Fixing a USB 3.0 Hub

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I've recently ordered a generic USB 3.0 hub from Ebay for under USD 5. As it turns out, I received a faulty unit. Whenever I've plugged the hub into my PC, Windows reported a power surge on that port. Seems like a short circuit somewhere in the hub.

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Repairing a Dead Motherboad Due to Shorted Mosfet

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I've picked up a dead mobo for under 5 bux. The board in question is an MSI 785GTM-E45 AM2+ mother board. After some quick diagnosis, I found that there was a short on the ATX12v rail. One of the VRM phase high-side FETs were toasted. Measured a short across the gate and source pins.

The each phase has the FETs in pair configuration, so 50% chance that both were toasted, 50% chance that only one was toasted and 50% chance of removing the good FET. I had the later one. The mosfet is an N-ch Niko Semi P0603BD. I don't have an exact replacement part in my junk bin but had something close to it.

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Raid card fan mod

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I received these 2 raid cards, LSI 8344ELP and PERC H200 from a friend of mine. The heat sinks on this cards can get really hot as they are meant to be used on a workstation or a server with high volume of air passing through them.

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Fixing a bad HP L1902

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2 days ago my dad brought back a HP L1902 monitor. It was still functional except its Dsub connector got chopped off. Seems like it was saved from its fate of ended up in some landfill in some 3rd world country somewhere.

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Trying out USB 3.0 hard drive

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Well, call me late into the USB 3.0 but I've finally pick up an external drive after my internal sata hot-swap bay started killing off drive after drive.

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