128x64 OLED very dim

[sp1d3r]

A couple weeks ago I purchased a 128x64 Featherwing OLED display (https://www.adafruit.com/product/4650). It was working fine for the first week, but yesterday appeared extremely dim/illegible (see attached). As I tried different display patterns, is also appears some of the pixels have significant burn-in in the shape of text that I had originally programmed on the display during the first week when all was working (see the dim extra pixels in the Adafruit logo below). As of today I can't see anything on the display.

I have tried reflowing the headers as well as testing with the demo sketch (https://learn.adafruit.com/pages/20209/ ... d?type=zip), but am getting the same behavior. Searching through the forum, I am thinking I may have an early life defect on my panel. Any other suggestions?

feathewring_oled1.jpg (938.18 KiB) Viewed 507 times

feathewring_oled3.jpg (809.96 KiB) Viewed 507 times

feathewring_oled4.jpg (836.34 KiB) Viewed 507 times

[adafruit_support_carter]

For the week it was in use, how long was it left constantly on?

[sp1d3r]

It was left on for maybe ~30 min at a time, over 3 or 4 sessions. So cumulative on-time of a couple of hours I would estimate.

[adafruit_support_carter]

This looks very similar to the behavior seen here:
viewtopic.php?f=57&t=184282

Let's wait a bit and see if that person responds. Since there are now multiple cases of this, we should rule out any potential software issue.

[sp1d3r]

Thanks for the link -- that indeed looks like exactly the same issue I have seen. As that user mentioned, my display also got progressively dimmer over the first day after it initially stopped working correctly. Now I am unable to see anything at all on the display. Given we have both tried multiple sketches and have the same issue I'm assuming this is a problem with the hardware.

[adafruit_support_carter]

Let's go ahead and replace your hardware. Even if this is something software related, it may be a while before it can be fully determined.

Send an email to [email protected] with a link to this thread and your order number and they can send you a replacement OLED FeatherWing.

[sp1d3r]

Just to follow up -- I received the replacement several days ago and have been using it without issue thus far.

[adafruit_support_carter]

Thanks for letting us know. If the same behavior shows up on the replacement, please let us know. We'd be interested in a case where two of them do the same thing.