did i burn a led on the psone screen...

Master of Portables · Sat Jan 27, 2007 10:20 am

well i was messing around with the batteries on the newly bought small led in the psone screen, but i think i might have shorted the leds out, blue sparks, and now it smells like burnt rubber(don't ask why) i opened the screen to check, and one has black spots on one side, but the whole screen smells burn, why is that(i wasn't using a resister, )

Retromaster · Post by **Retromaster** » Sat Jan 27, 2007 10:26 am

YEP......you fried every (i think) one of them. i would know because i'm the i'm the master of frying stuff accidently

which is a bad thing

quote martha stewart
you're gonna need some more leds. let's hope you have some spares...
if not, I could probably lend you some as I purchased 200 t1 leds from japan. better yet, go to mouser .com. Of course, you already know this so i'll shut up now.

Master of Portables · Sat Jan 27, 2007 11:12 am

i didn't have anything soldered, i was just hooking up one, the others still work...

Retromaster · Post by **Retromaster** » Sat Jan 27, 2007 11:19 am

well then that led is BAD....If it smells burnt, than it's bad. what kind of battery was it?

Master of Portables · Sat Jan 27, 2007 11:26 am

7.2volt

Retromaster · Post by **Retromaster** » Sat Jan 27, 2007 11:44 am

OOOOOHHHHH YEEEEAAAAHHHHH..........
that's why......you see, you standard t1 white leds are 3 volts, so 7.2 volts would roast it like a marshmallow....mmmm.....marshmallows.....
next time try a two pack of 2 AA batteries in a holder to test leds. that's what I do and I have missed out on the marshmallows.

Rellizate · Post by **Rellizate** » Sat Jan 27, 2007 12:07 pm

I don't think he ran it off 7.2v. I assume he ran his screen off 7.2v and then his leds of the 5v point off the screen.

Kurt_ · Post by **Kurt_** » Sat Jan 27, 2007 1:28 pm

What has a black spot? The LED or screen?

Shorting an LED wouldn't do anything to the actual LED.

Is your sceen not working? Or just smelly?

Master of Portables · Post by **Master of Portables** » Sat Jan 27, 2007 4:30 pm

ok, the led has a black spot, the screen is not burnt, and is not connected to anyrhing for this sake in matter(not even the board...)it just smells, an it looks like nothing has happened to the leds...

Kurt_ · Post by **Kurt_** » Sat Jan 27, 2007 5:13 pm

Did you try wiping the LED?

And what are you asking for help with? Everything sounds to be fine, except smelly.

Retromaster · Post by **Retromaster** » Sat Jan 27, 2007 5:15 pm

Rellizate wrote:I don't think he ran it off 7.2v. I assume he ran his screen off 7.2v and then his leds of the 5v point off the screen.

than if no 10ohm resistor is connected to the led, it'll fry.

Post by **Skyone** » Sat Jan 27, 2007 6:32 pm

Retromaster wrote:
Rellizate wrote:I don't think he ran it off 7.2v. I assume he ran his screen off 7.2v and then his leds of the 5v point off the screen.
than if no 10ohm resistor is connected to the led, it'll fry.

Not in the way he's describing it. It would cycle through colors, fade, get hot, then die.

Kurt_ · Post by **Kurt_** » Sat Jan 27, 2007 6:34 pm

Why are we so overly concerned about this? Replace the LED, use some febreeze, and it's fixed!

Retromaster · Post by **Retromaster** » Sat Jan 27, 2007 6:38 pm

It would cycle through colors

how can a white LED cycle through colors?
shades of white? I've put 18 volts just for fun into a red led once. It exploded. and it remarkably smelt like.....marshmallows.....

Post by **marshallh** » Sat Jan 27, 2007 6:49 pm

Retromaster wrote:
It would cycle through colors
how can a white LED cycle through colors?
shades of white?

White LEDs are actually blue, but there is a yellow phosphor coating mixed in the plastic casing, so you actually see a mix of blue and yellow light.