I need a Main board for a viewsonic N2750W - ViewSonic N2750w 27 in. HD-Ready LCD Television

Hi,

You could order a substitute remote ( as original is not available any longer ) from :-

http://remotes.com/store/viewsonic/n2750w.html

If you want to buy universal remote, be advised that for Viewsonic it would not be too successful and moreover, the one which is compatible ( Harmony ) would be expensive.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Ur LCD inverter board is dead.Replaced this inverter board will get ur picture back.Tries Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter board for the replacement.It a long shape board.

Ur LCD inverter backlight board is dead.Replaced this LCD inverter backlight board will solved this problems.Tries Websites Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter backlight board for the replacement.The board is a long in shape.

Look at the power supply first; look for burnt parts, bad capacitors, etc. Look for 5vdc, 12vdc, and 24dvc.
http://en.wikipedia.org/wiki/Capacitor_plague
If you do have the voltages then the problem can be the main controller board.
Parts: http://www.shopjimmy.com/catalogsearch/result/?q=n2750w
Please post back what you find

The class D sound amp circuits are bad, it is part of the main board, very expensive, this is a common problem with this model, I fixed two of them, usually after 30 minutes it will soud like motor boat.
http://www.shopjimmy.com/main-unit-jc278a61u-from-viewsonic-n2750w-2.htm

Hi
Go here for an invertor you seek. Is from a different make/model, but is the correct part,
Thanks for using FixYa. Good luck with your repair.
regards robotek

apollo did you fix your bug?
is it a on/off issue?

these boards are not componet level repaired so any componet could be at fault. almost all of the componets are SMT and are difficult to replace. it's easier to replace the board. some of the DC to DC inverters are not sold seperately and are a part of the whole panel.

Go to ViewSonic at:
http://www.viewsonic.com/support/userguides.cfm

Enter your serial number or "n2750w".
Provides PDF document.
Save to your computer by clicking the "disc" icon at the top left of the Adober Reader screen.

Could be a problem with the down volume button on the tv. the board it's on ir its harness. Check them all. Make sure the volume buttons plastic actuator moves freely and is not stuck.

If these parts are all good, you have a problem on the main board. You may have to trace the control lines as far as you can and check any capacitors along the way. If you have an oscilliscope you can test the lines to see if the up volume is working correctly. If there is noise on it, you might find a bad capacitor if you can trace it back far enough. Schematic helps here.

Of course, make sure nothing is shining on the sensor window on the TV. You might want to scope that line as well (IR sensor line).

If none of that helps, get hold of Viewsonic and find your closest service provider. You can order a main board from them.

Of course, you could try just using the audio out jacks to an amplifier or a surround sound amplifer. Then you would use the remotecontrol for the surround sound system to control your volume.
Bet you were going to buy one anyway right?