A large black block fills the screen leaving only an inch of the picture. The sound still plays. Turning it off and back on the picture is fine for a few seconds then the block comes on again.
We have a magnavox with smart sound. It is turning on and after a few seconds, a large square black block comes in the middle of the picture with the sound and a rim around with the remaining picture still showing.
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Look for a setting called Aspect Ratio. It will include options like 4:3, 16:9, Zoom 1, and Zoom 2. Then click through the options to select the correct one for your program. Usually older SD programs will use either 4:3 or Zoom 1, while HD programs will be set to 16x9 for Widescreen hi-def viewing. There should be a button on your remote labelled Aspect Ratio or Picture that can toggle through these image modes.
Without a picture of it it's hard to say what you mean. Sometimes on a CRT TV the vertical scan doesn't fill the screen, but that would cause a black band both top and bottom. The usual cause is a capacitor drying out. But only a qualified tech should look into that.
Could be ethier one the dish box or the tv itself have cold solders joints on the FBT-Flyback transformer.That the big black block of plastic with a red wire with a black cap hook to the CRT-(tv tube).Call ur tv Dish box customer service,get a replacement box.See, if this will solved ur tv problems.If not,than the tv must be taken aparts and must have tools like a soldering iron,a roll of solders,also must know basic soldering.Resolders all the coldsolders joints on the FBT for a better High voltages contact to the CRT-(tv tube).This problems,will be solved.
checked the vedeo section of the main PCB of the unit, maybe some defective parts, try to look the back of the picture tube if theres a light, if none, cheke also the horizontal section, especially the flyback transformer
Hi, IK circuit is engaging which basically means the picture tube is getting tired, the only "fix" is temporary (may get another year out of it). You have to increase the "screen control clockwise".
Remove back of set, follow large black or red wire attatched to picture tube down to the flyback transformer, mounted on flyback are two black controls, one is focus (leave it alone) the other is "screen", adjust it clockwise approx. 1/4 inch, remember that this is a high voltage circuit so use one hand in the set the other hand out of the set at all times,any questions ? e-mail me back, good luck, BMW Rider