Hello,
I put together a Picocalc and after powering it up there is a vertical cascade of lines as pictured.
(moved everything from case to rule out anything interfering)
Behavior occurs whether powered by battery or USB C. The battery(s) are Nitecore NL1834 if that matters. Sometimes the intensity of the lines brighten if I leave it on for a moment but I usually turn it off quickly in case it’s just cooking.
If I blow away the PicoCalc firmware, by uploading Blink or etc to the Pico H, the backlight will turn on, but it will not display the lines, or anything (since it’s brainless after all). I’ve since re-uploaded Miny-Mite. Probably unrelated but I can connect via tty, run print “hello” and that works fine, also Pico keypresses work.
I read a lot of posts about the display being fragile and it’s possible I’m just breaking them. At first glance they do not seem to have physical damage.
But I found it odd two screens fail in nearly the same way, could there be something wrong with my board?
Thanks and certainly.
I almost did actually, but I was afraid because the right side looks like it’s not plugged in but it’s a shadow covering the registration mark on the board.
Alright gamers, got a new screen & board, I plan to tape the screen in place to the casing with gaff tape, as other screen tapers have done in these threads
Will try the new board w/o a Pi installed (it should do mbasic right?) and if that works I’ll remove the board from the case to install a Pi 2w.
Just posting in case there’s anything else obvious that I should do, let me know! I like to think I’m kind of careful but also cannot prove that I’m not just breaking these things so I’m down for anything.
So it could have been the board or the screen. My first thought is to switch components around and isolate it to a prior screen/board but I’m so fried on the idea of fragile displays, and/or me perhaps breaking them, I just want to leave it as-is for a bit.
About the display tape, I don’t know about everyone else but i felt like any tape on the back of the display touched the board and maybe created an uneven pressure on it. I wound up using much less tape and in a way that just barely contacted the sides of the display to keep it placed while installing the board, but while contacting the board as little as possible.
Looking for forward to playing around now, I’ve had this for months but haven’t really had it usable yet.
