Question about HP Pavilion F1703 17" LCD Monitor

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What are the toroidal coils?

Any store to purchased them. Do you have or can provide with some intructions on installing the toroidal coils and transitors.
I have heated up and done sodering on top of them but i is till have the same problem.
Monitor problem: After turning the monitor on for 3 to 5 seconds it turns off to a black screen.
I have done some sodering, specially, on dc jacks, but i have no other experience than that. Any pictures and instruction will be helpful.
Thanks,

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On my monitor I had the 8 pin smt FET's short out. The CCFL transformers were not bad. You can use a ohm meter to determine if the transistors are shorted or open. If you use FET's like mine did, you can monitor the out put for voltage. Mine was 12 volts pulsed DC. Good luck.

Posted on Aug 26, 2008

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My hp monitor f1703 keeps flashing when on and off


Look for cold solder joints on the 4 Toroid inductors in the inverter board first as hsown in my pictures: http://s807.photobucket.com/albums/yy352/budm/HP%20F1703/

Mar 14, 2011 | HP Pavilion F1703 17" LCD Monitor

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I have an HP Pavilion f1703 monitor that has a problem. The power cord has an AC converter mid-way thru ints length. there is a little green light that comes on when plugged in. The monitor seems to go...


You need to find out if the AC adapter is still putting out 12vdc with a load such as car 12v bulb, the problem can be in the monitor also, this is a bad model and was part of a recall a long time ago, it has problem with bad solder joints on the 4 TOROID inductors.
http://s807.photobucket.com/albums/yy352/budm/HP%20F1703/
You need to remove old solder, clean the TOROID leads and resolder.
If you Google "HP F1703 problem/recall' you will get a lot of hits.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Please leave rating if it helps.

Feb 05, 2011 | HP Pavilion F1703 17" LCD Monitor

1 Answer

When I turn my monitor on...............the switch is blue instead of green and will not come on..............


It does the same when attached to another PC? Video cable is OK?
This monitor is known for having bad solder joints on the 4 TOROID chokes, see pictures here: http://s807.photobucket.com/albums/yy352/budm/HP%20F1703/

It has bad problem since released: http://forums.cnet.com/7723-7590_102-153888.html

Please leave rating if it helps.

Jan 22, 2011 | HP Pavilion F1703 17" LCD Monitor

1 Answer

Desktop blank


Romove old solder from the 4 TOROID (round) inductor leads, clean them real well and resolder, check the caps and the transistors (4, c5706/5707) also.
http://s807.photobucket.com/albums/yy352/budm/HP%20F1703/

Basic LCD monitor troubleshooting guide:

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

Failed TV, Monitors, Caps : http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitor kits: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Please post back what you find.

Nov 01, 2010 | HP Pavilion F1703 17" LCD Monitor

1 Answer

When on my monitor blinks on and off hp pavilion f1703


Open up the set and resolder the 4 TOROID INDUCTORS (doughnut shape coil) in the inverter circuits.

Jan 11, 2010 | HP Pavilion F1703 17" LCD Monitor

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Kds vs-f14


There is usually an identical resistor somewhere else on the circuit board, so if you cannot read the colors of the burnt one, you can read the colors from an identical resistor on the same board. If you just replace the resistor, it will probably just burn out again or damage another component, you have to find the cause of the resistor burning out, most likely an electrolytic capacitor failing. Look for bloated or seeping capacitors and replace those as well. Also look for broken or burnt toroid coils.

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You are experiencing an inverter board failure. You will need to replace or repair the inverter. The inverter drives the CCFL lamps that illuminate the screen if the lamps draw to much current or components on the board are overheating it will shut down the backlights. Some monitors have cold solder joints on the toroidal coils of the inverter that causes this problem, very typical with HP monitors, If you are handy with a solder iron you may try just re-soldering board and replacing push-pull transistors for a few more years of use. Provide make and model and I can be more specific about probable cause and solution.

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The inverter boards for the backlights fail on these HP F series monitors. Sometimes it is cold solder joints on toroidal coils. Sometimes the transistors that drive the output transformers (4). It is not difficult to repair if you have good soldering skills. I usually resolder the toroids and replace the transistors regardless of culprit. You may see the heating effects of bad components (discoloration) on the board.

Dec 28, 2007 | HP Pavilion F1703 17" LCD Monitor

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