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Out of focus tv picture

Picture is no longer sharp on 3 year old toshiba tv - type is out of focus. Have made all possible adjustments to no avail. When set comes on green cast appears when picture loads.

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If you have already adjusted the focus pot on the line o/p transformer (a small transformer with a lead that has a plastic cap attached , and is typically clamped onto the top of the crt/tube BE CAREFUL DONT TOUCH CAP WHEN TV ON VERY HIGH VOLTAGES)
also could be your crt/tube is bad if so then scrap/recycle
cheers

Posted on Jun 17, 2008

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I have a Mitusbishi CS-40503 tv that is approximately 17 years old. When I turn it on, the entire picture is blurry (like your glasses are off) and then after about 7 minutes, the picture is crisp and...


Hi sletwin,
This symptom indicated of faulty CRT socket (picture tube socket). A few days or weeks time the symptom will remain and will not back to clear picture. Below is the sample picture of the socket where is connected to the picture tube.


jdvillanueva_18.jpg
You may replace it yourself if you have a little knowledge in soldering and disoldering technique. There are two wire soldered in this socket from the flyback, one is the screen and the other is the focus.
Try to buy from your local electronics supply, bring the actual sample because many types are available at the market.
Let me know if you need further assistance.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

May 13, 2011 | Mitsubishi CS-40503 TV

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Dark picture


Hmm my dad's old t.v. just cut out on him it took awile to turn on this my be the end of ur tv so this might be a power problem but older t.v. loose there colour on the screen my uncle had a like 10-15 year old t.v the screen was like green when it was light but when u turned of the light or closed the blind's it's picture was ok so try that.

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AKAI PT5598HD - I HAVE REPLACED THE CONVERGENCE BOARD AND PICTURE AND SOUND ARE "ON" BUT "PERFECT FOCUS" WILL NOT BRING BLUE INTO FOCUS. "PF" STOPS AT 37% - RED AND GREEN PATTERS ARE SHARP BUT BLUE IS...


Most of these sets have a SCREEN/FOCUS block---usually all black with 6 controls----you need to look close at it as one row of 3 will be screen controls---don't touch those----the other 3 will be FOCUS- MARKED in little letters will be r,g,b(red,green blue). TWO ways to adjust the focus: 1. carefully locate the blue focus control and adjust to see if blue will improve in focus. 2. each of the 3 large lens where the picture comes out have a wing nut and a slot--you can loosen the nut and turn the lens---usually best focus that way is if the part that turns is in the middle of the available area to move it.

I should point out that all projection sets intentionally de focus the blue--the lines if blue should be clear but never as perfect as green or red--this is normal.

I do this here for free so if this has been helpful give me a vote here.

if you need direct help:
etower.766@netzero.net

Aug 20, 2009 | Akai PT5598HD 55" Rear Projection...

1 Answer

Toshiba 32'" tv wont give sharp picture


no rocket science here - my son fiddled with the cable cord attachment, until presto, the screen became sharp. Then we moved away as fast as possible, lest we shifted it and it put us back at square one.!!

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TV, RCA MOD # F19424, CTC 203U5, Picture blury


Focus and Screen. The focus control may help, just like focusing a set of binoculars or an old camera. Watch the picture on the TV, using a mirror can help and make an adjustment until the picture is as clear as you can get it. If it still is not clear it may mean that your picture tube is weak.
If you can avoid it, don't touch the Screen control. If you have, let me know and I can advise you on the proper way to adjust it.

Oct 09, 2008 | RCA Televison & Video

1 Answer

Poor picture, raster & sounds ok


If the picture is fuzzy (out of focus) it may have a focus adjustment on the flyback transformer. Possibly an adjustment available from the outside, through the back. Look for any markings on the plastic housing indicating Focus, Brightness etc.. You can use a small screwdriver through the labeled holes in the case to make adjustments.
If the picture is crisp, but faint or the colors seem washed out it may be the tube is at it's end of life or needs to be rejuvenated. TV shops can rejuvenate tubes but it's not cheap.

Mar 11, 2008 | Konka K2386U 23" TV

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At the rear of the tv there may be two controls on the right hand side marked "screen" and "focus".If the set is newer,you will have to remove the cover and look to your right.You will see a dark object with a black or red wire coming out of it's top.That is your flyback transformer.On this you will find these two controls.Adjust your focus with the one so marked.Be careful to only adjust this control while you watch your picture clear.PROMPLY put the cover back.

Feb 10, 2008 | Sharp 20F640 20" TV

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I have a Toshiba 50HP15 PLasma flat screen TV. Its been working tone for 2 years now. All of a sudden without warningm the right 1/3 of tghe picture is missing and is black, where as the other 2/3rd of the picture is great picture and in HD. When I press DISPLAY on the remote control is says FULL 720p. When I press the Picture Size button on the remote the message NOT AVAILABLE come on. Anyone with suggestions. Thanks

scotto

Dec 27, 2007 | Toshiba TheaterWide 50HP16 50 in. Plasma...

1 Answer

Traditional toshiba TV picture problems


it is due to poor focusing please check 1 set with focus control fitted on flyback transformer, 2 check focus control wire comes to crt base is loose or some foreign material deposited on it. 3 crt base loose contact. 4 if tv is old then there is a possibility of crt is getting weak. if you are not a technical person do not open set as tv has very high voltage inside. hope this will help.

Oct 01, 2007 | Televison & Video

1 Answer

Sony TV with blurry picture


blurry picture is mainly due to focusing voltage is not proper. solution 1 check & adjust focus control on flyback. 2 check crt base for loose. 3 wire going to focus control on crt base got disconnected due to foreign materials deposit on it. 4 if tv is old possibility of crt getting weak.

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