apj2509n using it with my old Geforce for about 2 hours on my pc when I put on Call of Duty and suddenly when the game resolution changed the screen just remained black, I restarted the machine and the screen didn’t come on.


APM2509NU Datasheet PDF

If that is the case, you can just replace the FET, and see what happens. Anyways here is the image you requested. It might just post if you replace it. You will probably need a hot air rework station to remove the fet from the board, since there has been solder paste applied to the tab. Im having some problems with finding datasheets: Mine would post, but would crap out and die after a few minutes, with severe heat issues.

Any help would be greatly appreciated. Look up the data sheet, and then use the diode mode on your multimeter to probe from gate to drain, gate to source.

The card is tripping the psu’s over current protection only turns on for a milisecond, have to reset with mains switch. As Largon has said, it’s going to suck if you’re trying to remove the FETs with just a soldering iron, the tabs that are attached to the back of the FET are going to be soldered down to the board, unless you have a hot air rework station, you’re likely going to do more harm than good In this pcb layout would they both be N channel type?

Skill Information and Support G. Skill Memory Products G. I am not happy when stuff just dies for no reson. Also I dont know why this burnt? O it doest stay on long enough to burn anything: Could it be the new monitor? Stacker Watercooled windows7 ultimate 64 bit!!! Found a few problems: Could this be the same issue people were having with nvidia gpu’s in laptops bga solder problems? All others the ohm rises like a capacitor with only a very short bleep. Anyone have a spare APMN?


APMN_PDF Datasheet Download IC-ON-LINE

I will have to get a picture. Q5 and Q6 are k 6k4.

If any fet is conducting low R in both directions, it’s likely dead. I assume the vGPU inductor would be the 1R0 labled component, bottom right of datashfet front pcb picture below between white connector and capacitor. Your DMM should beep or something, but only in one direction gate out, or gate in datashfet, depending on type of fet. It’s tricky to troubleshoot problems like these, because there has generally been something that caused such a “catastrophic” failure.

I just bought a new DELL SW monitor and was using it with my old Geforce for about 2 hours on my pc when I put on Call of Duty and suddenly when the game resolution changed the screen just remained black, I restarted the machine and the screen didn’t come on.

I would really like a suggestion of a replacement, since I really have no idea with fets. I had a similar issue, can you shoot a picture of the board? Results 1 to 22 of Apm n If only i knew which card or devices have apmN on them I would start searching. When I “fixed” my board, I traced back to the fet because of one thing: Originally Posted by Kram.

You were not supposed to see this. This is the same pcb layout, http: O I lifted the inductors – lead was easyer, I hate Jlead smd’s I got ohm on the good phases and on the dead phase. Those fets will be sort of

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