I have the same problem.
I' ve bought a couple of RPi from RS and tried both with the same SD.
One of them randomly hangs after some minutes while the other is running fine from last thursday night.
I' ve phoned to the italian RS and they said me that the board can be easily substituted with no charges since it is covered by a one-year warranty, and there's no need to post the board back, but just pack it again and a RS man will pick my RPi at my home.
I read in this forum that the fuse could be the problem, I think that measuring the voltage drop across it could give some indication, and also to record the serial no. of the faulty RPi and to check if the production lot is the same.
I go to pack again my RPi.
That's an idea ... I might give that a go after some thought, but I don't want to contaminate my own oven, so probably try a toaster oven, and I'm afraid it will probably destroy the connectors (so probably watch the duration somewhat). With any luck, components don't fall off the board as well and or the components on the bottom get stuck to something ... (i.e. what's the best orientation, need to prop it up, make sure oven isn't fan-forced or it might blow something off.)Dilligaf wrote:If you've given up on the warranty you could always try baking it in the oven at 400 for 10 minutes, or heat it with a heat gun. This may have a detrimental affect on the polyfuse but you could always bypass it or power from the gpio. Baking/heating it should reflow the solder if it's a bad solder joint. You've really got nothing to lose if returning it isn't an option.
Thanks for the read and comment - I concur wholeheartedly, however, I guess the fact that it was ultimately "fixable" is much better than an entire waste. I've managed to actually get packages installed, configured, and the thing overclocked to 950Mhz too. A definite success compared to what it was before.mahjongg wrote: The only pity is that you needed to do this at all.
I agree, baking it may not necessarily make a long-term repair, especially with improper temperature profile which may make bad brittle joints, and reflowing solder which has already lost its flux and may oxidise further. But it's worth a shot in my case, and it did the trick, even if only in the short term. Better than nothing .drgeoff wrote:This is beginning to look like a problem with the soldering of the BGA SoC to the PCB. Although baking may effect a cure, I would be concerned about the long term reliability of such a "repair".
Could this be a contributing factor to the ' temperature' issues being experienced here?I have discovered that there is a problem with the USB circuity. When-ever the device is touched on the USB controller (IC3), the device resets every thing attached to the USB circuit. When any device is removed or plugged into the device, the whole Raspberry Pi resets.
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