DUD
01-10-2001, 03:15 PM
What is the propre type/ ratings? Can I pick one up at Rat Shack? Wiring diagram link?
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Roy
01-10-2001, 04:18 PM
They're all about the same. The short lead connects to the " - " (black/negative) circuit. If it doesn't light, reverse the polarity.
Graham
01-10-2001, 04:22 PM
Dud,
Just about any led will do, examine the original to make sure there is nothing extra, just the led. Get from somewhere an led of the same physical size (so it will fit). Assuming the original was just the led, connect a wire to each leg of the new one (insulate to avoid shorts), and try it on the board, you wont do any harm to the led, but be carefull not to short ant pins on the mb. If it lights, make the connection permanent, if not reverse the wires.
G
Just about any led will do, examine the original to make sure there is nothing extra, just the led. Get from somewhere an led of the same physical size (so it will fit). Assuming the original was just the led, connect a wire to each leg of the new one (insulate to avoid shorts), and try it on the board, you wont do any harm to the led, but be carefull not to short ant pins on the mb. If it lights, make the connection permanent, if not reverse the wires.
G
justy
01-10-2001, 04:22 PM
Roy's right, LED's are fairly hardy fellow's.
Pick anyone you want, and then simlp connect it to where you're old one used to be. If it doesn't work, swap the leads about.
All the best, justy.
Pick anyone you want, and then simlp connect it to where you're old one used to be. If it doesn't work, swap the leads about.
All the best, justy.
Barney
01-10-2001, 04:32 PM
Don't forget that it has to be 12V!I already fried a couple of those 1.5V on a 9V battery...
They're gone before you know it.
Ronald
They're gone before you know it.
Ronald
crazyray
01-10-2001, 04:36 PM
What if the LED says "reverse voltage 5V"? What is that about? Any consistency in color coding of the wires?
Graham
01-10-2001, 05:14 PM
Crazy
The reverse voltage indicates the maximum voltage you can apply reversed before the device will 'break down' and allow current to flow the wrong way (it is a diode remember).
Barney, as for getting a 12V diode, they all come within a range of about 1.5 to 3V, they require a resistor to get them to work at different voltages. That's why I told Dud to check there was just an LED (ie no resistor), the resistors are normally on the board, so he wont have to worry about that.
G
[This message has been edited by Graham (edited 01-10-2001).]
The reverse voltage indicates the maximum voltage you can apply reversed before the device will 'break down' and allow current to flow the wrong way (it is a diode remember).
Barney, as for getting a 12V diode, they all come within a range of about 1.5 to 3V, they require a resistor to get them to work at different voltages. That's why I told Dud to check there was just an LED (ie no resistor), the resistors are normally on the board, so he wont have to worry about that.
G
[This message has been edited by Graham (edited 01-10-2001).]
justy
01-10-2001, 05:30 PM
G,
You know where I coming from...
The original posting was ; replacing a power LED.
I think some of us have got a bit carried away in the science of it all. It is basically an LED, connect it in reverse polarity, the chances are it will work the other way. Unless you punished it. In reality, LED's are very uncostly, even from radio shammesss. Forget about rating's etc... Pick a colour you like, and apply it. Connect it to leads leads you have.
All the best justy.
You know where I coming from...
The original posting was ; replacing a power LED.
I think some of us have got a bit carried away in the science of it all. It is basically an LED, connect it in reverse polarity, the chances are it will work the other way. Unless you punished it. In reality, LED's are very uncostly, even from radio shammesss. Forget about rating's etc... Pick a colour you like, and apply it. Connect it to leads leads you have.
All the best justy.
DUD
01-10-2001, 05:43 PM
Success! A visit to Rat Shack, $.99, and we are cookin'. Logic prevails...the power indicator uses 3 wires, but only 2 are connected. Black gets the negative lead, the other connected lead (green in this case) gets the positive lead, and we are in business! Could I have survived not having a glowing light to let me know the computer is on? Yes, but now I've got a RED light. And it is WAY COOL. Now if I could just use a toilet for the case... http://sysopt.earthweb.com/forum/wink.gif
Buji
01-10-2001, 06:02 PM
Bicolour LEDS, hook 'em up one way and you get red, reverse the polarity and you get green. http://sysopt.earthweb.com/forum/wink.gif
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