Question about Gateway FPD2275W LCD Monitor

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Flikering screen with a claping sound...

Hi,

read your solution suggestion...
did replacing the three 470 microF capacitors on the Power Supply fixed the problem?
I talked to an outfit called www.monitorv.com and they sell a 'repair fit' that 'reuires soldering' - for $25. is there more to it?

V

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  • sailor56 Jun 08, 2008

    Thank you for the effective help

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The clapping sound could come from a bad "spark gap". The only other thing that I can think of right of the top of my head is a bad "High Voltage (2nd Anode) wire or connector. I f you can possibly operate the monitor with the back off and the lights off in a darken room, you might be able to see the sparks or use a small rubber tube, place one end in your ear(not too far, the place the other end around the High voltage transformer to listen for the arcing.
KDonald

Posted on Jun 02, 2008

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Posted on Jan 02, 2017

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SAMSUNG PS42AS5 PLASMA TV POWER SUPPLY FAULT 470MFD CAPACITOR BLOWS NEAR POWER SUPPLY


First thing you should do is to invest in a really good surge protector for your TV. Then when you replace the capacitor again use a good capacitor. Cheaper is not always better. Rubycon seems to do the best for me. There may be other suggestions, however I have the best luck with them.

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Monitor comes on then after 2 seconds screen goes black then if i turn it off again then repeat the process does the same thing


hi,

the power supply of the light tubes is not working well
you need to replace the capacitors of the power suply
the value of the capacitors are bethween 220/40V 470/40V normal theire are 2 pieces.
you will find this in the bak of your screen after removing the cover, its near the tube connectors located.

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Feb 16, 2010 | HP Pavilion F1503 15" LCD Flat Panel...

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Nov 21, 2008 - I have a proview 19" LCD TV PA-19DK5. In the last few days when I turn on the tv the picture appears and disappears after 1 sec. audio is fine, when I use my xbox 360 through the component...


Please post the pictures, that will help. Do find any fuse in the inverter circuits, if you do have 5v (for logic) and 12v (for backlights), then may be the power supply is OK but I am not sure that the inverter is using 12vdc since you have some caps rated at 35vdc, Iwould expect the inverter to be using 24vdc for backlights. See some of the pictures I posted here: http://s807.photobucket.com/home/budm/allalbums

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I have same problem


Replace the following capacitors:

3 pcs - 220 microF - 25v
2 pcs - 1000 microF - 25v
1 pc - 2200 microF - 25v

Resolder the 2 transformer legs for the inverter.

Roan
Triangle Tech Whiz.

Jul 23, 2009 | Acer AL2216W LCD Monitor

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When I turn on my my lg flatron w1952tq monitor, the message ''analogique gestion alim'' appears and then the screen goes dark. How can I fix this?


possible defective capacitor C202, if I remember well.

is 680 microF/ 25 volts with polatiry and is in output of power supply.

The defective capacitor has a visible... bump on top :) (in case that is not the C202)

At least this was the reason to my monitor.



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My monitor won't turn on?


If there is no power at all then it is either the power cable or the power supply board inside the monitor.

The part must be tested before replacement.

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Optiquest q20wb Screen goes blank after powering on


I'd like to report a success story. I had this same problem with my Q20WB. It sat for over a year in my garage. I eventually bought replacement capacitors, soldered them in, and now it works. You can find kits with the right capacitors preselected, or if you feel like it you can also buy them individually.

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Mar 02, 2009 | ViewSonic OptiQuest Monitor

2 Answers

Flickering screen with a claping sound...


From other posts here the repair kit appears to be just the 3 caps and instructions to unsolder the 3 blown caps and replace ( solder back in) the 3 new caps.
Once you get the back off the monitor and start taking it apart you will see 3 capacitors- they are labeled with 470uf25v- it is the only set of 3 caps.- in the power supply ( near where the 110 power plugs in). - Go ahead, take the monitor apart- look for the capacitors- do you see them? If it looks like unsoldering them and replacing them is something you could do- give it a shot, what have you got to loose.

to see pictures of capacitors and to find way more information than you probably want to know - check out www.badcaps.net.
- bad or blown capacitors seems to be a problem with motherboards and evidently monitor power supplies also.

I ordered my caps from Mouser.com- Shipping costs about the same as a gallon of gas and I didn't have to hunt them down.
I ordered their part number 647-UHE1E471MPD6.- There are lot of capacitors of this type listed and honestly I just nearly randomly picked one with the same spec and size- but a different brand since the original ones blew. These fit the existing holes on the board exactly and were the same physical size so they didn't get in the way of any other components when I reassembled the monitor.

look at the caps carefully or take a picture before you remove the old ones, to be sure you get the new ones in correctly- there is a positive and negative on them!

My monitor has been working fine since it was repaired in January- 5 months ago.


May 23, 2008 | Princeton Digital VL1918 Monitor

4 Answers

About the VL2018W (BLACK) Monitor soultion you posted


You need to replace 6 capacitors on the power supply board. Princeton uses CapXon brand capacitors which last about 1 to 2 years before going bad. CapXon are extremely poor quality capacitors, saving Princeton 10 to 20 cents per monitor.
This is the list of capacitors you need to replace. If they aren't bad now, they will be.
qty 2: 1000uF, 10V (DigiKey 565-1646-ND)
qty 3: 470uF, 25V (DigiKey 565-1677-ND)
qty 1: 470uF, 10V (DigiKey 565-1643-ND)

You can get United Chemi-Con replacements at DigiKey. The DigiKey stock number is listed on the above list. Since DigiKey didn't have stock on the 470uF, 10V at the time I ordered, I substituted a 680uF, 10V (DigiKey 565-1644-ND) which is a larger diameter, but will fit in the area provided.

Apr 08, 2008 | Princeton Digital VL2018W Monitor

18 Answers

Vl1918 it poweres on and shuts off.repeat


Just another voice to say that the solution provided here by others does indeed work.

Had same symptoms: screen comes on for about a second, a metallic popping sound occurs, screen shuts off for about a second, repeat. Problem occurs even if monitor is not plugged into computer (thus isolating it to monitor). Monitor purchased from Costco approximately two years ago.

Found 3 suitable 470uF 35V capacitors at the local Radio Shack for a little over $4 (more pricy than online, but no shipping cost, so it's a wash) Entire repair took less than 30 minutes.

The repair itself is already covered pretty well by others here, so I'll just add some disassembly instructions:

Set the monitor face down on a towel to protect screen. Remove 4 Phillips screws securing base to back of monitor, set base aside. Remove 3 Phillips screws from bottom edge of monitor cover. With flat screwdriver carefully pry along the other 3 edges to disengage the catches (about 3 per edge). Remove back cover. Identify the raised metal shroud containing the power supply module at center. Carefully lift one side of each piece of foil tape to expose connectors (for the short pieces of tape it's easier to remove the side that's laying flat, for the long piece at the top of the monitor, it's easier to remove the side that's vertical on the power module). Disconnect all cables, noting how to replace them later. Remove 4 Phillips screws securing the power module. Remove the power module and set the rest of the monitor aside. Flip the power module over, orient it such that the plastic covering is on the left (done only so that these instructions make sense). Carefully pull up the plastic cover from the right circuit board near the center of the power module, you can leave it attached to the metal shroud at the left side (it is difficult to remove from the metal without damaging it). Gently bend (without crimping) the plastic back and out of the way and remove the 4 Phillips screws securing the left circuit board (the one with the power connector). You will need a small "jeweler's" screwdriver for one of the screws - make note where that screw goes (top right of circuit board, or top center of overall module, when oriented as I did). Slightly tilt the left side of the circuit board up, and slide the circuit board out and to the left, over the bent back plastic, disengaging a connector from the neighboring board.

Then perform repair, and reassemble in reverse order.

Thanks to all who posted the original solution!!

Nov 15, 2007 | Princeton Digital VL1918 Monitor

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