Question about Sony FD Trinitron WEGA KV-27HS420 27" TV

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Images are blurred on screen.

Picture has blurred. White lettering or images have shadows to right of screen. I have attempted to correct by adjusting colr, hue, sharpness and picture. No improvement.

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Re: Images are blurred on screen.

You may have a defective dynamic focus circuit or or the Hi Voltage transformer. if your not a tech it is advised that you call in a trained tech as this is not a place for an experimenter to be. TO MUCH HI VOLTAGE and will make you cry if you live!!!!Good Luck

Posted on Aug 03, 2006

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White lines across the screen, enlarged blurred images, Comcast Sports Channel occurring in upper left hand corner.

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
Line, faults & possible causes to CRT screen are given with illustrations. You can get an idea about the fault to an extent.

Nov 28, 2014 | Standard (CRT) Televisions

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I have owned an emerson tv for two years now. All of a sudden the picture has become very blurry and white. It is not the cable connection and a DVD is also white and blurry. Even the input channels are...

you must open the back cover of tv, and then things you should do is set "SCREEN" adjustment on the flyback transformer. you must turn it counterclockwise to reduce and decrease the level of screen brightness. turn screen adjustment gradually until the horizontal blanking lines disappear from the screen. and blurred images will be sharp again

Aug 11, 2010 | Emerson EWF2004 20" TV

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Tv out of foucs

These procedures are from the owners manual, go into menu and then picture quality and then: Convergence The Convergence feature lets you adjust the TV’s three tubes. When the TV tubes’ images are precisely aligned, they create the color images you see on the screen. Over time, the picture can drift out of alignment (this is normal). If your picture seems fuzzy or has a yellow tint, using Convergence could correct this misalignment. Only one convergence is needed for all inputs, regardless of the signal format. Note: Make sure the TV has been on for at least 30 minutes (TV needs to warm up for best results) before starting Auto Converge or Red/Blue Centering. When you select the Convergence feature, a submenu appears with three options: Auto Converge Automatically aligns the projection lenses to self-correct color images. You’ll see flashing squares of color dance across the screen (this is normal). Note: After performing auto convergence, use the Blue Centering and Red Centering menus to fine tune convergence in the center of the screen, if necessary. Blue Centering Aligns the blue and green images to fine-tune the picture. Red Centering Aligns the red and green images to fine-tune the picture. Note: The ability to change channels is disabled when adjusting the convergence options. The TV must be tuned to a usable signal to converge the picture.

Apr 23, 2010 | RCA HD52W58 52" TV

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Multi-color double images or shadows and curved screen

Alrighty, very common problem on this set. Here's a rundown of the repair if you're a DYI:

With the back cover off you'll notice a set of boards on the bottom of the TV and a pair of boards sitting up over the two bottom boards. The problem lies in the upper-right hand board which is the color convergence power supply. Either replace or repair this board. The repair involves the main power mosfet (a three legged regulator on a heat sink) and two diodes next to it.

Next, the bottom right hand board needs to be removed and a fuse replaced next to the flyback. If you are versed in electronics I can detail the repair further otherwise you're going to have to have a shop do the repair.

May 18, 2009 | RCA HD52W58 52" TV

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Color Alignment

the most common problem when the tv felt is the shadows all over the screen (maybe the tv didnt show it imm but looks like now is there the problem)
second:there is a circuit in the tv that works when the tv turns on every day. prevents the tv showing shadows on the screen.
the answer is this: if that system that prevents shadowing is working then the CRT is broken and say bye to the TV. But if the expert tech can make sure the D' gauss system is not working and can repair it then you get tv back.

Apr 08, 2009 | Philips Magnavox TP3285C 32" TV

1 Answer


You need service. Sounds like the convergence is out of adjustment. As the picture is formed by a tri- gun arrangement (one for each colour), if any of them is not correctly aligned, you will see shadows on any sharp line like text, or blurring on a picture. The shadow or blurring will often be one colour i e. red, blue or green.

Mar 27, 2008 | Mitsubishi VS-45609 TV

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WS-55807: Images are dark on right side of display, but will go away after 3-4 hours.

you could be on the right track get some freeze spray and go around all the parts to see if you can make it act up, same with heatgun or hair dryer when first turned on heat one area at a time to narrow your problem down

Oct 21, 2007 | Mitsubishi WS-55807 TV

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