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Monster M4SK Only One Eye Working OOB
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Please be positive and constructive with your questions and comments.

Monster M4SK Only One Eye Working OOB

by hotwire49 on Thu Sep 16, 2021 6:20 pm

I just received my Monster M4SK and when I power it on only the right LED comes on or lights up. If I shine a light into the left one there seems to be an image on the LED so the issue appears to be with the backlight. Is there anything the I can do to attempt a repair or was this defective out of box and needs to be replaced?

hotwire49
 
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Re: Monster M4SK Only One Eye Working OOB

by dastels on Thu Sep 16, 2021 9:33 pm

You can check the display connector on the backlight-less screen. The cable should be straight and fully inserted. The black insert will pull out to let you adjust the cable, sliding it back into place clamps the cable in place.

Dave

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Re: Monster M4SK Only One Eye Working OOB

by hotwire49 on Fri Sep 17, 2021 8:36 am

It appeared fine, but I already tried reseating and it still has no backlight. I can definitely confirm the LCD panel itself works, but the backlight is the issue. I also went ahead and updated the bootloader to the latest and the firmware to the latest just in case there was a software control of the backlight that was buggy, but no difference. I think this is just a defective unit. I was not able to find any datasheets on the screens themselves. Are there any resistors that determine the brightness that I can test to see if there is another cause other than bad screen? Or should it just be replaced at this point?

hotwire49
 
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Re: Monster M4SK Only One Eye Working OOB

by dastels on Fri Sep 17, 2021 10:48 am

Sometimes the backlight is DOA it seems (on displays in general).

Please email support@adafruit.com with a link to this thread, your order number, and request the replacement of one MonsterM4SK.

Dave

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Joined: Tue Oct 20, 2015 3:22 pm

Please be positive and constructive with your questions and comments.