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2.2 pitft screen problems
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2.2 pitft screen problems

by darkmoon3d on Sun Feb 25, 2018 6:27 pm

I received several new pitft 2.2 screens to replace ones previous that are not working and am having same trouble with white screen and non-functionability. My records show that I've bought 7 this year and 8 additional in past. Of the total 15 total, 5 have not worked which were all from this year alone. I've gone through much trial and error recently to determine if faulty soldering is to blame and am not finding any problems. Looking at message forums have shown that there have been numerous recent problems with this screen model.


Of screens I have with me at moment was able to put list of numbers labeled on back of screen:


Fails:
5117
5117
5117
4717
5117


Works:
4717
5016
3817
3817
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Re: 2.2 pitft screen problems

by Daniac on Sat Mar 03, 2018 6:46 pm

Wish I had seen this before I ordered....I'm having a white screen issue too....my solder looks great, software install went fine....still have a white screen.....

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Re: 2.2 pitft screen problems

by tlankila on Wed Mar 07, 2018 3:20 am

I found this thread because of same/similar problem.
Initial purchase of one 2.2 pitft has been working and therefore several new ones was ordered to start producing devices with this display for our customers.
First two has been now soldered and show nothing but the white screen. Soldering has been made by two different people. Soldering has been tested for shortcircuits and soldering has been repeated twice to rule out any problems from that part. Displays tested with different OS images and image/Raspberry Pi verified to be working with the one working 2.2 pitft. Also it should not be the problem that people have damaged the display unit when soldering since more delicate components are handled daily basis by these professional people.

The two non working are marked with this 5117 and all other purchased displays has the same number on the back.

I have halted soldering any more displays until this problem has been solved.

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Re: 2.2 pitft screen problems

by sigilvii on Fri Mar 09, 2018 7:00 pm

I am also suffering from the 'white screen of death' on my 2.2" PiTFT screen from the Adafruit PiGRRL Zero kit (my post). I'm still looking for a solution.

My PiTFT is marked '4717'. One of these is in your list of bad screens. Maybe there are some bad batches that went out recently?

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Re: 2.2 pitft screen problems

by tlankila on Tue Mar 20, 2018 6:50 am

Progress so far is that 30% of the displays do not work properly
I'm still waiting response from Adafruit what can be done.
Luckily meanwhile we have been able to get information which might help Adafruit to find the root cause for their problem.

Turn the power on. Wait 10 seconds. If the display stays white turn off the power.
Repeat this about 10-30 times and you get the screen working (I don't know yet for how long)
This method worked for 2 out of 3 displays.

Can you others who has similar problem try this method of turning power off and on too se if it helps?

If it's any help for Adafruit here's also photo of a backside of the display itself.

ADAFRUIT PLEASE REPLY AND COMMENT:
Have you been able to figure out what the problem is that you have with these displays? (I have already ruled out that the problem is not soldering nor the OS/SW)
Is it safe to purchase any more displays from Adafruit? (So far we have halted purchasing any additional Adafruit displays)
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Re: 2.2 pitft screen problems

by adafruit2 on Tue Mar 20, 2018 12:04 pm

not sure, something seems to have changed but not sure what. we're going to check out the inventory - we haven't changed any of the design or components in years...

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Re: 2.2 pitft screen problems

by darkmoon3d on Mon Mar 26, 2018 4:29 pm

Just received 5x 2.2 Pitft's last week and tested today. Three work and two don't. As again, one's not working are marked 5117 while functioning are 4717.

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Re: 2.2 pitft screen problems

by sigilvii on Mon Mar 26, 2018 4:36 pm

Hi Darkmoon, do you buy these kits and assemble them on a regular basis? I ask because if you have not had issues with these screens in the past, you could pinpoint when they started to fail for you.

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Re: 2.2 pitft screen problems

by darkmoon3d on Mon Mar 26, 2018 4:56 pm

Have not been having problem assembling pitft's last year. Problems only began early this year. Am assembling each exactly the same and testing with same hardware and Rasbian image. The five listed today were all assembled yesterday.

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Re: 2.2 pitft screen problems

by sigilvii on Mon Mar 26, 2018 5:06 pm

Thanks! That's useful info. My screen failed to work, but I only had the one data point.

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Re: 2.2 pitft screen problems

by tlankila on Tue Mar 27, 2018 1:00 am

darkmoon3d wrote:Just received 5x 2.2 Pitft's last week and tested today. Three work and two don't. As again, one's not working are marked 5117 while functioning are 4717.


Have you tried my instructions to get them working temporarily?

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Re: 2.2 pitft screen problems

by adafruit2 on Thu Mar 29, 2018 4:30 pm

hiya, we're having some difficulty reproducing the issue.
just so we're all totally on the same page and to help debug (we dont want to send you another one if its going to *also* not work).
if you have a 'bad' display please reply

1) did you *ever* see it working
2) what is the 4-digit datecode marking on the bottom (e.g. 0417)
3) if you have your packaging still, whats the work order #, its below the barcode, e.g. W6230-A
4) please try making a fresh copy of Jessie Stretch Lite (raspberrypi.org/download) and run this https://learn.adafruit.com/adafruit-2-2 ... sy-install select `2.2" TFT`, "90 rotation" and "Console on PiTFT" then "Y" to reboot, does it work at all now?

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Re: 2.2 pitft screen problems

by adafruit2 on Mon Apr 02, 2018 11:10 pm

darkmoon are you still on this thread?

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Re: 2.2 pitft screen problems

by tlankila on Tue Apr 03, 2018 1:53 am

I was able to find 6 out of 10 bubble wraps for those displays. All have W6034-A. I'm unable to tell if any of those are for sure for the non working ones.

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Re: 2.2 pitft screen problems

by darkmoon3d on Wed Apr 04, 2018 10:52 pm

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


Order #1649483-7106012946
January 12, 2018
(2x) 2.2 pitft

Order #1664040-4502733052
January 28, 2018
(2x) 2.2 pitft

Order #1668283-1441106097
February 1, 2018
(1x) 2.2 pitft

email contact
Feb 5, 2018

I recently bought two pitft 2.2" screens (1664040-4502733052 ) and
after soldering header and pins am finding both screens don't work (one if
fuzzy and black/white and other is only showing white screen). Bought one as
replacement to another screen I bought earlier (1668283-1441106097 ) which
also did not work. Is it possible I could return these in exchange for new
screens? I have bought this screen in the past with no problems until now.
Assumed I might have made mistake mounting header until I found that three
screens in a row have failed. Tested these screens plugging them into nine
pi zeros and against four other screens I've purchased in past. Only the
recent three are failing.

Order #1675377-0316666670
February 9, 2018
(2x) 2.2 pitft

email contact
Feb 19, 2018

I received several new pitft 2.2 screens to replace ones previous that are not working and am having same trouble with white screen and non-functionability. My records show that I've bought 7 this year and 8 additional in past. Of the total 15 total, 5 have not worked which were all from this year alone. I've gone through much trial and error recently to determine if faulty soldering is to blame and am not finding any problems. Looking at message forums have shown that there have been numerous recent problems with this screen model.

Of screens I have with me at moment was able to put list of numbers labeled on back of screen:

Fails:

5117
5117
5117
4717
5117

Works:

4717
5016
3817
3817


Order #1707252-7298359052
March 13, 2018
(5x) 2.2 pitft

Digikey order
3/27/2018
(3x) 2.2 pitft
4717 - works
4717 - white vertical line
5117 - doesn't work

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Please be positive and constructive with your questions and comments.