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File and osx/*nix/android mucker-about.


Jun
25
comment Is it likely that replacing usb pcb will fix blown usb port?
There is only one Transistor, based on the labels. Q1 means Transistor 1. D1,D2, etc mean diode 1, 2, etc. Multi-diode packages. Since it looks like a simple two sided board, draw a schematic, and then use a multimeter to test all the parts. If they all work as they should, then its likely to be on the main board. If you trace the usb pins to the connector, see if it goes directly or to other parts. But the board only costs 20 bucks or so from a quick google.
Jun
22
comment Is it safe to power on a motherboard outside of its case?
This varies greatly depending on the board, the cpu, passive cooling, etc. But a fan in a mostly enclosed space has better suction than one in an open space. A wind tunnel in design, to push/pull circulate air over the parts.
Jun
22
comment Is it safe to power on a motherboard outside of its case?
@JasonC and some emf shielding...
Jun
14
awarded  Yearling
Jun
14
answered Can't a USB hub power keyboard and mouse at same time?
Mar
17
comment Dell u2311h Monitor gone bad, which capacitors do I replace?
Whatever you end up doing Ozzy, don't forget to come back to let us know :D
Mar
16
comment Dell u2311h Monitor gone bad, which capacitors do I replace?
@ozzy the voltage rating is a 'max' spec. So it just needs to b higher than the voltage you will see on the line. The trade off is size. The higher the voltage rating, the physically bigger they tend to be. It could be a 1000v cap if that's all you have, but it probably won't fit. So just size it the next voltage up (16 -> 20 -> 24, etc).
Mar
16
comment Dell u2311h Monitor gone bad, which capacitors do I replace?
@ozzy worse, bga is ball grid array, all the solder joints are under the chip. You need an xray machine to properly identify poor joints!
Mar
16
awarded  Commentator
Mar
16
comment Dell u2311h Monitor gone bad, which capacitors do I replace?
@ozzy keep in mind, caps are easily and often counterfieted. Ebay panasonics might not be panasonics, nor the right size or capatitenc or any spec they say they are.
Mar
16
comment Dell u2311h Monitor gone bad, which capacitors do I replace?
@ozzy because the caps are undersized. If the voltage on the line spikes to say 20v, a 16v cap wouldn't be happy. A 24v cap wouldn't care. Dell went cheaper to save a penny or two per board, at the expense of product life time. Its not mandatory, but the voltage rating is a max tolerance spec. Next time go slightly higher voltage as a precaution. The same rated ones will do.
Mar
16
awarded  Supporter
Mar
16
comment Dell u2311h Monitor gone bad, which capacitors do I replace?
BGA and samsung go hand in hand. With dell, its bad caps, 10 to 1.
Mar
16
answered Dell u2311h Monitor gone bad, which capacitors do I replace?
Sep
14
comment Show only odd lines with cat
Just as a note, this shows even lines (where the first line is 1) and odd lines (if you think of the first line as 0). Replace 2 == 0 with 2 == 1 for the opposite.
Sep
12
comment Microscope Camera Driver
USB VID/PID would go a long way in helping.
Jun
28
answered Reading raw data from a microSD card with an Arduino
Jun
28
comment Reading raw data from a microSD card with an Arduino
Is either your computer or your mobile phone not seeing a file system, or the card itself? If two separate devices are saying that they don't see the card, it might be dead. If they want you to reformat it, there might be hope.
Jun
3
comment Identifying Computer parts(3)
@user24527 you can't. Only one accepted answer per question, but you can up vote both.
Jun
3
answered Identifying Computer parts(3)