I have the above tv viewsonic n3260w and lost the picture but kept the sound any ideas what may have happened

You may have to decide whether it's cheaper to repair the old TV (if you can find a shop) or just buy a new one.

The tv T-CON board only board left could causes this problems.That the board usally sit at the middle at the botton of the LCD screen panel.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish T-CON board for the replacement.

You need to find out if it is putting out the 24vdc needed by the backlight inverter board, you may have bad shorted out inverter board that may have taken out the fuse, you need to do some probing.
Power supply pin out: http://www.fspgroupusa.com/images/specs/FSP228-3F01_SPEC.pdf

Power supply: http://www.shopjimmy.com/fsp-fsp228-3f01-power-supply.htm

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.

Check to see if you do have 12vdc from the power supply and atthe T-CON board's fuse. Worst case wilbe he LCD panel.
If you are going to DIY and have proper tools, knowledge of electronics 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

More likely to have failed power supply module.
http://www.shopjimmy.com/catalogsearch/result/?q=N3260W

You can download the spec of the power supply to get the pinout for voltages checking.
http://www.fspgroupusa.com/fsp2283f01/p/641.html

If you are going to DIY and have proper tools 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

Check this site to find the power supply for your TV.

Hi,
You can buy power supply board/ module of Viewsonic N3260W from Shop Jimmy on special price, $65 only.
Thanks.

I do not know the exact value but if you trace out the copper trace from the rectifier output, it should go to the first filter cap and then there will be an inductor and filter cap after that, you can figure out the voltage rating from there. You can get the parts here: http://www.shopjimmy.com/catalogsearch/result/?q=ViewSonic+N3260W
Look here about caps: http://en.wikipedia.org/wiki/Capacitor_plague

Pictures of the power supply will help. [email protected]

Hi red recruite,
I am happy to help.
The blue box is the Picture in Picture function. Press the PIP button on remote till gone.
The No Entry Sign on the inputs is because nothing is connected to these inputs.
Unless  I an mistaken you have only a HDMI cable connected.
Let me know if I got it right and please rate this solution. Please keep in mind that Thanks For Trying rateing is negative.
Lone99star

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/jason_77a19afa8d604dee

We got the part in today and the hubby fixed the tv. It is as good as new. We are very happy with our $62 purchase.

Go to http://store.ramplus.com/fsfspopfrpos.html

FSP228-3F01, FSP Open Frame Power Supply Replacement for Viewsonic N3260W - 32" LCD TV

It worked like a charm and took about 10 minutes to put in new part and put tv back together.