Introduction: CCFL Monitor to LED!!!
Hello ! this is my first instructable !! you can say my HELLO WORLD inctructable so be nice i will do my best to show you my work.
My main problem was my monitor that i use for my bench (computer repair bench) . It was an old one and about 10 years old, Philips 170c model .
The problem with the monitor was easy to understand . My back ligth goes off after 3 sec and that's because the one of the "starters" for the CCFL lamp fails.
Before continue the reading i have to warn you that CCFL monitors are VERY DANGERUS !!!!!! HIGH VOLTAGE CIRCUIT !!!
So if you are just a hobbist , take a big care! Don't touch capacitors and never expose the HV part of the board if you haven't unplug the power for at least 5 minites!
I TAKE NO RESPONSIBILITY IF YOU GET SHOCKED OR KILLED ... so please watch out to not hurt your self . :-)
First of all .. take apart your monitor and remove the TFT panel .. Take big care because it's very fragile.
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Step 1: Reflectors
Take of your CCFL reflectors/holders from each side and fit the led stripe inside.
Step 2: Solder !
Now you can solder cables on the led stripe , you can use new or you can use the same cables after removing the from the lamps . I have to say that my stripe used about 250mA at 12V for two connected in parallel you get 500mA so don't use ultrathin calbles because they will get hot and waste energy .
Step 3: Power Board Work
Here you have to remove the HV transformers to create space for your little board.
I used the connector from the board (only one needed ) WATCH out for the POLARITY.
Also you can add N type ( or P type ) mosfet for PWM dimming. In my case i used Ntype from an old motherboard .
Step 4: TEST IT FIRST
Put back everything together and test before the complite assembly . Everything worked just fine ! 1/3 of the energy needed for the monitor to work ! realy nice for me because I'm offgrid !!! .. (just an other instructable... ..... oh god)
Step 5: THE END
The final result is wonderfull !! My monitor is brigther than before ! and with better view angle.
The only problem is that the leds take voltage form an non stop enegry source . so even when you turn off the ,monitor the leds still working . But who cares.. i close the monitor with a switch plug .