Sanyo color TV CK34D300 screen on the bright line from the bottom up scrolling fault repair - android - Phones Developers

MOS power IC full range

Filter 18.432M

A simple fault that once put down three masters: Yesterday afternoon, I received a Sanyo CK34D300 color TV, which can be turned on. The picture, sound and color are all on the screen. There is a bright line on the screen, scrolling from bottom to top, similar to 50Hz communication. Interference, tearing down the bottom plate, has been soldered beyond recognition, the customer said that three masters have not solved the problem, see the color line, the line, the power supply filter capacitors including the crystal oscillator are the first few masters A generation has changed. Check the power supply 140v, 27v, 24v, 18v normal, remove the power supply tube installed on the gorgeous five-wire module failure, it seems that the interference has nothing to do with the power supply, change LC201LA7687 does not work, facing the motherboard that has been almost soldered, I really feel no way Start, the first three masters you think of have thought of it, no progress in the past half day, no way to do it, ready to join the ranks of being laid down, helplessly start to see if there are any new faults, more than an hour in addition to the bright line interference Other faults reappear. Just want to give up the maintenance and move the machine to cover the back cover. When the bottom of the machine suddenly smokes, the screen will disappear. Pull out the plug, look for the smoked part, touch the heat of the bend of the power cord, peel off. The black protective layer, inside a blue power cord has been burned through a small black hole, a pull off, is the fault of the three masters down here, it will not be so simple, put on the power line interference is gone, The fault was easily ruled out in the hardships (it was more than eleven o'clock in the evening). I was blinded by three masters, and I was inadvertently... dizzy for a while.