I?m using a Philips 104E 14? monitor. When I use it, it goes off suddenly (no even standby LED) and...
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I?m using a Philips 104E 14? monitor. When I use it, it goes off suddenly (no even standby LED) and then it couldn?t be turn on. When it?s working I can?t control the horizontal width even with the control battens. I did following troubleshooting steps : 1. All dry-joints were soldered. 2.horizontal transistor TIP122 and H-Out transistor were replaced with new ones but problem still remain same. 3 .then in order to check the voltage at H-out transistor, 230V bulb was connected to the points where E and C of the H-out transistor were connected. (and H-out was removed from the board )When I turn on the monitor I found the bulb is blinking (this is abnormal and fixed voltage should come to the h-out Tr, I think.) ******After removing the H-out transistor amber color LED came up. Can this be a Fly-back issue? Please guide how to troubleshoot this Kushan