No display on A06 DevTerm - also, fan not spinning?

DevTerm
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I received my DevTerm about a month ago and assembled it just today - boy, that screen made me nervous trying to get it in, but it all seems to fit together now. Like a few other people’s threads I’ve read, I’m not getting any kind of output to the screen - some seem to have received DOA screens, some broke them during install, some fixed them with some troubleshooting. I’ve tried a few things, and here are my notes:

  • I’ve tested it both with the battery board/batteries installed and disconnected, as well as with the keyboard connected/disconnected
  • The green light on the mainboard does light up faintly when plugged in - if I hold down the button for a few seconds, it gets brighter, which I assume means that something is working. The little heatsink that goes on the A06 board is warming up a bit too.
  • I’m told that the first boot can take a bit, and I’ve let it sit for a good 30 minutes without any change in behavior once I’ve turned it on.
  • The fan on the extension module isn’t spinning at all, including on (what I presume is) boot - I’m reading that it’s only supposed to spin up when certain temperatures are reached, so it’s not a huge deal but I’m not 100% on what the intended behavior is.
  • The ribbon cable connecting the screen to the mainboard feels kinda iffy - I’ve reseat it at both ends a few times now, and it always kind of wants to warp to an iffy angle. There’s no visible damage, and I’ve seen a few videos where other people have a similar complaint and theirs works, so I’m not too concerned about this.
  • Getting the screen in was definitely a challenge - I did end up bending the aluminium shroud around it just a bit somehow. I’m worried I may have damaged the screen, but I’ve broken screens like this before, and typically they either start outputting garbage, develop lines, etc. - I’m not even seeing the backlight turn on.

Is there anything else I can do to determine what’s going on? Any logs I can read off the SD card that’ll show it complaining about not finding an output device?

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You can check with a flashlight if there is something on the screen but no backlight. If so there are ways to fix it like this How to fix Devterm A0604 screen not turning on - #4 by Angr1st

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I have similar issues with my new A06 build. I didn’t find the screen too awfully hard to put in, but, when I power up (on batteries, with or without USB-C power), I get the green light, but the screen shows nothing. Even a flashlight doesn’t show anything on the screen (and I used a very powerful flashlight). And the extension module fan isn’t turning, either. I do feel some heat coming off the core module’s heat sink, so something is working.

There’s nothing obviously wrong with the ribbon cable connecting the mainboard and screen; I was concerned that the battery module going over the top of that cable would squish it, but that appears not to be the case. I reseated the two sides of the ribbon cable, reassembled, and tried again, Still NoGo.

The SD card appears to have a valid filesystem on it when I plug it into my workstation, so that’s not a problem.

Have I got a bad screen, do you think? Or is there something I overlooked?

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I think maybe you can try to remake your SD card with latset image.

I got same issue. I tried with new image SD card. It booted up and running well.

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It was a good thought, but it didn’t help. Still dead. At least I know where to get the latest image files now.

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