Question about ViewSonic N3250W Television

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Viewsonic N3250w. Power supply went out and I replaced the bad capacitors. TV worked for a week then now when I turn it on, the screen just turns on and off

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Check to see if the 24vdc disappear when the screen black out, it is always there then you have problem in the backlight inverter board. Did you replace the caps in the 24vdc supply also? I replace the whole set.
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20N3250W/

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for yo

Posted on Sep 05, 2010

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Hello, MY ViewSonic N3250w LCDTV Display works fine but turns itself off after about an hour and 40 minutes. If I turn it off for a minute it will turn back on, but turns off again soon. Any suggestions?


It may have bad solder joints, failing components such as bad DC filter caps which is very common to this model as shown in my pictures here: http://s807.photobucket.com/albums/yy352/budm/VIEWSONIC/Viewsonic%20N3250W/

Or you can Google the power supply problem with this model.

So the power supply module will be the first place to check.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: www.interliquidparts.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
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.

Aug 02, 2011 | ViewSonic Computers & Internet

1 Answer

My Viewsonic N3250w tv I have had for 4 years no longer powers up. If you hit the button it lights up around the switch but then almost immediately powers back down. Does this sound like a power supply...


Power supply module will be the first thing to check, look for bad caps, find out if it has standby 5vdc and other voltages.
http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20N3250W/
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.

Oct 05, 2010 | ViewSonic N3250W Television

2 Answers

N3250W is turning on and off every 5-10 seconds. I have cycled power with no change.


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Feb 13, 2010 | ViewSonic N3250W Television

2 Answers

Viewsonic N3250W I replaced the power supply board but when I turn on, the screen flashes real quick and there is no picture.


it was not the power supply its the invertor board that controls the back lighting/switch on screen flashes lights go off/shine torch into screen ull see picture/get new invertor board 7 or 8 little plugs go into it

part or repairs in uk ohm supplies

Jan 08, 2010 | ViewSonic N3250W Television

1 Answer

Viewsonic N3250w no power


Look at the power supply first; look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Parts: http://www.shopjimmy.com/catalogsearch/result/?q=ViewSonic+N3250W+
Please post back what you find

Dec 06, 2009 | ViewSonic N3250W Television

1 Answer

ViewSonic N3250w


The defective power supply module will cause the following symptoms:
No Display and no Sound, Then Power indicate light changes from Green to Red.
Turns OFF by itself.
Needs to be unplug to make it work.
Works for a few minutes then turns OFF.
I repair these power supplies, if you need further assistance jah2mil@hotmail.com

Aug 22, 2009 | ViewSonic N3250W Television

2 Answers

No power to TV. Will not turn on.


replace the power supply about 60.00 dollars from viewsonic

Jan 15, 2009 | ViewSonic N3251w 32 in. LCD HDTV

1 Answer

No picture on N3250W viewsonic


I just had a viewsonic supply all apart with a blown capacitor, I believe c36. q7 a surface mount npn transistor on the solder side of board was shorted. Replaced cap and transistor, set works fine. Also, check all your electrolytics on this board as they sometimes swell and go bad.

Jan 07, 2009 | ViewSonic N3250W Television

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