Question about HP Pavilion F1903 19" Flat Panel LCD Monitor

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Hp monitor, same problem...

How do I get the monitor apart to replace power supply or capacitors? Can I get those capacitors at radio shack?

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Hi,
Sure you can. As long as you what the value of the capacitor.
Or you bring it to the radio shack showing the sample.
If don't know how to open it . You can visit this site:

www.lcdrepair.us

There video clip inside where will teach you how to open it.

Posted on Apr 18, 2008

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Hello,

Two things, First you need to replace all of the capacitors on the power supply board at the same time even if they do not show signs of failure because they have been under stress. Secondly, you need to use the correct ratings on the capacitors not just the mfd and voltage. Parts from Radio Shack and such will not work right and can cause additional damage to the power supply board. Here is a link to an article about getting the correct capacitors for LCD monitor repairs.

http://www.ccl-la.com/blog/index.php/capacitors/

I hope this helps,
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This is the same issue I had AND....you can fix this by replacing 5 capacitors in the screen Power Board, So here we go: go to Radio Shack or similar store that sells capacitors and buy (3) 220 Microfarad capacitors Radio Shack Part Number 272-1029 and (2) 1000 Microfarad capacitors PN 272-1032. Now on your board you will see the bulging capacitors just remove them and replace them with the new ones. PAY CLOSE ATTENTION to the polarity, there is a negative stripe on the side of the capacitor. Make sure it goes back in the way the old one came out. Now the radio shack capacitors are 35vdc and the stock capacitors are 25vdc and the new capacitors are bigger in diameter but the difference is ok as long as the Microfarads are the same. Mine were replaced and all is well now

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The capacitors BigTech referred to are C110 & C111, 820uf-25V Electrolytic, on the power supply board.

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In mine, there was a 1000 micro F capacitor in the power supply board that was damaged. You can tell which one it is by looking at their top. The bad one looks like it inflated and blew up.
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I have repair many Westinghouse monitors. You'll need a set of hardened plastic pry bars to remove the bezel. You'll need an ESR meter to test the capacitors in the power supply. You'll need an static isolated soldering iron the replace the capacitors. The capacitors you can get at a local radio shack. I do these repairs daily and they're not as hard as it seems.

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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.

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What i would suggest is taking those numbers going to your favorite search engine and entering them. Alot of times search engines can give data concerning hardware parts just by there manufacture number. This will give you a foundation to find what that particular part is and also maybe a replacement part. A word of caution about working with capacitors. Even after power has been off for several hours they can still hold a deadly charge. If you have a volt meter I would use it to test the part before even thinking about it. Capacitors are nothing to mess with unless you have proper knowlege on how to handle them and discharge them.

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