Viewsonic n3250w HDMI display has out-of-sync lower quarter

Go into the video resolution setting of the laptop and adjust the settings for a full picture. If memory serves me, this is a 720P TV so try setting the laptop resolution to 1280 x 720.

1. Connect the PS3 standard composite video connector (yellow RCA plug) to the TV composite input and switch the TV to that input. Leave the HDMI cable connected.
   
2. Make sure the PS3 is off. Turn it on and hold the power button until you get two beeps (at least 5 seconds). The PS3 navigation screen should be shown on the TV. If not, switch the TV back to HDMI; the screen should be displayed at 480i resolution.
   
3. Go to the settings menu. Select Display Settings, then Video Output Settings, then press the X button on your controller.
4. The on-screen instruction should be "Select the type of input on your TV." Select HDMI, then press the '> (solid right triangle) button on your controller.
5. You will be offered the choice of Automatic or Custom settings. Try Automatic first (if there is a problem at the end, start over and pick Custom the second time).
6. Press the X button. You will get a screen asking you to confirm the changes. Press the X button again to confirm.
7. You may get a screen asking for the resolution setting. IMPORTANT: if your TV's maximum resolution is 720p or lower, do not pick a higher resolution. The TV may not display properly or may not display at all (blue screen). Pick the highest resolution your TV can display.
8. Confirm this by selecting "Yes" and pressing the X button.
9. The settings list should now read Connector Type HDMI; Resolution Standard (NTSC); 480p; 720p; 1080p (if applicable). Press the X button to confirm.
10. You may be offered a choice of audio outputs; you can use HDMI or something else, depending on your setup. Confirm the setting and press X one more time.

At this point, the PS3 should send its signal to the HDMI port following restart. If your TV has more than one HDMI input, make sure you select the one connected to the PS3.

two things you can do, first right click on your windows screen and look for "settings" this will open a dialog box where you can set the screen resolution. Set it lower and see if your screen is now filled. if that doesn't work go into the monitor setup (buttons on the bottom or side of the monitor) and try to set the verticle and horizontal size, since its only 3/4 of an inch you should be able to stretch the screen to fill up the space.

Your cable box and TV are set to different resolutions. Check the setup on both and make sure everything is the same (ie 720p to 720p or 1080p to 1080p) Make sure your cable box can give you 1080p (Nice set, BTW!!). HDMI is supposed to automatically take care of the settings, but it does not hurt to double-check.

Depending on the manufacturer of the cable box, there may be screen setting for "letterbox" which should be selected.

Some TV channels, when redirected through a cable box, simply will not display full resolution (1080p) programming. Your cable TV provider can tell you which channels are displayed in high resolution.

Finally, make sure your cable provider gave you the correct box. Older boxes are not capable of providing 1080p resolution, and since you own a 1080p set, you deserve nothing less!

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

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

your dvd is set to 480p. if it is a convertable dvd player set it to 1080i. the tv sets itsef to whatever the dvd player displays. if not all dvd is 480 to 720 p. blu ray will get you top notch 1080 display.

Adjust the system's video output settings. Select the best output settings for the TV in use.

1. Check the resolution supported by your TV.
Resolution (video mode) varies depending on the TV type. For details, refer to the instructions supplied with the TV.

2. Select (Display Settings) under (Settings) in the home menu.

3. Select [Video Output Settings].

4. Select the connector type on your TV.
Resolution (video mode) varies depending on the type of connector used.

Input connector on the TV Supported video modes (NTSC region) *1 Supported video modes (PAL region) *1
HDMI 1080p / 1080i / 720p / 480p 1080p / 1080i / 720p / 576p
Component / D-Terminal *2 1080p / 1080i / 720p / 480p / 480i 1080p / 1080i / 720p / 576p / 576i
Composite / S Video *3 480i 576i
AV MULTI / SCART *4 480p / 480i 576p / 576i
*1 The video mode options vary depending on the region where the PS3™ system was purchased. In North America, Asia and other NTSC regions, 480i video mode is displayed as [Standard (NTSC)]. In Europe and other PAL regions, 576i video mode is displayed as [Standard (PAL)]. For details, refer to the instructions supplied with the product.

*2 D-terminal is a connector type used mainly in Japan. The resolutions supported by D1-D5 are as follows:
D5: 1080p / 720p / 1080i / 480p / 480i
D4: 1080i / 720p / 480p / 480i
D3: 1080i / 480p / 480i
D2: 480p / 480i
D1: 480i

*3 Composite is the connector used to connect the AV cable that is supplied with the PS3™ system. S VIDEO is a format mainly used in Japan.

*4 AV MULTI is a format mainly used in Japan. SCART is a format mainly used in Europe. If [AV MULTI / SCART] is selected, the screen allowing you to select the type of output signal will be displayed.


5. Change video output settings.
Change the resolution for the video output. Depending on the connector type selected in step 4, this screen may not be displayed.

6. Set the resolution.
Select all resolutions supported by the TV in use. Video will automatically be output at the highest resolution possible for the content you are playing from among the selected resolutions.*
* The video resolution is selected in order of priority as follows: 1080p > 1080i > 720p > 480p/576p > Standard (NTSC:480i/PAL:576i).
If [Composite / S Video] is selected in step 4, the screen for selecting resolutions will not be displayed.
If [HDMI] is selected, you can also select to automatically adjust the resolution (the HDMI device must be turned on). In this case, the screen for selecting resolutions will not be displayed.

7. Set the TV type.
Select the type of TV in use. Set when only SD resolution (NTSC:480p / 480i, PAL: 576p / 576i) is to be output such as when [Composite / S Video] or [AV MULTI / SCART] is selected in step 4.

8. Check your settings.
Confirm that the image displayed is at the correct resolution for the TV. You can go back to a previous screen and revise the settings by pressing the button.

9. Save your settings.
The video output settings are saved on the PS3™ system. You can continue on to set audio output settings. For details on audio output, see (Settings) > (Sound Settings) > [Audio Output Settings] in this guide.

The TV has a automatic scalier chip installed so it depends on the input signal that you are using. For example you are using a HDMI connection with a xbox 360 and you set the display setting to 720P then the TV will display it in 720P. If you set it to 480P then it will display it in 480P.

ok, i got it working... Ok...your problem is probably that when you're using it on the HDTV...you have the resolution set to an HD one (720p, 1080i, 1080P). A normal TV cannot display these. While it's connected to the HDTV,Before you connect it to your normal tv, you have to switch it back to 480i or 480p otherwise, your regular tv wont show a picture. So go to settings, display settings, and uncheck 720p, 1080i, 1080p. It will ask you if these are the settings you choose (and it's going to look funny on your HDTV) Accept the settings and turn it off. When you connect it to your Regular TV, you should now see a picture. Hope this helps!