Question about ViewSonic N2750w 27 in. HD-Ready LCD Television

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Viewsonic with a black square in the midle of the picture

What the heck
I ran into this once before with a direct tv job but I can't for the life of me remember what I had to do to fix it.
I think it was some obscure setting in the tv menu but I don't recall now.
I have not yet gone to this customers house but I thought I would get some input before rolling out there.
My guess would be a picture in picture issue with only one input live from the receiver but I remember the one I remember from a couple years ago the balck box was dead center in the screen which doesn't seem a pic in pic issue. Could be wrong it has happened before. Any advise?

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  • mainstreet11 Nov 17, 2008

    Ihave the same problem. Change channels it goes away but comes back in a few minutes


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Fixed it. It was a loose S Video wire

Posted on Nov 30, 2008

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I spoke to someone at Best Buy yesterday because I had the same problem. In your TV functions you have a text box on. You have to change this to off or to a closed caption setting. Hope this helps.. :)

Posted on Nov 30, 2008

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Samsung flat screen tv no picture sound only, I have checked all connections and remote still same problem.

The T con board is faulty. It is the board with flat ribbon cables going to the bottom of the screen. It is not hard to replace this board. You can get one from here:
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ViewSonic 37" Wide (N3733W) TV Set that is connected to Direct TV has picture but no sound.

Based on your description, it is possible that the power supply is starting to go. Before doing anything, first check to see if it is the TV or the source. Use a few different sources to narrow down the problem. You didn't mention what type of hookup you used from the receiver to the TV. Assuming you are using HDMI, it is possible that the cable is intermittent. Try using a different one. Also try as below.
1. Once the TV is working with sound, what happens if you turn the TV off and then back on, is the sound still there?
2. Use the TV antenna input to see if you can replicate the problem using an antenna. If the problem is indeed the TV, it should do the same with the antenna.

Feb 17, 2013 | ViewSonic Televison & Video

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Dell tv, wont come back on after warmed up.

Worked on a number of these sets and what do they have in common:

Main board problems with flatpacks (surface mounted chips) that are just badly soldered to begin with and or go bad with a short life (2-3 years).

The other common thread seems to be many of the sets no boards, no parts, no schematics are available.

What you can try to confirm or even locate the area where your problem is to take a small fan (I use one of the clamp style fans about 6 inches in Diameter and with back off place it over main signal board---I have done this and it can work for a while at least--even if you local it to one area of one board that board many times is not available.


May 22, 2012 | Televison & Video

1 Answer

Will any ViewSonic remote control work on any ViewSonic tv

No, most of them you will have to program it to work with other model of Viewsonic TV.
You have to go to WWW.VIEWSONIC.COM to the get the info for your model of the remote you have.

Basic LCD monitor and TV troubleshooting guide:
Failed TV and Monitors pictures:
Learn about bad caps:
Capacitors kit: he can make you a set of caps.
Or, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.

Oct 30, 2011 | ViewSonic N3251w 32 in. LCD HDTV

1 Answer

ViewSonic N2750 The image will come on for a second and then go away. I have audio but no picture. What could it be

Most likely a small surface mount fuse near the inlet of the 24v rail needed to light the tv with the backlight inverter. You may also have a CCFL bulb that is going out. If they run in a series then one bulb that is old and burning out will power down the rest of the bulbs (I ran into this problem with a 42" samsung once and that fixed it)

Thank you

HOPE this helps :)

Mar 07, 2011 | ViewSonic N2750w 27 in. HD-Ready LCD...

1 Answer

A grey square in the top left corner

This TV dose have PIP (Picture in Picture), Press the PIP button on the remote and see what happens. If fail then I would recommend to call Viewsonic.

Apr 26, 2009 | ViewSonic N2750w 27 in. HD-Ready LCD...

1 Answer


just press the "PIP" button on the remote it happened to me and i just thought that it looked familiar and i pressed it and it worked hope it helps :)

Nov 19, 2008 | ViewSonic N2750w 27 in. HD-Ready LCD...

1 Answer

Black square

Your closed captioning is on. Go into your settings and turn it off. some caption modes take tend to do that. My bro had the same problem and it went away with the setting changed

Feb 22, 2008 | ViewSonic N2750w 27 in. HD-Ready LCD...

1 Answer

Black squares or rectangles over picture

It's the closed captioning. The reason it doesn't go away when you press the "caption" button is because there are four option for closed captioning: Text 1, Text 2, Text 3, and Text 4. The fifth option, which has no designation, is the "off" option. Using the remote, just click on the "caption button until the option has no designation.

Mine was a large black rectangle in the middle of the picture. It's not like Nina3's problem.

Feb 01, 2008 | Polaroid FLM-3734B 37 in. LCD HDTV

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