LED bulb PCB after failure

Bleach7297 , 11 months ago

Triggers a weird kinda trypophobic response for me. Yech

nottheengineer , 11 months ago

Looks like the coating above the traces didn’t quite stand up to the heat over the years.

But it looks nice, maybe we can make PCB art with that.

umulu OP , 11 months ago

That might be it. I was thinking it could the a spike in voltage that shorted the traces. But nothing else got damaged in the house, so it is less likely.

Hiru , 11 months ago

The only thing that failed is the LED at 12 o’clock.

eating3645 , 11 months ago

How do you know when it fried?

Hiru , 11 months ago

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<span style="color:#323232;">(ง •̀_•́)ง
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umulu OP , 11 months ago

Big black spot in the middle of the LED is the giveaway xd

june , 11 months ago

That’s a pretty significant failure, Jesus.

Nahaelem , 11 months ago

Yea, looks like over-volting damage. Maybe the voltage regulator failed. Just my guess

umulu OP , 11 months ago

That’s what I thought. Maybe due to voltage spike in the house. But it is definitely strange. Never seen something like this since I started studying/working with electronics for the past 8 years.

jaamesbaxterr , 11 months ago

Hot climate? Looks like it was baked in the sun for a year or so.

umulu OP , 11 months ago

Portugal. Not that hot in my town.

And the bulb was inside the house the entire time. I was using it for my desk.

DoomBot5 , 11 months ago

Baked in it’s own heat?

mun_man , 11 months ago

I was gonna say the led bulbs I’ve had exposure to get extremely hot. Might have baked the paint

mun_man , 11 months ago

Traces seem ok, maybe wicking enough heat away?

DoomBot5 , 11 months ago

The traces can probably sustain higher heat than that paint. Besides, the hottest part is generally the LEDs themselves.