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?
Re: viewsonic with a black square in the midle of the...
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.. :)
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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.
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.
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)
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.