Question about HP Compaq WF1907 Monitor

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Static on Screen

White static horizontally on screen won't go away with any adjustments.

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  • Anonymous Mar 12, 2009

    Exactly the same problem.

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  • 298 Answers

Is this an LCD type of monitor or CRT? either case, there's a problem with the horizontal IC. My best solution for this case is to have the unit serviced by an authorized personnel as meddling with the internal circuits of the monitor is dangerous.. Have them estimate the price for repair, if it costs too much... better buy a new one.


For CRT type of monitors: try degaussing, this feature can be found on the OSD (On Screen Display). This can be accessed by pressing Menu on the monitor buttons.

Hope this helps!

Posted on Mar 16, 2009

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Sounds like AC line interference. Use an external line filter.

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Sony KP-57WV700


Hi. It seems that the g2 voltage of the picture tube is too high, resulting in a white screen, often with white horizontal lines. The g2 (= second grid) voltage is derived from the flyback high voltage. The voltage divider is mostly integrated in the flyback trafo housing.(including the adjustment knobs). A failure in this divider may lead to this defect. The static you hear may come from sparking in the divider. The flyback trafo is soldered onto the main printed cirrcuit board. Sometimes, one of the pins sits loose in the soldering pads.
Turn on the set and observe for any sparking around the entire flyback circuitry, and, or the flyback trafo itself
The screen turns black after a while, as a too high beamcurrent is detected. The set disables the flyback. Stand-by blinks meaning that there is a fault condition.
Be carefull with the high voltages. The flyback voltage is very high (20-30 Kilovolts !) and may be lethal !!

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Iv had an n64 before so i think i have a good idea of how to set it up. i've managed to tune my tv in to find where abouts it is but there's only a black screen.i can turn the n64 off an the tv screen goes...


Adjust the vertical or horizontal hold controls. This is helpful even if regular TV stations come in fine. If your TV has an automatic fine tuning control (called AFC or AFT), turn it OFF. Use the manual fine tuning dial to adjust the picture. If turning OFF the AFC/AFT causes your TV to display in black and white, then leave the AFC/AFT ON. Slide the Power Switch on the Control Deck to the ON position. While the control deck remains ON, turn the TV off for 10 second then back on again. This resets your AFC/AFT so that it will tune in the signal from the control deck.

Move your control deck farther away from your TV. If the control deck is too close to the TV, the control deck may cause some interference.

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OK, problem seems in convergence section of TV and can be confirmed by testing voltage supply as mentioned in schematics.

You can download service manual copy from Manual Zone for small fee and it has schematics, exploded views. board location, part numbers info.

Let me know if you need further help.
Thanks.


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1 Answer

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Try turning off different lights near the room or in the room that it is in. Our tv does that if the overhead light in our bedroom is on, it's a room right next to our living room.

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1 Answer

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1 Answer

A big white vertical static band appears as soon a i turn on the power


Some of the transistors or the connection to the panel inside the monitor are damaged. There is no absolute fix for this problem.

You can try pushing on the bezel (NOT ON THE SCREEN) of the monitor at the edge of the screen directly at the lines and you may be able to push the connection back together well enough that the line goes away, but usually in desktop monitors the bezel is too rigid to allow you to put any pressure on the connections at the back of the LCD panel.

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1 Answer

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Congrats on changing the fly and getting it to come on. If it is a sony as it looks at the top of this page (accurate model?) need only to adjust focus and/or the horizontal static control. can't tell you where the horizontal static control is exactly but there are large wire associated. If not a sony then adjust the focus on the flyback.....top control bottom control is screen or for brighter picture.

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Look in your menu for something called "horizontal static convergence" or just "convergence". Adjusting this will align all three tubes electronically. If physical adjustment is needed, then you have to do this manually inside the Tv. keever

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i had this problem to,
what i did to fix mine, take the back off and find the ysus board there are pots on the y sus board that you can adjust with a screw driver mine has 4 on it i adjusted the the two more accessible ones and the problem is gone

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