Am Wed, 1 Mar 2017 23:14:21 +0200 hat Grazvydas Ignotas notasas@gmail.com geschrieben:
Hi,
The weird thing is though that I had aTcs Pyra running throughout the full GamesCom without any crash or problem, and it didn't really need some warming up.
Well mine was also fine just after it arrived, it would boot on the first try and run stable, but then after several days it went into it's current state. IIRC I haven't even changed any software back then as I had no time to mess with it, and there was no abuse on it, it just sat on the table.
Well, that wouldn't be weird for the first batch PCBs. The stencil layer wasn't optimized, so the CPU boards had too little solderpaste and therefore, bad solder joints. Who knows what happens with some heating...
Mine still works perfect since day one (I was lucky), and I had it with me on holidays as well as at the Gamescom and other events.
The reason we didn't ship many boards from the first batch was exactly for that reason: Most of them weren't really reliable. We managed to build four working ones for Gamescom, but that's it.
Assuming Matt's was once fine too it's a bit worrying, I hope it's not something bad happening after the boards get used for a bit.
Well, out of 20 PCBs Nikolaus tested from the current batch, 2 had stability issues as well. Matt's board never really has been tested before. We assembled it, made a quick hardware test for a few minutes, threw it on the ground (to see whether it survives that or not) and then shipped it to him.
What we don't know yes is why these 2 boards have stability issues. We can xray them at GC - but it might also be too much noise on the ground plane combined with different tolerances of both the PALMAS and the OMAP5.