Hey folks,
I picked up a Jetway fanless box for cheap recently, but it won't stay running more than 10-15 minutes. As far as I can tell it's an older rev. of this box - I don't have the external antenna jacks:
https://www.jetwaycomputer.com/JBC311U93.html
https://cdn.badcaps-static.com/pdfs/...c0988f1417.pdf
First thought was overheating but CPU temp wasn't really getting above 40C. There was a >0.5mm gap between the CPU die and heatsink, so now after shimming it the CPU stays around 25C on all cores and still has the reboot issue.
I've swapped RAM out, removed the onboard MSATA drive, and removed the wifi card. This happens no matter if the machine is booted into an OS or is just sitting in BIOS - still reboots every few minutes.
I've also tried multiple power supplies. It has a 9-24v input range, and the same behavior on a 12V AT supply I have on my workbench and a 16.5V IBM laptop adapter. Both should have adequate current capacity (>3A) for the board as far as I can tell and should have fairly clean power. (Caveat - haven't put my scope on the power lines yet. And don't have a digital scope that can trigger/capture.)
I'm a bit at a loss as to where to start, beyond watching power rails. Anyone else seen similar issues or have experience with these boards? Don't see much for Jetway in the search.
I picked up a Jetway fanless box for cheap recently, but it won't stay running more than 10-15 minutes. As far as I can tell it's an older rev. of this box - I don't have the external antenna jacks:
https://www.jetwaycomputer.com/JBC311U93.html
https://cdn.badcaps-static.com/pdfs/...c0988f1417.pdf
First thought was overheating but CPU temp wasn't really getting above 40C. There was a >0.5mm gap between the CPU die and heatsink, so now after shimming it the CPU stays around 25C on all cores and still has the reboot issue.
I've swapped RAM out, removed the onboard MSATA drive, and removed the wifi card. This happens no matter if the machine is booted into an OS or is just sitting in BIOS - still reboots every few minutes.
I've also tried multiple power supplies. It has a 9-24v input range, and the same behavior on a 12V AT supply I have on my workbench and a 16.5V IBM laptop adapter. Both should have adequate current capacity (>3A) for the board as far as I can tell and should have fairly clean power. (Caveat - haven't put my scope on the power lines yet. And don't have a digital scope that can trigger/capture.)
I'm a bit at a loss as to where to start, beyond watching power rails. Anyone else seen similar issues or have experience with these boards? Don't see much for Jetway in the search.
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