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<blockquote data-quote="Tony" data-source="post: 160298" data-attributes="member: 1"><p>Yea boi! My 4mm wide LED's finally came in and I was able to install them into the old LCD monitor that used to have CCFL's in it. The driver died so instead of getting a new driver board and using a crap ton of power, I decided to replace the 4 CCFL's with two strips of LED's. I was worried they would not be as bright as the CCFL's but it turns out they are not that bad. </p><p></p><p>I did have a little issue though, I needed to run the LED's to a power source but I wanted to keep it so that I could still take the front panel off because you know I'm going to be playing with this some more. So I cut the plugs off of the CCFL's and soldered them up. I then put the largest knife edged tip on my soldering iron and wiped the entire driver board (for the CCFL's) clean leaving only blank solder pads. From there, I wired the input plug that gave power to the board to the plugs where I wanted to plug in the LED's. </p><p></p><p>The issue I have now is that the LED's stay on constantly since the board was always powered (the CCFL driver board) and that is where I have pulled power from. So the LED's stay on even when the LCD is turned off. There is a single yellow wire though in the power supply going to the driver board and that was used to send a signal to the board to turn on. I have yet to check what kind of voltage it sends, if it is constant or just a source for a period of time. Either way, I think I know how to do this, but correct me if I'm wrong. </p><p></p><p>All I would need is a simple mosfet that can handle 12v at about 1a for the power to the LED's, and then use the yellow source wire to turn the mosfet on or off. The thing is, I don't know if the yellow wire will send a drain signal to deplete the capacitor in the mosfet to turn it off after turning it on. I would think so, but not sure. But my question is, what would be the best mosfet to use with this circuit? I will have to wire it in manually since this board is not meant to work with a 3 prong mosfet. Wire and heat shrink FTW lol.</p></blockquote><p></p>
[QUOTE="Tony, post: 160298, member: 1"] Yea boi! My 4mm wide LED's finally came in and I was able to install them into the old LCD monitor that used to have CCFL's in it. The driver died so instead of getting a new driver board and using a crap ton of power, I decided to replace the 4 CCFL's with two strips of LED's. I was worried they would not be as bright as the CCFL's but it turns out they are not that bad. I did have a little issue though, I needed to run the LED's to a power source but I wanted to keep it so that I could still take the front panel off because you know I'm going to be playing with this some more. So I cut the plugs off of the CCFL's and soldered them up. I then put the largest knife edged tip on my soldering iron and wiped the entire driver board (for the CCFL's) clean leaving only blank solder pads. From there, I wired the input plug that gave power to the board to the plugs where I wanted to plug in the LED's. The issue I have now is that the LED's stay on constantly since the board was always powered (the CCFL driver board) and that is where I have pulled power from. So the LED's stay on even when the LCD is turned off. There is a single yellow wire though in the power supply going to the driver board and that was used to send a signal to the board to turn on. I have yet to check what kind of voltage it sends, if it is constant or just a source for a period of time. Either way, I think I know how to do this, but correct me if I'm wrong. All I would need is a simple mosfet that can handle 12v at about 1a for the power to the LED's, and then use the yellow source wire to turn the mosfet on or off. The thing is, I don't know if the yellow wire will send a drain signal to deplete the capacitor in the mosfet to turn it off after turning it on. I would think so, but not sure. But my question is, what would be the best mosfet to use with this circuit? I will have to wire it in manually since this board is not meant to work with a 3 prong mosfet. Wire and heat shrink FTW lol. [/QUOTE]
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