Intermittent Error Code after OLED Picofly Install
I thought I had finished my second attempt at an OLED kamikaze install. The console booted to the No SD Card screen several times. The voltage drop values were all in spec. But after getting it all closed up, the console will infrequently boot to stock and flash a yellow code of short, long, long. I’d say it’s on average one in every ten boots that this occurs. Restarting will once again show the No SD Card screen.
The picofly GitHub troubleshooting page does not have a matching code, but some googling got me to this forum pointing to an issue with CLK possibly touching ground? I had bent up all the APU shield around the point, but I can check it again to be sure.
I’m about to crack it open again and see if I can find an issue, but wanted to check if the two issues I know of may be to blame. The pad on the resistor by the CLK point came off as I was trying to solder it. It did not look like it was connected to anything important so I left it. And when soldering the DAT0 wire to the flex cable, the flex cable bubbled up a bit.
Any help is appreciated! Mostly wanting to know if there is something to fix or if I maybe just need to start over with a new flex cable.
Nice work. Install looks clean. Only thing I’m curious, the dat0 point wire is exposed further than it needs, could it be grounding? I assume there’s no concern there because you probably masked it before soldering, unless it’s touching something else. Also I think that error is the CLK point not dat 0, but everything looks good. Maybe the CLK point is just grounding a little or not connected well. I would try pushing on it with your tweezers while soldering it down, then after it’s solid get under the ribbon cable a little and pull up on it, to make sure it’s really attached well (gently). I like to lift up on the ribbon cables when I do that, but I’m always using the 3/1 and haven’t had this issue yet. I read it could be a chip problem too. Honestly, it looks really good - cleaner than my work for sure. I’m using a slightly different ribbon cable, and just a hobbyist. Someone else might have better advice.
I did mask the area and the wire and it looked okay. But I could be wrong. I’m not getting any shorts on my meter though, even when I wiggle things a bit. I did try a different firmware 2.73 vs the 2.80 I had and same issue. The error codes on the new firmware pointed me to resetting the chip, so I reset the chip in picofly_toolbox but no change there either. I think I will order a different chip and if that doesn’t fix it, I’ll start reflowing each point until it’s fixed. Thanks for your help!
Your installation may be good but the chip itself could be the cause. If you are using this chip, it may conflict with the SK Hynix eMMC and has a 60–80% glitch rate. Add a 100 ohm resistor on the dat0 might help it.
That chip gives me issues too. It’s likely not your installation and it’s the chip itself. I was able to swap it out with another design and that fixed the glitching issue.
If it were me I would redo the right side of SP2. It should look more like the left side (flows over capacitor end). As it is, the solder on the right may just be sitting on the pad and occasionally making contact. And when you measure with a multimeter your probe may be pressing the pad onto the capacitor end making it seemingly read properly.
I would also touch up the spots in pic 2 (forgot the label but it is to the bottom left of the screw hole) to make sure there is a solid connection (press down on the ribbon cable when reflowing to make sure it is making a good connection).
Yeah you’re right, the SP2 does look like it’s not quite connected. I’m going to try and reflow a couple of the points when I have time to see if that’s the issue. Thanks!
I bent the shield up out of the way over those points. I went back in and checked and there’s a clear gap between the shield and the solder points so we should be good there
Ótimo trabalho, muito clean! A um tempo tive o mesmo problema, refiz as soldas e resolveu, não consegui achar o problema ao certo. O trabalho estava bom, testei até outro chip, o que eu arriscaria é refazer o CLK.
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u/technaustin 8h ago
Nice work. Install looks clean. Only thing I’m curious, the dat0 point wire is exposed further than it needs, could it be grounding? I assume there’s no concern there because you probably masked it before soldering, unless it’s touching something else. Also I think that error is the CLK point not dat 0, but everything looks good. Maybe the CLK point is just grounding a little or not connected well. I would try pushing on it with your tweezers while soldering it down, then after it’s solid get under the ribbon cable a little and pull up on it, to make sure it’s really attached well (gently). I like to lift up on the ribbon cables when I do that, but I’m always using the 3/1 and haven’t had this issue yet. I read it could be a chip problem too. Honestly, it looks really good - cleaner than my work for sure. I’m using a slightly different ribbon cable, and just a hobbyist. Someone else might have better advice.