Electronics Forum

Electronics Circuits & Projects discussion forum. Get help with electronics.


Help with LED lights

New to electronics? Don't know where to start. No problem! Post your questions here.

Moderator: pebe

Help with LED lights

Postby woody258 » Thu Jul 04, 2013 2:58 am

I have a led license plate light from my motorcycle that doesn't work. There are two resistors and a third component that I can't identify. Any suggestions to try? I am a novice but have a multimeter and solder gun. Thanks!

[attachment=1]
ledfront.jpg
ledfront.jpg (155.13 KiB) Viewed 7474 times
[/attachment]
[attachment=0]
ledback.jpg
ledback.jpg (149.82 KiB) Viewed 7474 times
[/attachment]
woody258
 
Posts: 1
Joined: Thu Jul 04, 2013 2:35 am

Re: Help with LED lights

Postby oreo57 » Wed Aug 14, 2013 10:35 pm

3 LED's
2 resistors
1 diode of some sort..

Is your multimeter digital? I found w/ mine I can "tset" LED's by putting it on the lowest ohms setting. W/ the correct polarity an OK LED will light...
Or use a Lithium "button battery" (or any 3 v source..) If all LED's are ok .. then my next guess would be the little diode is fried..
My limited understanding can see why the one resistor is there (3 LED's in series would only need 10.5V -ish not 12v or so. ) to drop the voltage.
not sure of the need for the other or the diode ... Looks easy enough to de-solder every part and test each though..
oreo57
 
Posts: 24
Joined: Wed Aug 14, 2013 1:24 pm


Return to Electronics newbies



Who is online

Users browsing this forum: No registered users and 0 guests

12V Inline Cord Switch IP67 Waterproof, Outdoor ON/Off Toggle Switch DC SWITCH
$9.99
12V Inline Cord Switch IP67 Waterproof, Outdoor ON/Off Toggle Switch DC SWITCH pictureEZ GENERATOR TRANSFER SWITCH - The Original, UL / CSA Approved - Made in the USA
$89.99
EZ GENERATOR TRANSFER SWITCH - The Original, UL / CSA Approved - Made in the USA picture200 Amp Transfer Switch, 48000W General-Duty Double-Throw Safety Switch
$104.99
200 Amp Transfer Switch, 48000W General-Duty Double-Throw Safety Switch pictureSensor Switch NPP20 PL nLight Plenum Plug-Load Control 120V, 20A
$29.00
Sensor Switch NPP20 PL  nLight Plenum Plug-Load Control 120V, 20A picture


cron