Question about JVC AV-32F475 32" TV

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Looking for replacement picture tube, dropped set, now left, from front view, 22% of screen has green tent, along with several spots that a simple degause will fix--suggestions please!!!

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The replacement picture tube new "if available" would cost more than a new set, unless you are lucky enough to find a good used one. but it sounds like the shadow mask inside the original tube has shifted, not sure how effective degaussing will be.

Posted on Jan 02, 2011

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What would cause my picture fade red and then go back 2 clear picture,i have i have a 51 projection tv model#51f59,bought it in 2007.


Howdy...Your set is not completely familiar to me but the technology is . It is very odd for both Blue and Green guns to drop out momentarily . You would need more observation of tubes . I would get the front screen off and see if I can spot the tubes going dark or dim . It may not happen often . I would also get the back off and scope out all surfaces for evidence of leaking coolant . The expansion bellows may not be easy to look at behind shielding etc. but they will show cracks better . I have seen this occur in sets that were left on a music channel from satellite receiver blue screen for instance . These sets were not designed to have one solid color for long periods . this coolant can corrode all kinds of circuits . The refill can be got at a lot of electronic wholesalers , the rubber can be repaired but probably best with manufactured part .
There could be an issue with aging capacitors , these can be visually spotted sometimes with swollen tops/leaking . Best with an ESR meter though .
Good luck
Hugh

Aug 09, 2016 | Hitachi Televison & Video

1 Answer

Toshiba tv has dark picture cant hardly see want get bright


If it's a old style projection screen pry off front grid, you,ll see a trapezoidal mirror this often becomes hazed smoke, dirt, ect. Make sure set is unplugged DO NOT ASSUME THEIR IS NO SHOCK HAZZARD BECAUSE SET IS UNPLUGGED(see capacitors) be careful and clean mirror with damp cloth and glass cleaner try not to spray as safety percotion, their are 3 tubes red , green, blue, green is th dominaent color if you know how turn blue HVU UP 1st( CLEAN picture tube lens 1st) These type of picture tube have clear poly glycol ( anti freeze) in lens unit to cool and is part of the optical system. I this fluid becomes contaminated then cost of repair may exceed value of unit, then increase red value I just thought you may bee able to do the color via menu not sure, if picture has a green tent at start this should help good luck , lot me know what you see.

Aug 18, 2014 | Televison & Video

1 Answer

Yellow to green tent screen to hitachi tv 42v715


You have some reason to believe it will not?

Some history for you---several years ago Hitachi began along with others to have issues with the optical light engines.

With a mix of high heat from a lamp into the engine (it has a blue,green and red section inside---guess what? BLUE is the first place that gets the heat and is damaged----minus blue and you have red and green which equals YELLOW.

Several of their sets made about 6 years ago (research 50v500) had exact same issues and were settled in a class action lawsuit.

The issue can but does not always affect the entire screen.

The question really is: This set really worth the part and labor cost for the repair?

On that earlier model I replaced under warranty over 40 of the engines. Also Sony and others have had similar issues some of which were settled in court.

HOPE IT WORKS OUT FOR YOU.

Jun 11, 2012 | Hitachi 42V715 42" HDTV

1 Answer

Flashes green yhen shuts off


Many of these sets had bad picture tubes--they use a red, green and blue crt. Most commonly the blue gives troubles--The tubes are now only available on a rebuild basis--usually not worth doing as the cost is very high.

You may have a bad blue picture tube but there is a way to deal with this first----the set has a black plastic block with six controls---three are Focus(red,green,blue) the other 3 controls are Screen controls(red, green, blue)

Someone has to remove the entire piece on the front of the set below the screen(usually a plastic part) most of the time it is secured with 3 screws on either side of the set in the back; once you remove the screws the entire piece should pull out(pull from right to left(it will not fall off or come out easy--it is held in with several large plastic pegs) With it removed there is an inspection plate with 4 screws-----the screen/focus block is behind it.

You need to look very closely at the block to identify the focus versus screen controls----one row left to right will be marked Focus and the other row leftto right will be marked screen------YOU need to locate the Green Screen control (they are black like the block) With the set on(be careful) go to a video input clip_image001.gif with nothing connected---if you see a green screen as well as the input number turn the Green SCREEN CONTROL SLOWLY TO THE LEFT UNTIL THE green is gone.

If this cures the problem you may only be buying yourself some time----if the picture tube is bad sooner or later this trouble may return----I have seen sets where this was adjusted and the set worked for a year or more with no repeat of the trouble----replacing thetube would likely cost you 400 -500 parts and labor.

I do this here for free so if this has helped you rate this solution.


SD TECH

Dec 14, 2009 | Sony KP-65WS500 65" Rear Projection...

1 Answer

After the tv is turned on it turns off 3 or 4 times after turning it back on and the screen turns blue for a few minutes before becoming clear. It lasts longer each day.


Many of these sets had problems with bad picture Tubes--they use a red, green and blue crt. Most commonly the blue gives troubles--The tubes are now only available on a rebuild basis--usually not worth doing as the cost is very high.

You may have a bad blue picture tube but there is a way to deal with this first----the set has a black plastic block with six controls---three are Focus(red,green,blue) the other 3 controls are Screen controls(red, green, blue)

Someone has to remove the entire piece on the front of the set below the screen(usually a plastic part) most of the time it is secured with 3 screws on either side of the set in the back; once you remove the screws the entire piece should pull out(pull from right to left(it will not fall off or come out easy--it is held in with several large plastic pegs) With it removed there is an inspection plate with 4 screws-----the screen/focus block is behind it.

You need to look very closely at the block to identify the focus versus screen controls----one row left to right will be marked Focus and the other row left to right will be marked screen------YOU need to locate the Blue Screen control (they are black like the block) With the set on(be careful) go to a video input clip_image001.gif with nothing connected---if you see a blue screen as well as the input number turn the BLUE SCREEN CONTROL SLOWLY TO THE LEFT UNTIL THE BLUE is gone.

If this cures the problem you may only be buying yourself some time----if the blue picture tube is bad sooner or later this trouble may return----I have seen sets where this was adjusted and the set worked for a year or more with no repeat of the trouble----replacing the blue tube would likely cost you 400 -500 parts and labor.

I do this here for free so if this has helped you rate this solution.


SD TECH

Dec 11, 2009 | Sony KP-65WV600 65" Rear Projection...

2 Answers

Screen fades from normal at start-up to blue in about 10 seconds, TV stays on, display goes black, sound still on, and red light on front blinks 5 times


These sets kp51ws500 had issues with bad picture tubes----this set uses a Red,Green and blue picture tube.

The tubes are only available on a rebuild basis and very expensive. There is one thing that requires no parts replaced you can try: here are the instructions:

v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} SONY WITH BLUE SCREEN PROBLEM:

You may have a bad blue picture tube but there is a way to deal with this first----the set has a black plastic block with six controls---three are Focus(red,green,blue) the other 3 controls are Screen controls(red, green, blue) Someone has to remove the entire piece on the front of the set below the screen(usually a plastic part) most of the time it is secured with 3 screws on either side of the set in the back; once you remove the screws the entire piece should pull out(pull from right to left(it will not fall off or come out easy--it is held in with several large plastic pegs) With it removed there is an inspection plate with 4 screws-----the screen/focus block is behind it.

You need to look very closely at the block to identify the focus versus screen controls----one row left to right will be marked Focus and the other row left to right will be marked screen------YOU need to locate the Blue Screen control(they are black like the block) With the set on(be careful) go to a video input clip_image001.gif with nothing connected---if you see a blue screen as well as the input number turn the BLUE SCREEN CONTROL SLOWLY TO THE LEFT UNTIL THE BLUE is gone.

If this cures the problem you may only be buying yourself some time----if the blue picture tube is bad sooner or later this trouble may return----I have seen sets where this was adjusted and the set worked for a year or more with no repeat of the trouble----replacing the blue tube would likely cost you 400 - 500 parts and labor.

I do this here for free so if this has helped you take a moment and give me a vote here.

SD TECH

Dec 05, 2009 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Sony KP 51 HW 40 Blue Lines


Some of these sets had problems with bad picture tubes; there is something you can do to try to correct this without replacing any parts.

v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} You may have a bad blue picture tube but there is a way to deal with this first----the set has a black plastic block with six controls---three are Focus(red,green,blue) the other 3 controls are Screen controls(red, green, blue) Someone has to remove the entire piece on the front of the set below the screen(usually a plastic part) most of the time it is secured with 3 screws on either side of the set in the back; once you remove the screws the entire piece should pull out(pull from right to left(it will not fall off or come out easy--it is held in with several large plastic pegs) With it removed there is an inspection plate with 4 screws-----the screen/focus block is behind it.

You need to look very closely at the block to identify the focus versus screen controls----one row left to right will be marked Focus and the other row left to right will be marked screen------YOU need to locate the Blue Screen control(they are black like the block) With the set on(be careful) go to a video input clip_image001.gif with nothing connected---if you see a blue screen as well as the input number turn the BLUE SCREEN CONTROL SLOWLY TO THE LEFT UNTIL THE BLUE is gone.

If this cures the problem you may only be buying yourself some time----if the blue picture tube is bad sooner or later this trouble may return----I have seen sets where this was adjusted and the set worked for a year or more with no repeat of the trouble----replacing the blue tube would likely cost you 400 - 500 parts and labor.

I do this here for free so if this has helped you rate this solution as I do this here for free.


SD TECH

Dec 01, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

RU -44, small "pink" spot on screen.


Green is missing from the area where you see the pink (actually magenta) spot. This might be due to a large amount of dirt on the green lens. It may be due to damage to the face of the green picture tube. You need to remove the front screen so you can look into the lens and determine that.

Depending on the make and model of TV, the screen may be held on by snap fasteners and come loose when you pull on the plastic bezel surrounding it. Or the bezel may pull off to reveal brackets screwed into the cabinet that secure the screen. Or there may be a trim strip under the screen that pulls off to reveal screws. Remove those and the screen will swing up and off.

Once you can see the lenses, clean them with a soft rag and glass cleaner. With the set on, look down into the lens and you can see the face of the picture tube. If you see a dark spot on the face, the tube is damaged and would need to be replaced

Apr 22, 2009 | LG RU-44SZ61 44" Rear Projection...

1 Answer

Green spots


Good Day;

It sounds like the TV has foreign objects on the tubes, lenses or inner-screen, such as dust or bugs.l Remove screen from the front and observe.

If it were a TV problem the spots would be near the center of the picture.

Good Luck.

Jun 07, 2008 | Mitsubishi WD-62725 62" Rear Projection...

1 Answer

Red spot in the middle of the screen


You most likely have a burn in on the surface of one of the picture tubes. What you need to do to confirm this, would be to take off the front screen, and with the set turned on, look directly into each one of the lenses, and see if you see a mark on the green or the blue tube. if this is the case, and I am pretty sure it is, the picture tube will need to be replaced, but this set is not a young thing, as the green faint lines is most likely a bad capacitor in the screen drive circuit. If the picture tube is indeed burned on the surface, most likely be better off buying a new TV set. Good Luck

Jun 25, 2007 | Toshiba 42H83 42" Rear Projection...

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