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Hp 1703 Please Help if you replace the main boards ( power & Video Or just the Power Board) will this fix the display issue. thanks

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SOURCE: Hp 1703 Video for 1second

Probably something wrong with the monitor's power-board. If you are good enough in electronics and soldering, disassemble the monitor, unscrew the board. Check the cables, connectors, blown caps and fuses (some of them may doesn't look ordinary) first. Look for the dry joints, especially at transformers. Resolder all the connections. Test power transistors. You should unsolder them to test properly.

Posted on Jan 31, 2009

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SOURCE: Hp 1703 Video for 1second then Black but can see it but wery dark

sorry, not really a solution, but may help point you in right direction. I have similar or same problem with my monitor but is an f1903 (HP). I recommend you look at the f1903 board postings to see those answers. Several seem identical for fixes and fix may possibly be cheap, but unfortunately noone has posted how to open the monitor up to actually check it inside. This is the tricky part, as seems no catches or buttons are present and removing back screws do not let the monitor case open without some type of special trick or move. If you figure it out, please tell us all! Thanks

Posted on Feb 12, 2009

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Lg Flatron-w1942T Problem: Black display plz help when i swich on the monior it shows video for single moment and then black .au io is ok my video card is ok


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Sep 01, 2016 | LG Computer Monitors

15 Answers

HPw19 monitor


If you are using a laptop, you might have pressed the button to switch from LCD to external display. The key combination depends on your laptop model, but it is usually Fn+F4 or some other function key. Look for a function key that also has an icon looking something like an external monitor. 48d40f3.jpg Try pressing function and that key a couple times to see what happens.

Jul 13, 2008 | HP w19 19" LCD Monitor

1 Answer

Hp monitor wont turn on.


Hello,

First, remove the power cord from the wall, insert it into another outlet. Also, change the power cord, in case it is bad. Sometimes a bad power cord may not pass current into the monitor. But if problem persist, then it means the monitor is having a power problem.

The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.

The monitor is receiving current but cannot circulate or transfer the current to other necessary part of the monitor because of the defective power supply board. You might be lucky it's just a blow fuse. Also a defective transformer can cause your monitor not to power on.

All these can be checked on the power supply board.

But more often bad capacitors causes problem on the power supply board. I do not think the power board needs replacement, rather those defective capacitors is causing this issue. Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.

The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)

You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board to save you some stress.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't know about monitor repairers, take the monitor to the nearest repairman to fix the fault for you. Also, note that monitor stores a lot of current, so wait a while before opening the monitor back cover.

I hope this helps.

Regards.

Sep 13, 2011 | HP Pavilion F1703 17" LCD Monitor

1 Answer

Hi Help desk, My Samsung SyncMaster 540N LCD monitor is taking hours of time of display the desktop.what might be the case?Is it due to CAPACITORS popping out? Need a damn help from...


hi there,

Yes, it's capacitors issue.
I will explain how to fix it:
  • Open the case of the LCD
basically in all LCD monitors have two circuit boards (power supply board and system board)
  • After you open you will see the two boards are
  • You see a board that has a socket for the power source. wrote that the board we're looking for (power supply board)
  • Remove all cables connected to the board and take out the board. (get noted before you unplug it)
  • Now you see it components on board, we looking for capacitor.
  • Looking for damaged capacitors, physically you will see a capacitor on the top like a bloated
  • Replace that capacitor. Done
For More details please read my tips here

Please let me know the result

Thanks.

Dec 16, 2010 | Samsung SyncMaster 540N 15" LCD Monitor

1 Answer

LCD working but how to fix red,yellow,green line on display and power supply dead how to fix and display shaking pictures please urgent reply me thanks


My advice, dont make any attempt at repairing the circuit boards inside this unit.
The power supply is more then capable of giving you a fatal electric shock.
The boards in these screens should be replaced as they are not designed to be repaired at component level and fitting replacement boards without knowing if the board is faulty can introduce further issues. Many suppliers will also refuse to take back any boards that have been fitted..
Take the screen to an experienced repairer or replace it..

Nov 27, 2010 | Acer AL1916W 19" LCD Monitor

2 Answers

Make/ Model: HP w22 Service Manual or repair


hogwillie, Yes, I gave up on trying to get useful info from ANY lcd display manufacturer! Tell me some stuff will ya! Have you disassembled the unit yet? Did you find any SWOLLEN electrolytic filter capacitors? Have you checked ALL the solder joints for the components (through hole and surface mount parts) for "frosty" or "thermal fracturing"? I use an old WWII navy inspection microscope for that task. All the solder joints should be nice and brite, just shy of being "mirror finish" or polished chrome on a hog showbike! Let me know what you find. Also check for video clips at youtube if you are repairing this unit yourself. FYI visit www.ccl-la.com/badcaps.htm run by "buddymc" also from fixya and try the following www.badcaps.net and www.lcdparts.net I would like to know what u find wrong with ur boards. If you can't video tape your tear-down, at least do some digital stills documentation of your work. Use multi color sharpy markers to identify and match PLUGS to CONNECTORS. Makes reassembly a lot easier!! Bye for now. 12fixlouie aka louie12fix

Oct 28, 2009 | HP W22 LCD Monitor

2 Answers

Hp 1703 Video for 1second then Black Please Help if you replace the main boards ( Power & Video Or just the Power Board) will this fix the display issue. thanks


You may want to check your power and connection cables are not showing bare wire, which is the metal hanging out of the rubber insulation cord. So just check for that and if not that I would call HP.

Jan 30, 2009 | HP Pavilion F1703 17" LCD Monitor

1 Answer

Hp 1703 Video for 1second then Black but can see it but wery dark


sorry, not really a solution, but may help point you in right direction. I have similar or same problem with my monitor but is an f1903 (HP). I recommend you look at the f1903 board postings to see those answers. Several seem identical for fixes and fix may possibly be cheap, but unfortunately noone has posted how to open the monitor up to actually check it inside. This is the tricky part, as seems no catches or buttons are present and removing back screws do not let the monitor case open without some type of special trick or move. If you figure it out, please tell us all! Thanks

Jan 30, 2009 | HP Pavilion F1703 17" LCD Monitor

1 Answer

Hp vs19


If it displays the 'no input' type message on the display, it's likely a cable or perhaps the main board in the monitor has gone out. However, if the display is completely black, no backlight, etc. or if the backlight flashes once then stays off, and possibly emits a high pitched squeeling sound, it is very likely that the capacitors on the power supply board for the inverter(s) have gone bad. Apparently there are a few different versions of this same monitor, but all seem similar, and many seem to have problems with the capacitors going bad over time. There is information floating around on this monitor on the internet (http://boredprojects.blogspot.com/2008/06/hp-vs19d-fix.html) which may or may not be the same as yours, but pulling it apart to replace the capacitors is a $5-10 and 1-2 hour shot in the dark, and seems to be within the capabilities of anyone with the ability to solder. Just be careful of the small surface mount components which are all over the back sides of these boards... The bad capacitors should be fairly obvious, with bulged or ruptured tops, possibly leaking fluid. The are most likely going to be the 1000uF 10V (or 25V depending on the model) capacitors towards one edge of the board. On mine, there were 6, 3 of which had swollen. Replace them with the same (higher voltage rating is fine, but not lower) specification parts, and it should be back in order.

Dec 27, 2008 | HP vs19 (Silver) 19" LCD Monitor

4 Answers

Display works - but only for a plit second...


Lower your resolution on your computer. Usually when that happens the resolution is set higher than what the monitor can support. Lower the resolution and try again.

Jul 25, 2007 | Dell E173FP 17" LCD Monitor

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