LED bulb PCB after failure

I have no idea how the PCB got this effect.

124 points · 16 comments · view on lemmy.world

16 Comments

nottheengineer@feddit.de · 11 pts · 3y (1 reply)

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@lemmy.world · 1 pts · 3y

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.

jaamesbaxterr@lemmy.world · 8 pts · 3y (5 replies)

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

umulu@lemmy.world · 6 pts · 3y (4 replies)

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@lemmy.world · 7 pts · 3y (3 replies)

Baked in it's own heat?

mun_man@lemmy.fmhy.ml · 1 pts · 3y (1 reply)

Traces seem ok, maybe wicking enough heat away?

DoomBot5@lemmy.world · 1 pts · 3y

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

mun_man@lemmy.fmhy.ml · 1 pts · 3y

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

Hiru@lemmy.world · 5 pts · 3y (3 replies)

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

eating3645@lemmy.world · 10 pts · 3y (2 replies)

How do you know when it fried?

Hiru@lemmy.world · 4 pts · 3y
(ง •̀_•́)ง
umulu@lemmy.world · 1 pts · 3y

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

june@lemmy.world · 2 pts · 3y (2 replies)

That’s a pretty significant failure, Jesus.

Nahaelem@lemmy.world · 3 pts · 3y (1 reply)

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

umulu@lemmy.world · 2 pts · 3y

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.

Bleach7297@lemmy.ca · 1 pts · 3y

Triggers a weird kinda trypophobic response for me. Yech