20 Most Recent Sony KP-43T70 43" Rear Projection Television Questions & Answers

KP-43T70 is a CRT based rear projector and does not use a Lamp like newer LCD/DLP projectors. It uses 3 (Red, Green, Blue) glycol liquid cooled CRT's (like the picture tubes of yesteryear) to produce the image/light as opposed to a Lamp.

You are most likely going to need a special antenna. Like a DTV converter. To just hook up a antenna and pick up local channels you will need a newer LCD or LED flat-screen.

It has been quite sometime, that I have repaired this TV. In one case the audio IC with standby is bad. The symptom you describe, is my first area of trouble shooting. You may resist the temptation to replace this TV. I understand. It would be better to replace this TV. Sony is a unique TV, and parts for this may be substituted with non originals. Even if this set is repaired, it will be a matter of short time that it will go down. I would certainly shop for a new Sony flat screen TV. Your chances of having a long running TV is in your best interest. Thanks for asking and show all hands of support!

hello yes there is there should be a glass fuse in the power supply if black is blown but beware if you put another 1 in and blows again then there's a dead short in the tv somewhare , ps make sure you put the same rated fuse back in, the value will be on the end of the fuse or next to the fuse holder.

shaun

Projection sets have two very common problems listed below. You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

The first common problem is convergence

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.
• TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.

Here are some pics of convergence problems.






Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.


TV set after fluid change



SOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

call sears they only charge $99 to come out and free estimate. mine cost $300 to fix better than buying a new one.

Oi? You mean thermal grease? No thats not the source of the problem in fact I think your problem is not related to the ICs itself. I suspect that you have bad capacitors in the convergence or deflection circuits that have to be replaced? If you are handy at working on electronics I suggest you take a look near the heatsinks(where the ICs are) for capacitors that are bulged or cracked at the tops. If you find any then they will have be replaced with those of exactly the same specs. That should do the trick.

this is a indiciation of loss of vertical deflection. is the a thin horizontal line? I have found feferences that capacitor c517 in the horizontal cuircit was shorted cause this .. cant be sure... also other components that might be at fault is the vertical ic 1509 transitor q1505 vertical buffer.

Projection TV sets are known to have two common problems. The first problem that is common to these sets is convergence failure. When this happens the TV will usually look 3D, Wavy/Distorted, etc. It may also shutdown and blink an error code.

The second common problem with Projection TV sets is dull video, halos around objects, white looking video, or red overpowers the screen. This is commonly caused by the fluid in the lens being clouded overs.

You can find more details and solutions here on Fixya at the following link below. Or click HERE


http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

8-598-414-20 , antenna switch ***'y.

Press the menu button, if the menu has green missing as well it's the tv. If you can't tell with the menu, use a second source, being a dvd or a gaming system. If the green is still missing make sure you use different cables, it will be the tv. if only one source is the issue it will be the source that is missing the green color.

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

Convergence problems are very common on all Projection TV sets including Sony,Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit wiith instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms

• Screen Looks 3-D
• Colors wont align
• Screen may look distorted or warped
• No Audio/Video - makes a chirping sound.

Problem #2

Another common problem is dull or washed out video.
Your TV may have one or more of the following symptoms....

• Dull looking picture
• White looking picture
• Halos around objects
• Red/Orange looking picture

You can see some more examples and find a fix here
http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

You have problem with convergence. Have you tried adjusting in the users menu. This is a common problem in this type of TV, usually two convergence amp need to be replaced and sometimes sets of resistors are also to be changed.

What your is your TV?

hello if i was repairing it i use a good strong light and magnifying glass to see if is and burn't parts or any bulging caps any blown chips if these are ok then start to check parts. first i always check diodes then transistor then resistor then capacitors it can take a lot of time it. would be easyier if you know some 1 who is good with electronics it is worth fixing but it will cost you . hope you can get sorted shaun

CONVERGENCE PROBLEMS. COMPONENT FAILURE

If you are sure the tuner--which is what this part number is bad, there are several places where you can get it rebuilt cheap--First is Pts Electronics, If you Google sony and the part number you will also find.

http://www.tiptoptuner.com/#SONY

This is just an example that I found...Most of these tuners when available were expensive---best bet is to get it repaired/rebuilt

Let me know if you have questions--I am here to help.

If this information helps rate this solution as I do this here for free.

Thanks for using Fixya!

SD TECH