Question about HP w1907 LCD Monitor
Hi the cause is screen back light not working properly. you need to remove the back cover of the monitor to access the internal part of the monitor. then look for the connector of the cold cathode fluorescent tube back light going to the power inverter board of the back light you will noticed a dry joints which cause a loose connection that is why you hear a sound that cause of spark. you need to re soldered the connector or replaced if totally burned.
Posted on Nov 08, 2012
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Posted on Jan 02, 2017
SOURCE: HP vs 19b LCD monitor power
You need to start by looking at the power supply section first for bad caps, the problem can also be in the inverter or bad lamps. does it do the same when it is hooked up to other PC?
see the one I just fixed with bad lamp problem: http://s807.photobucket.com/albums/yy352/budm/HP%20VS19D/
Posted on Feb 01, 2010
This is the way I each all my techs to open and repair a monitor. First things first. You’ll need a Phillips screwdriver, rubber gloves, a fiberglass diddle stick(Radio Shack)aluminum tape, small cups and colored markers. Do this operation on a large flat surface. I suggest using an anti-static mat or large piece of wood underneath so as not to scratch the table or counter surface. First take your diddle stick and sharpen one end to look like a flat blade screwdriver. DON NOT USE a metal screw driver (metal causes scratches.) Now turn off the monitor, unplug all the cables and remove all the accessories i.e. stand, speakers. Take out all the screws from the back (these are different sizes so put them in different cups and mark their locations using a colored marker). Once all the screws are removed take your diddle stick. Insert the stick under the front edge of the screen. Sometimes you can use a finger to start lifting the plastic bezel. Under the plastic bezel you’ll see the metal frame of the screen. The diddle stick needs to ride on top of that metal and under the plastic. Once there you can move the stick up and down on each side. This will release the internal plastic catches and soon the bezel will pop off. The control panel my be screwed into this so be careful. At this point you can lift out the screen. There will be metal shield(s) covering the two circuit boards. A number of screws will release the boards. You’ll need to remove the nut screws from the video connector also. The power supply board is probably soldered on to the frame but that should be easy. That’s it. Do your thing and be careful putting it back together. The Golden Rule of service work – NO EXTRA PARTS. Good luck.
Posted on Mar 03, 2010
Testimonial: "thanks... don't have a diddle stick so used a thin putty knife with cloth over the screen."
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