Question about ViewSonic N2751W 27 in. LCD Television

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Hi,I previously had a reply to a dead condition on a viewsonic N2751 power board , all the caps in the secondary were replaced,I replaced the suggested diode (D1) but this did not fix it.Is there any other solution? or should I just replace th board.

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  • ViewSonic Master
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Disconnect everything that is attached to the secondary lines and check their voltages - if they're dead then check the power transistor, if it's dead replace it. If even after you have replaced all the failed power transistors the source is still dead then the transformer is shorted - replace the entire board.

Posted on Sep 06, 2010

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2 Answers

I can hear but I can not see,is black, please help me


Tv first turn on the tv have a flashes of a picture a few sec,than died have audio left only?Yes,take ur tv aparts and carefully check ur tv power supply board that board where the tv power a/c cord plug into it.Carefully check the tv power supply board for dying capacitors components parts.If have dying capacitors components it usally have bulges or puffing up on to it tops.Tv could have 1 or 2 long boards that are call the LCD inverters board are dead too.If the tv power supply board it is good and have no dying capacitors parts are bulging up or puffing ups on to it tops.The tv 100% have those 1 or 2 long LCD inverter boards are dead.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish tv power supply board or those 1 or 2 long LCD inverter backlight boards for the replacement.

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The view sonic VA1701WB display is totally white on the screen during up the computer and i check the CPU is booting up but at the same time monitor screen is totally white please reply the reason.


It can be due to:
Dead T-CON board on the LCD panel assembly due to blown fuse or just dead board.
Dead power supply on the logic board that supplys the power to the T-CON board.
Learn more here:

Basic LCD monitor troubleshooting guide:

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague

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1 Answer

How do I replace the power supply board on my viesonic N2751?


hi! to replace the power supply you need to remove the back cover of your tv..once it is remove you can see the power supply...all its wirings are detatchable with connectors...and color coded be very carefull not to interchange them...


good luck! hope this could help you...

your rate is important to this help tnx.

Apr 24, 2010 | ViewSonic N2751W 27 in. LCD Television

3 Answers

I have one view sonic va1912w-4 monitor. No power from 2 days. So i can checked power cable but problem is not rectifide.What can i do check next step.


Its either going to be the power board or the main board, My assumption would be the power board since those are the more lilely culprits to go out on those monitors.

Since neither one is readly available, check the fuses on the power board and then also see if there are puffy caps. If there is then replace them with ones that are the same UF rating and same or highter voltage.




Apr 21, 2010 | ViewSonic VA1912wb Monitor

2 Answers

I pushed the button next to the power button now i have no screen, i pu7shed the button again but to no avail, please help


Common failure is the caps in the inverter/power board, look for caps with bulging tops, see example of failed VIEWSONIC monitor due to bad caps: http://s807.photobucket.com/home/budm/allalbums

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2 Answers

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The problem you have sounds like the inverter board has failed it can be repaired by replacing the inverter board which may be a cheaper option than buying a whole new monitor, you can do a search online for lcd repairs and spares to find the part you looking just state your make and model and price one up.

But before you do do that, and you feel confident that you could take the back cover off the monitor, you could have a look for blown capacitors, they are quite a comman fault in lcd monitors, once the back cover is off check the power supply board, it will be where the power cord plugs into the monitor, The capaciters are barrel like in shape with silver tops, check for any leakage from them or on the board surrounding the capacitors, also make sure they are fully flat at the top, if they are slightly domed or pretruded they will need to changed. post back your findings if you do find any bad caps ill will try to explain how to get the right ones and what do to. cheers.

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2 Answers

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The viewsonic monitor is a good unit.
If the unit takes more than 30 seconds to power up, you have a problem with the power supply and will have to be repaired.

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Picture problem


Having the same problem, storm the night before? Mabye lighting

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