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2.2 pitft screen problems
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Re: 2.2 pitft screen problems

by tlankila on Thu Apr 05, 2018 1:04 am

darkmoon3d wrote:Sorry didn't get back earlier. This is what I've managed to find from records

I think they were asking this code from the pink bubble wrap packaging.
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Re: 2.2 pitft screen problems

by darkmoon3d on Thu Apr 05, 2018 2:41 pm

Managed to find following tags but unsure which 2.2's they came with.

W6034-A
W5874-A
W5874-A
W6034-A
W6034-A
W6034-A
W6034-A
W5874-A
W6034-A
W5874-A
W5874-A
W5874-A
W5874-A
W6034-A

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Re: 2.2 pitft screen problems

by adafruit2 on Fri Apr 06, 2018 1:28 pm

ok darkmoon, since you've got the most boards and they're well documented, lets do an RMA so we can get these in house. that way we can tell whats up with 'known bad' TFTs (so far we've just taken ones from stock and they've all worked)

please email support@adafruit and ask for an RMA "FORPHIL" and they'll give you a return label. once we've got these in hand we can do some analysis! (fun :)

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Re: 2.2 pitft screen problems

by adafruit2 on Sat Apr 14, 2018 10:49 pm

darkmoon, your boards really helped! we were able to figure out the issue

to keep it easier for us to track this issue, please see:

viewtopic.php?f=50&t=132799&p=665628

thanks!

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Re: 2.2 pitft screen problems

by tlankila on Mon Apr 16, 2018 1:37 am

I can confirm that our products were as well with that component.

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Re: 2.2 pitft screen problems

by jamescbury on Sun Nov 11, 2018 11:42 pm

Hello - I'm running into the same problem. I also had a couple of snags with the install where the archive files were not available for fbcp. I eventually found them and was able to complete the build manually. I'm not sure if that is why I'm getting the white screen, but I've tried everything I could think of to fix.

My screen is actually white for about 30 seconds while the pi is booting up, then turns black... I'm hoping to use these in bulk for a design I'm working on, please let me know if anyone has found a fix.

Order number: 1884899-8220278280

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Re: 2.2 pitft screen problems

by adafruit2 on Mon Nov 12, 2018 1:07 pm

hey james this thread is really old - so its not clear that this is the same issue you're seeing, can you look for that transistor, do you see the markigns?

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Re: 2.2 pitft screen problems

by darkmoon3d on Mon Nov 12, 2018 1:16 pm

There was a bad batch of 2.2 screens earlier in year. Maybe contact adafruit with info on screens to try to get an exchange. Otherwise have you tried cutting the trace on back for pin 18? This can conflict with other items plugged in. Especially the bno055 imu which took me awhile to figure out.

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Re: 2.2 pitft screen problems

by jamescbury on Tue Nov 13, 2018 9:52 pm

adafruit2 wrote:hey james this thread is really old - so its not clear that this is the same issue you're seeing, can you look for that transistor, do you see the markigns?


Hi I just checked, looks like I have the V87PA. I can try cutting the trace to pin 18 as suggested by darkmoon.

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Re: 2.2 pitft screen problems

by adafruit2 on Tue Nov 13, 2018 10:57 pm

then yours is ok, like it isnt the same issue. please start a new thread since its a different issue

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