Question about ViewSonic VX924 19" LCD Monitor

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VX924 Blown Fuse

Hello, i recently bought a VX924 that has a blown fuse. i thought it would be easy and just replace the fuse but it the moment it plugged it in. Has anyone else fixed the monitor having similar symptoms?

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What are the symptoms? How do you know the fuse was blown on the monitor you bought? The fuse on vx924 is soldered onto the circuit board. If you have any symptoms that require power its probably not the fuse. The back lighting on this unit has a problem. Three 25v 470uf caps on the circuit board are underrated and have a tendency to go bad. Replace them with 35v 470uf caps.

Posted on Jan 26, 2009

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My fujitsu plasma tv has sound but no picture


check connections most likely culprit is a blown fuse on the screen mainboard very easy to replace but must be soldered unless you use a little bit of copper wire twisted and rolled up to cover both ends of the internal fuse then stick it down with insulation tape but do this at your own risk

Apr 01, 2012 | Fujitsu Siemens PlasmaVision Computer...

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NO POWER


Look for bad caps as shown in my pictures here: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VX924/

If you are going to DIY and already try the monitor with another PC, and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, 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 monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/
Post back what you see inside so we can guide you further and it will help out other people in the future also.

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 16, 2011 | ViewSonic VX924 19" LCD Monitor

1 Answer

The monitor (viewsonic VX924) shows the desktop (5-10 sec)and then fades out to black. If I power the monitor off/on then I get desktop again for a few sec. How can I fix this?


Look for bad caps: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20VX924/

Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx

If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses; poor solder joints, 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 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

Aug 07, 2010 | ViewSonic Computer Monitors

1 Answer

I have a flat panel lcd 19, it doesn't power on


Don't know what model you have, but I would check the fuse first. It should be marked with a Fxxx where xxx are numbers. Sometimes the fuses are glass, others times they look like little surface mount chip types. If you find that a fuse is blown, does not mean that just replacing it will solve the problem, you need to figure why the fuse has blown, typically the FETs short out. Hope this helps.

Jul 15, 2010 | Westinghouse 19" Widescreen Flat Panel LCD...

1 Answer

My envisaion monitor only shows white light


There are two causes for white screen: The connector has worked loose, or the lcd panel 5 volt fuse has blown. 98% fuse blown is not repairable. Must replace the lcd panel.
Monitor Mike

Apr 01, 2010 | Envision 19" Widescreen Flat Panel LCD...

1 Answer

Screen is whited out, with or without being plugged into the video card, if i power on and off i can see a distorted image then it whites out again


You have some blown capacitors on the power board, take it apart and replace all the blown capacitors problem solved... hope this helps

Dec 26, 2009 | ViewSonic VX924 19" LCD Monitor

1 Answer

ViewSonic Vx924 No power


Hello,

If youcan take a picture or two of the boards in your system as close and clear as you can and go to our web page and email them to me I will check and see if we can help you find the problem.

Buddy
Corporate Computer
www.ccl-la.com

Aug 14, 2009 | ViewSonic VX924 19" LCD Monitor

1 Answer

Same thing.


Hello,

If you have the 2 blown capacitors on the power board then most likely yo also have blown MOSFETs and a blown fuse. The MOSFETS and fuse blow when the capacitors short out when they blow. We sell a kit with the capacitors, MOSFETs and fuse with instructions for $10.00 plus shipping. Let me know if you need a repair kit.

Buddy
Corporate Computer
www.ccl-la.com

Jun 25, 2009 | Westinghouse 22" Widescreen LCD Flat Panel...

1 Answer

Monitor problem


the most common solution is that the board inside has blown capacitors. replace these ad you should be ok.

Mar 29, 2008 | ViewSonic VX924 19" LCD Monitor

2 Answers

Fuse blown repeatedly on CB553H-KL


Hi,

Re your post/description on an LG CB553H-KL fuse blowing, this is indicative of an over current (>5Amps) flowing through the AC mains supply. If you are comfortable doing component level repair and familiar with electronic parts/circuitry, continuity tester and a soldering iron, please do passive (off-board) test of the following components:

D900 - bridge diode;
C908 (150uF/400V) - filter/power capacitor;
Q901 - regulator.

If Q 901 is shorted, pls likewise check ZD901, D910, R902 & 915.

Just to be sure/safe, check also:
C901, 902 & 904;
TH 901 & 902;

Though unlikely, you may want to check also:
Q706 - Horizontal out transistor (attached to the aluminum wall acting as heatsink;
FBT - Flyback transformer.

Other than the component aforementioned, no other parts would cause enough current flow to blow the fuse. But of course, anything can still be wrong

Hope this be of some help. Pls post back how things turned out or should you need additional information.

Good luck and kind regards.

Nov 16, 2007 | Compaq FS 7550 17" CRT Monitor

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