I have a viewsonic n3250w that won't turn on. where do I start?

SOURCE: Viewsonic N3250W I replaced the power supply board

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

SOURCE: viewsonic N3250W- turns on, the screen flickers on then its black

This could be a problem with the tv's memory. Try resetting the TV. Unplug the unit for a few seconds (10-60). Then restore the TV to the factory default settings. Viewsonic has changed it's menus at intervals so you may have to check your manual. It may be Menu > Setup > Memory Recall or Menu > Options > Restore Default (or something slightly different). From there, click enter, use the right or left arrow to select YES, hit enter. Leave the menu system (Menu twice). Then hit Menu > Channels and rescan all channels.

An alternative cause of the problem may be a weak signal - check that your antenna is pointing right at the station and is the correct type to get the signal at the distance you are from the station. (Usually a weak signal would also have the audio breaking up but weird things can happen.)

I hope this helps.

Cindy Wells
(who recently had a channel pair that started out with flickering signal issues and then had one channel lose video and the other audio. The memory reset and rescan resolved the problem.)

Bud Martin

• 11361 Answers
• Posted on Jul 22, 2010

SOURCE: My television (viewsonic n3250w) started turning

You may ahve either the main logic board problem or the power supply module problem, look at the power supply first since it is easy to do without much tools needed, look at the DC filter caps fopr leaking/bulging tops (notes: cap can look OK but may have high ESR whcih you will need caps meter taht can measure ESR).
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

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

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

Parts: www.shopjimmy.com

Please post back what you find.