Question about Scanport 821S 17" LCD Display Monitor

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Monitor problem where is the 1uf 50v cap. found?

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Near the plyback.

Posted on May 13, 2008

  • roney  trejeros
    roney trejeros Jun 19, 2008

    ITS BETTER TO COLDSOLDER YOUR MAINBOARD ALL OF THE PARTS OF YOUR TV,MAYBE ITS WORKING.

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2 Answers

My gateway fpd1530 comes on then goes right back off any sugjestions on repair or is it worth it?


15? not likely.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed HP monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague

http://www.badcaps.net

May 15, 2010 | Gateway FPD1530 15" Flat Panel LCD Monitor

2 Answers

It wont power up, i changed out the bad caps and it still wont turn on


If you can provide me the pictures of the boards then I can guide you more. Do you get any 5 and 12vdc on the caps?

http://s807.photobucket.com/home/budm/allalbums

budmrtn@aol.com

Apr 21, 2010 | Gateway FPD1530 15" Flat Panel LCD Monitor

2 Answers

FPD1530 comes on then goes off after a second. Found a burnt capacitor, is worth looking for a new cap or junk it?


Well, it is hard to find new 15" LCD monitors these day, new one are so cheap (and cheaply made also), it can be a good learnibg experience for some one who is learning electronics to try to fix it.

Jan 25, 2010 | Gateway FPD1530 15" Flat Panel LCD Monitor

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Monitor problem


u can open the monitor and find the 1uf/50v and change it.

May 07, 2008 | Scanport 821S 17" LCD Display Monitor

1 Answer

Nec LCD1720M


Replace the bulging caps:
C 701; 1000UF @ 35V
C 704; 1000UF @ 16V
other caps that may test weak and should be replaced are:
C727; 47UF @ 25V
C613; 10UF @ 50V

Jan 13, 2008 | BenQ FP737S-D 17" LCD Monitor

2 Answers

Monitor turned off and now will not restart (Power light flashing rapidly)


If your LG L204WT will not power up all of a sudden, or takes long to power up, or dies after a while and it has not been exposed to lightning damage then in all likelihood the Electrolytic capacitors in its power supply has started to fail.
Unplug the unit from mains. To open it up, remove the 4 philips screws at the back. Then starting at the bottom corner use a small flat screw driver to wedge the front bezel loose. After removing the bezel the rear casing will also come off the panel. The circuitry case is taped to the panel with silver tape. Loosen the tape, lift the power supply. Carefully unplug the two sets of backlight cables, and the front panel controls to completely remove the circuitry case. Now remove the 4 screws holding the power board and then replace the following capacitors:
You can order caps from most electronic component stores.
You will need to replace:
C105: Electrolytic Cap, 47uF 50V 105 degrees C
C106: Electrolytic Cap, 1uF 50V 105 degrees C
C202,C206: Electrolytic Cap, 680uF 25V 105 degrees C
C203,C204, C205: Electrolytic Cap, 1000uF 25V 105 degrees C
You can always use a HIGHER voltage and a slightly HIGHER uF, and HIGHER temp rating but never lower.
Make 100% sure to observe the polarity when replacing the caps. Electrolytic caps have a clear negative marking stripe on the side coinciding with a black mark on the board.

Nov 27, 2007 | LG L204WT LCD Monitor

6 Answers

Dell Blinking Power Light


Just wanted to say Thank You for the info on this site. I had the same problem as previously posted. When powered up, the monitor showed a fast flash of the desktop and then went black, with the power indicator flashing green. I read the posts, purchased the capacitors and the 4 - 2sc5707 transistors through ebay. I ordered them on the 6th and rec'd them today. I only had one bad capacitor and one transistor that checked bad, but I ordered 5 caps and 4 transistors. When ordering the caps be careful of the height of the caps. I found this to be a problem because I ordered the 50v, 105 degree Panasonic caps that didn't fit with the enclosure attached, so I used the 4 good caps removed previously and replaced the bad one with a 470uf, 50v. 85 degree cap from Rubycon I found among my spare parts. Installed the parts and the monitor is working properly (for the last two hours) so I'm happy for as long as the repair lasts. Thanks again for the info.

Dec 05, 2006 | Dell E173FP 17" LCD Monitor

2 Answers

My LCD power light flashes orange and screen is blank and there is afaint ticking noise coming from the monitor. Can anyone help?


Due to still having a power light you can bet the power supply is still fine.
The problem will be in the inverter circuit, but more to the point it's actualy one of the CCFL tubes that has blown.
They can be easy to replace, they can also be a complete nightmare.
Hope that helps =)

Sep 21, 2006 | HP Compaq FP 7317 17" Flat Panel LCD...

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