View Single Post
Old 03-05-2019, 12:38 PM   #1 (permalink)
Human Environmentalist
redpoint5's Avatar
Join Date: Aug 2010
Location: Oregon
Posts: 10,380

Acura TSX - '06 Acura TSX
90 day: 28.24 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 28.06 mpg (US)

Chevy ZR-2 - '03 Chevrolet S10 ZR2
90 day: 17.14 mpg (US)
Thanks: 3,603
Thanked 3,862 Times in 2,907 Posts
LED Strip Lights

I've got some cheap weatherproof LED lights that are prone to rapidly failing. First a color stop working at first, followed by more colors and finally the LED will not function at all.

At first I thought the urethane covering the LED strip was causing them to overheat, but I just did an experiment on a small section where I slowly peeled back the urethane while the LEDs were on. Just as the urethane is pulled away from the center of the LED, it stops working. Pressing it back in gets it to work again. It seems the PN junctions are exposed and the urethane contact is needed for them to work.

I think the LEDs are not burning out, but losing contact with the urethane over time. My question is, what sort of LED tech requires urethane to operate?

Anyhow, I can't recommend the weatherproof ones since they don't last.

Attached Thumbnails
Click image for larger version

Name:	IMG_4986.JPG
Views:	47
Size:	177.0 KB
ID:	25590  
Gas and Electric Vehicle Cost of Ownership Calculator

Give me absolute safety, or give me death!
  Reply With Quote
The Following User Says Thank You to redpoint5 For This Useful Post:
Ecky (03-09-2019)