I need advice from someone who is very familiar with LCD backlight circuits. I need to convert the backlight power supply on a new Sharp monitor to power the tube with pure DC instead of AC. [Sharp LL-M15X1U]
A friend is unable to use the monitor because she is extremely sensitive to the flicker from the backlight. Appreciate any help **************************************************************** The refresh rate is set at 60Hz, which is NOT a problem on her old laptop - reducing the brightness does not help much. An anti- flicker screen helps some. The monitor will be shipped to me if the tube will light with DC (and I figure it may need a higher start voltage to ignite, as with fluorescent tubes). I suppose the newer monitors use a much higher freq SMPS for the backlight. I am hoping that, worst case, I will have to add a relay which will allow the tube to light with AC (if that supplies a larger initial pulse), and a second later switch to DC. She doesn't want to pay the shipping unless it's a sure fix. Tried many other LCDs before buying this one (which seemed OK at first). Bil Green PC 1000 Mammoth Lakes, CA 93546 760-924-1000 _______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com
