My working theory is that they popped off during a fall. I don't overclock it. There is also frankly no way that the components got hot enough to desolder themselves. Just no way! The mounting pads for the missing parts look like fractured surfaces anyways, so let's just assume that they popped off during some mechanical trauma. Knowing the power supplied to the parts does NOT tell me the value of those parts. Thanks for trying to help, anyways.Squirrel61 said:I have a F200 myself, so I can't help you with values. Only thing I can do is confirm that the C's are capacitors and the L is an inductor. Since they've been placed closely together, I assume they're part of one of the power circuitries in the F100. The F200 has 4 or 5 for different voltages and I guess the F100 also has some.
Since the components are gone, they must've been gotten very hot, at least hot enough to desolder themselves. So possibly there could be another problem hidden in your F100, making it draw too much power. Or are you overclocking on a regular base? This could also cause overheating, since an overclocked unit will draw more power, possibly more than what the circuitry has been designed for. Considering the parts fell of at soldering temperature, they could have molten themselves to another part or to the casing.
Try to locate the power converter that's associated with the parts. It could be a small square IC very close to these parts or even a three pin part. Read the text printed on it (usually 3 or 4 letters) and use google to convert it to an actual part. You may post the text if you can't find anything and maybe I can help.
After you've found out the part number (it's probably from Linear Technology since GPH gets all power parts from them), find a datasheet. It usually has an example application diagram with component values. GPH closely follows these diagrams, so when you follow the PCB traces from the chip to the parts, you must be able to sort out which part has which value.
mtaylor said:Knowing the power supplied to the parts does NOT tell me the value of those parts.
No, but knowing the power converter that's associated with the parts will tell you the value of the parts. During my investigations on the F200, I've found that the parts surrounding a power converter have the same values as mentioned in the converters sample application diagram. Since there's no reason to change these values, GPH doesn't do that.
atomicthumbs said:I opened up my GP2X to see if I could make the headphone jack work consistently today.
C22 was hanging by a thread and fell off when I touched it.
That seems to support my theory that the components sometimes get hot enough to desolder themselves.
Squirrel61 said:That seems to support my theory that the components sometimes get hot enough to desolder themselves.
Or the more likely scenario - GPH are using a manufacturer that uses unleaded solder and an oven that doesn't have a correct profile, so the solder barely melts, the component holds on by a few balls of solder that actually did melt, and so the component eventually becomes free after the constant heat differences and knocks to the console itself.