Molten Madness

It even burned the bottom!

I came home today from work and discovered that my newest clock had quit working.  At first I though that maybe it was a software problem since after all, it was thrown together fast.  I hooked up a serial terminal and found that the software was still running.  Further, I saw that i2c data was still being transmitted.  I pulled out the display board and found the cause of the failure:  The integrated display/driver had burned up and actually melted the plastic lens.  All is not lost as I will be ordering a new one tomorrow.  This time I may try to get the standard version and not the high intensity one I was using.  I’ll leave with a few pictures of the damage:

The display had a smooth plastic lens however now you can see it bulged up.

The display had a smooth plastic lens however now you can see it bulged up.

A better side shot showing the bulge.  This particular display was drawing nearly 100mA when in use, depending on the digits.  The datasheet states that this model defaults to 100% brightness at power on, where as others default to 3% (I think).

A better side shot showing the bulge. This particular display was drawing nearly 100mA when in use, depending on the digits. The datasheet states that this model defaults to 100% brightness at power on, where as others default to 3% (I think).

It even burned the bottom!

It even burned the bottom!

 

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