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

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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.

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Re: Sony Projection TV KP-43HT20

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

Posted on Nov 26, 2007

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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...

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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...

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