Question about Sony KP-43HT20 43" Rear Projection HDTV-Ready Television

1 Answer

Sony Projection TV KP-43HT20

Our TV has started going out and shows a "No Signal" message. We have noticed that it goes out most once it's first been turned on in the morning or in the evening (after being off for a long period of times). It stays out for a couple of seconds to 20 minutes. A lot of times, we can turn it off and then on again and it will work. Once the TV is "warmed up", it seems to be fine. The picture is always fine when it's on. It will play DVD's with no problems at all.

Posted by on

  • 1 more comment 
  • Blanks Nov 29, 2007

    We called a tech - they suggested a problem with our cable input box in the TV??? I guess I would have liked a few more details to this solution, but really appreciate your willingness to respond and help!

  • Anonymous Jun 14, 2008

    Bought it from a reliable friend and she said it never gave her any trouble. Worked great for a few days, then cut to the No Signal. Nothing wrong with the cable box. Tried every connection sequence in the manuel. No cable box. Cable box only. Box and dvd. Same results. Leave tv off for a bit, cable works for a few minutes, then No Signal. I want to throw this thing off the roof, but it's too heavy, so please help me get it working again.

  • Anonymous May 15, 2009

    I have recently experienced a similar problem. For the last week, after my tv warms up, lines appear on the screen with a crackling popping sound and you are unable to really see what is going on. After a few mintues, it will be fine. It will do this on and off the whole time the tv is on. Sometimes if you turn the tv off and turn it back on it helps for a bit. Last night it did go to NO SIGNAL. I checked all my cables, taking them out and retightening them with no luck. Still this morning NO SIGNAL. I did watch a dvd two days ago, but did not try that this morning.

    Please help, the kids are losing it without the tb....



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.

    Vice President:

    An expert whose answer gotĀ voted for 100 times.


    An expert who has answered 200 questions.

  • Expert
  • 317 Answers

Call tech ..suggest solder conn in or around tuner..

Posted on Nov 26, 2007


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

A have a KP-43HT20 43 in. rear porjection tv, and everything works on it but i cant get a cable connection on it now!! it keeps saying no signal!!! its not my cable provider, its the tv!!! please help!!...

hello, how have you got it setup, the aerial should go straight in to you cable box RF1 then a second lead from RF2 in to the tv, then reconnect your scart leads,try retuning your tv.fingers crossed.


Dec 04, 2010 | Sony KP-43HT20 43" Rear Projection...

2 Answers

Sony model # KP-43HT20. power light flashes 6 times.

hello o Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206.


Nov 08, 2009 | Sony KP-43HT20 43" Rear Projection...

1 Answer

Is a sony big screen tv model number kp43ht20 a hd

Yes.The best way to hook up this set is using the Component input (R,G and B inputs) with red white for audio
see link to specs

Oct 30, 2009 | Sony KP-43HT20 43" Rear Projection...

1 Answer

Main screen showing "no signal"

KP-43HT20 has 2 tuners, one is main (TU2) and 2nd is called sub tuner (TU1). Both tuners are mounted on A board located on right side of TV.
In my opinion, main tuner (TU2) is not working and causing No Signal message.
Let me know if you want to repair tv by provide you more technical info.

Feb 21, 2009 | Sony KP-57HW40 57" Rear Projection...

1 Answer

Sony KP-43HT20 Projection TV

5 times blinks is error code for No Good White Balance and you said that picture is very green.
As you know TV is approx 7 years old so it needs RGB gain adjustments.
If you are TV tech person or know about TV repair, let me know to guide you further. Or contact local TV repair shop to fix it.

Oct 26, 2008 | Sony KP-43HT20 43" Rear Projection...

1 Answer

Blue and red color are off, picture is not clear

convergence amp ic bad
Sony Convergence

Jan 29, 2008 | Sony KP-43HT20 43" Rear Projection...

1 Answer

Sony KP-43HT20 convergence problem

Replace STK-392-110s or 150s upgrade with 180s replace both ics.

Jan 04, 2008 | Sony KP-43HT20 43" Rear Projection...

Not finding what you are looking for?
Sony KP-43HT20 43" Rear Projection HDTV-Ready Television Logo

Related Topics:

116 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Televison & Video Experts


Level 3 Expert

102366 Answers

The Knight
The Knight

Level 3 Expert

74999 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Are you a Sony Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides