Opening the HP W1907 LCD

[Josh_S_C]

I had this same problem with the display going off after about 4 seconds.
What I did was: There are for plugs inside on the left side that I would guess come from the backlight bulbs.I simply switched them around.I switched the top plugs around and the bottom plugs around just to see what it would do.
I hooked the monitor back up and it came on and stayed on.
And I don't mind saying: Not bad for finding the thing at the dump. LOL

I bought mine new in '07, and suddenly it started going black, and would only come on for a couple seconds at a time. For the past year I've been using an old crt display monitor and it took up a lot of my desk. Anyway, I finally decided to investigate the monitor and couldn't figure out how to get it apart, and ended up on this thread. So..... I switched the wires around and tried it. At first it just shut off, then lasted a little longer, but was still going black after a minute or so. I switched the lower wires back to normal, and left the upper wires switched, and after some flickering for a while, it seems steady and I'm using it to write on this thread! What's funny is I have another exact monitor, just like this one, that died a month after this one did. As I remember it had another problem though, but still ended with going black. I'm sure eventually I'll have to replace some capacitors but for now it works. Awesome thread.

 

[alanhl]

haha, been there. This ones a little tricky. Hope you have strong fingers. start by removing the base. There are 3 screws. First pull the base plate off. Then remove 2 screws. Next remove the little rubber insert in the center of the base bracket. You will need a long phillips to get to the 3rd screw. Slide out the base bracket. Flip the panel over and stare at the lcd with the buttons side on the top. Grab a small flat head screw driver. Look at an angle in each of the corners between the inner black lcd trim and the silver outside trim. There is a slit. Shove the flathead in there and pry outward toward the silver trim while lifting on the black inner trim vertically. The trick is to flex the black trim toward the silver and then pull up. There are 6 plastic snaps on the top and bottom, and 4 snaps on the left and right. If you've taken laptop screens apart, you'll feel the similarity.

Once you pry the black trim off the front. Disconnect the LCD Menu button assembly and power button. Then flip over the LCD and lift off the back shell. Looking at the back, remove the 2 connectors for the speakers. Use a small flathead to pry the 4 Inverter power connectors. These 4 connectors have a clip on them and are usually hard to pull out using the wire. Once thoses 6 connectors are removed, remove the 2 phillips screws holding the AC power plug to the case. Also remove the 4 3/16 posts for the VGA and DVI ports. Next remove 4 screws, 2 screws from each side of the LCD assembly. Hold the panel face down with the aluminum tape in the bottom left. Lift the shield and guide the 6 wires through the cage. While opening, look inside and disconnect the flat ribbon cable as soon as you can. Put the LCD to the side. Remove 2 screws from the Video processing board, and 5 screws from the power supply. Note: 1 of the 5 screws is longer. Rotate/slide the power PCB away from the cage to clear the speaker and AC plug, Then rotate towards the Video board. Disaconnect 1 plug. The OTHER plug is SOLDERED and must be disconnected from the video processing board.

There you have it. It stumped me for about a half hour. No pry marks. Barely noticed the 2 slits in between the trims. Well, good luck. Happy Soldering.

PS: I opened mine because I assumed it had bad capacitors. It only powers on for a short short period of time.

which end is the flat cable disconnected from, one end is glued firmly to the flat panel and strongly resists being pulled and the other end seems very difficult to get to. hope you are still checking on this post
best regards Alan

 

[tsummitt]

this isn't so much an answer, but I have the same problem. took the 1907 apart tried switching the back light cables and no go. The monitor turns on and the power light just flashes from blue to green over and over. after playing with it for an hour or so.. I figured out, if I unplug the cable from the video input board to the lcd screen and turn it on the backlights come on, then if I plug that cable back in while powered on the monitor works fine! Until you unplug it, and then the flashing starts again. If I unplug cable from video board to lcd and power back on back lights work, and plug cable back into lcd monitor works again! I would live with this as a fix, but if the power goes out.. I hav to take the monitor apart again just to do this. Any idea?