Question about ViewSonic VA720 17" LCD Flat Panel Monitor

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I have a viewsonic v1716w when turn on it works fine after 15 mins a horizontal black bar appears at the bottom of the screen .wanted to know if its the electrolytic capacitors in the power supply are faulty or its another problem ? please help . thanks

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The power supply caps will be the first thing to check, then also check for steady 5vdc and 12vdc.
The problem can also be in the T-CON board (part of the LCD panel).
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

Posted on Jun 08, 2010

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Samsung LN32D403E4DXZA works for 30-90 min. Fine, color horizontal lines appear and a clear band at the top slowly spreads to the bottom. If off a while, turns on OK, but cycle repeats. Is it TCON?


Generally horizontal bars are signs of panel issues but you could try baking the tcon board in the oven and see if that helps since it works for a few mins...sounds like a heat issue if its not that panel

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How do I get rid of vertical black bars on a plasma television


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ViewSonic VA2226w, horizontal light coloured lines through image regardless of resolution. They get worse when the monitor has been running for a while. Display otherwise working, powers up and down fine...


The lines appearing on the screen have nothing at all to do with the resolution. If the OSD display is correct (when the LCD is not connected to the PC), then the possible issue could be the RAM. Open the PC case and check if you have more than one RAM stick. Try using one RAM at a time and swaping RAM slots to see if the display is shown correctly. Make sure that the PC is turned off and power is disconnected before you remove/ install RAM. Most of the times lines appearing on the screen are due to faulty RAM. I suggest that you may also connect the LCD with some other PC to check if the issue is with the LCD or not.

Let me know if any further clarification/ assistance is required.
Hope it helps! Good Luck!
Don't forget to convey your feedback
CreativeTECH

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1 Answer

Horizontal black bar on screen and no sound


It's probably overheating (fan is broken)

You can get a third party to replace it if you want, but I would actually recommend sending it to Nintendo.

Unlike Sony and MS, Nintendo has awesome repair services. They will do any repair under (1 year) warranty for free and if it's not under warranty then they will still do it for cheap. It cost me something like $96 (in Canada) after shipping.

They are also very quick, usually in a week you'll have your system back.

The best part is, whether your system is under warranty or you pay for the repair, you get a renewed 1 YEAR warranty with Nintendo, this is far better than Sony and MS who only do 90 days!

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1 Answer

View Sonic monitor


I have Viewsonic 15" CRT Monitor (model E53)

When power ON, ther is only a colour patch appears on the middle of the screen . I observed some resistors and three transistors in horizontal sections were burnt.
I cannot read the real values of them because they are burnt.
Please kindly can you tell me those real values in that section.

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1 Answer

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Sounds like the logic boards on its way out

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What is wrong with your monitor is that the Horizontal section is going faulty, the lines you are seeing are the Horizontal Retrace lines, usually invisable in a working unit. It is often a faulty capacitor(s) OR a Diode breaking down.. in the area of the Flyback Transformer. Probably time for a new one unless ya can fix it yaself.

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1 Answer

Screen split with black bar through center, top of picture shows in bottom


It sounds as you desribe, the vertical output IC and or the b+ feed capacitor off the Hi voltage transformer feeding the vert. IC its required voltage. Not a really hard job to replace, but not for a handi person to do. This should be left to the professional, as there are no user serviceable parts inside this set and with the HI voltage and the safety issues its best to call somesone to assist you with this repair. Good Luck

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