Question about Hitachi 50VF820 Projection TV

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Discolered screen my tv has a discolerd screen like if there was a magnet to close

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Just turn it off for 5min but if it persist leave it a night, that should do the trick. 

Posted on Nov 16, 2009


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1 Answer

3" shadow on left side of screen

watch for speakers being to close to the tv. if a speaker has a big magnet on the back of it, it will cause it to have the shadow and then it will turn green. so make sure there is nothing with a magnet close to the tv because it will ruin the tube on the tv.

Apr 10, 2012 | Panasonic TCP50S2 50 in. TV

2 Answers

The corners of the picture on my Sansui screen have turned pink

That called ghosting or magnetic interference on CRT .
To eliminate ghosting, the easiest step is to keep the TV from equipment that has a large magnet. For example: speakers, electric motors and all that is magnetized.
Or you can also turn off the TV for 10-20 minutes to cool the PTC on the TV.
If it remains, try to move the location of the TV to other place.

i hope it will help you.

Mar 14, 2011 | Televison & Video

1 Answer

Want to buy a magnet that will put the color back in my tv please tell me the name of it and where to find it

hello janiemclauri!
guess you have a picture tube tv, right? this magnet called degaussing magnet, has to be connected on mains and then put close to screen and move away with cyclic moves... try to look at ebay.

Feb 20, 2011 | Televison & Video

2 Answers

Rainbow screen aiwa tv,, screen shows different colors like rainbow// brushing a magnet infront of the screen fixes the issue temporary

Picture tube is magnetized. Manual degausing is required. already you have done this.

Since you say it is reappearing, you have to check the following.

1. Relocate the TV or relocate if you have placed any tower speakers
or home theater speakers close-by.

2. Check whether auto degauss functioning OK. In the MENU
check whether you switched off auto degauss option. If it is OFF
enable it to ON.

3. Finally re orient the direction of your TV and watch the rainbow
effect. Switch OFF TV, wait for 20 mts, and again switch ON.
Repeat the process. It should disappear.

Magnetic toys or any other devises using magnet will cause this problem.

Aug 11, 2010 | Aiwa TV-S2011 20"

1 Answer

Green or pink colour invading the screen from the sides of tube

I believe that your problem may be caused by a magnet, yes although harmless at most times it will mess up the image on your screen. Their may be something emitting magnetic waves to close to your tv.

Feb 25, 2010 | Sony FD Trinitron WEGA KV-29LS35 29" TV

3 Answers

I have samsung 21 green screen

Either something wrong with the picture tube or something with scart input if you use one. / / David

Jul 29, 2009 | Samsung TXN3271HF 32" TV

1 Answer

The picture is blurry and there is also a pinkish spot in the middle oif the screen

usually this kind of issues happens when you have a magnet close by.
magnets like the one in speakers. Also, an electric induction of a sort can cause it as well.

try the follow:
disconnect the TV from the wall electricity
make sure there are no magnets in its close area
let it rest for a day with no electricity - you need to give it some time to release the electric induction out.

if it doest work- a TV repairman will be able to remove it manually by using a strong magnet, but you should not try it yourself,

Jul 26, 2009 | Philips Magnavox 9P6034C 60" Rear...

2 Answers

Tv rainbow in screen

The picture tube has become magnetized, possibly by someone getting a magnet to close to it. You can de-magnetize it using a strong magnet (cow magnet or similar). Place the magnet as close the the screen as possible without touching it to the screen. Starting at the middle of the screen and slowly (not too slow, about one full circle per second should do) move the magnet in a circular motion. With each full circle move the magent twards the outside (making a larger circle) as well as moving it farther away from the screen. Using a magnet will not harm the screen, so play with it and you'll soon get the feel and will see what you need to do.
Tv's have a circuit built in to 'Degauss' (demagnetize) the screen each time you turn it on, but this will only work if the set is 'Cold'. If the set is left off for 2 hours (to cool doen) and does not demagnetize when you turn it on the circuit is faulty.

Jul 21, 2008 | RCA TruFlat 27F520T 27" TV

2 Answers

Sony Tv

you should take it to a TV repair place, they charge $50 to look it over.

Dec 17, 2007 | Sony KV-35S40 TV

2 Answers

Bad picuter/color quality

Your problem sounds like it has to do with beam landing, or purity.
In a CRT type tv such as yours this can have many causes, some of which I'll describe.
- The CRT (picture tube) is magnetized, possibly by speakers being placed too close to the tv. Turning off an item such as a vacuum cleaner in close proximity to the tv can also cause the crt to become magnetized.
- The auto demagnetizing circuit has malfunctioned and requires a tech to repair
- The CRT has developed an internal fault and would need to be diagnosed/replaced. This is not worth the cost of repair.
- The yoke and/or beam landing magnets have become loose or faulty. This is internal and would require a tech to confirm or repair.

The only fault which you may be able to fix is if the crt has become magnetized. Check for sources of magnetism close to the tv. That would be such things as speakers or anything with a permanent unshielded magnet. TV's with CRTs have a circuit which demagnetizes the crt at each cold start. Turn the tv off and leave it off for 3 hours and then start it. If the crt is too magnetized or there is a problem with that circuit this may not work. You can also try a different placement, the ideal being the front of the screen pointing either directly north or south.

Nov 16, 2007 | Zenith C32C86R 32" TV

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