Question about HP Compaq WF1907 Monitor

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I've got an HP WF1907 19" monitor with a bad AC power connector. It only works when the AC cord is in exactly the right position, angle-wise. I don't know how to get the casing open. If I could, then I could fix it myself. Pixels are okay and I don't think we got an extended warranty on this beast. I can't see any way to open it up without removing the upper "cap" on the unit, but I don't want to break anything. I've heard that these things are a bit delicate, and don't want to have to replace it.

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You need to use flat blade screwdriver, starting at the bottom edge first, once you get it open enough, lay it face down and try lifting the back cover up, be careful on the front panel cables. There is not much you can do to not scratch up the monitor a little bit, they just do not make them to be repaired these days, look for bad solder joints on the power board.

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Posted on Apr 25, 2010

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I can't find information online about your monitor, so I'll give you a generic answer for all monitors.

Almost all monitors use a C13 cord - the same kind used for a desktop computer. Some use a C7 (two-wire, like that used for some name brand laptop adapters) or a C5 (three-wire, used on other laptop adapters)
C13 image:
173-0602-e.jpg
C7 image: ac15wna-r.jpg
C5 image:
173-21103-e.jpg
These images were lifted from the Mouser Electronics website (AC Power Cords Mouser ). They also carry C13 cords with right-angled plugs, which may be more convenient with some monitors.

There are a very few monitors that use an external power supply, which is like a laptop computer power adapter. If this is the case, the voltage and current requirements for the power supply should be on the label on the back of the monitor, and the only other thing you have match is the plug on the power adapter output cord (it needs to fit the power jack on the back of the monitor). Note: the voltage of the power supply must be the same as that shown on the label (usually 12 VDC) and the current rating must be the same or higher. If you don't see the voltage and current listed on the label, look closely at the power jack - the numbers may be molded into the plastic next to it.

It is rare to find a monitor with a permanently attached power cord. If this is the case with yours and it is damaged, do not attempt to splice it outside of the monitor. Put a replacement plug on if the good part of the cord is long enough, and use a good extension cord. Otherwise, you should open up the case and replace the entire cord. You will probably have to get a connector for the part of the power cord inside the monitor also. (If you are good with soldering, you may be able to splice to this connector, using heat-shrink tubing to insulate the connections.)

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2 Answers

No plug in play... don't think their dead... do I need drives first?


no country stated or if not usa what is your line power?(volts AC)
your PSU is inside monitor not outside, so uses a simple line power cord. (just wires)
12 year old monitors, found, (dead)
page one of your user guide is clear, read it yet?
seems not.,
Auto-ranging, 90 to 265 VAC
1280 x 1024 @ 60 Hz, 75 Hz (never higher) resolution settings.
those are very old monitors.. worth like $10 used.
if the power lamp shows wrong, the monitor is dead.
right button is power to the right of it is a power led that must glow.
the old monitors had CCFL backlamps before year 2010.
those are back lamps, that fail fast. 20k hours, fast. (short)
first is the power switch
2nd is a working PC with at least sync signals on 2 pins
Horz/vertical.
then the OSD screens work of not the monitor IS DEAD.
inside this OLD monitor is sleep time, turn if off with OSD menu's its nothing but trouble.
some have an OSD lock, so hold the menu key for 10 seconds
and it unlocks. button 2 from left is MENU.
see page 4-10
the guide is here. not too good , poor diagnosis sections
http://h10032.www1.hp.com/ctg/Manual/c00276671



specs.
https://support.hp.com/us-en/product/hp-l1940-lcd-flat-panel-monitor/427303/document/c00278650#AbT3


testing
power it on, LED power , glows.
with a PC working, say running any BIOS screen only....
or running, windows, in low resolution mode 1280 x 1024
if wise set the pc up to that first. not second.
then plug in the vga cable so the MOnitor only sees that signal above. (if you do above wrong, monitor shows OUT OF RANGE on the screen)

at mon.
PUSH the OSD button, menu, if OSD is dead the montor is dead.
OSD= on screen display., (yes the LDC has brain inside)
then take a flash light . point it at screen
see data now, if yes, in the beam is data the back lamp is dead
as are most 12 years old montors now.

see those 4 cream colored connectors bottom of this PCB
those are the high voltage CCFL lamps.
2 lamps 4 ends. the lamps are bad or the board 500 to 1000vdc
power supply is dead.





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1 Answer

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It might be the connection loose of power cord problem or check your TFT power connector inside the TFT if you can open the TFT screen!!! It may be dry solder….
Other wise go to repairer and do the same….!!!

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