Question about Sony KP-48S75 48" Rear Projection Television

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Kp-48s75 sony rear projection

My tv will turn on then after 25 seconds or so it turns off and will not turn back on until you unplug it and plug it back in

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  • williammoore Feb 20, 2008

    what would be the best way to figure out if that is what is wrong and then what would be the best way to repair it or would it even be worth it made in 2000

  • Anonymous May 26, 2008

    turned tv on went black, red standby/timer light stayed on, unplugged tv, standby/timer light blinked 4 times, tv shut its self off.



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Does a red LED ever blink on the front panel. if you ever get 5 blinks than you are most likely haveing CRT failure the IK lines arent right and it is blanking the video.

Posted on Feb 20, 2008

  • MATT BECKER Feb 21, 2008

    if the tv fails and goes into protect it will blink an error code on the front panel. if you count the blinks it will give you a direction to start looking at the correct circuit

  • Donald Marling Jul 10, 2013

    my sony kp48s75 is stuck and wont respond to remote



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1 Answer

My sony tv model kp48s75 i dont want to do away with it ,but it has a blur and green out line

Have you Cleaned mirror and top of all 3 tube lenses, then adjust the screen and focus to each Tube R/G/B After cleaning go to menu then turn color OFF then adjust all 3 tubes as close as you can to a Black and white picture then turn color back on.

Feb 10, 2010 | Sony KP-48S75 48" Rear Projection...

2 Answers

Tv wont come on and a red light is blinking. I have a Sony Wide screen projection TV model kp-46wt520

Can you unplug the TV for about 15 seconds, and then plug back in and watch the stand-by light. Tell me how many time the stand-by light blinks in regular intervals. If it doesn't blink at all, you need to change a fuse on the g-board. Once this is done run back through the stand-by blink light process, and more troubleshooting can be done if problem isn't already solved. If the stand-by light just keeps blinking with a count over ten just tell me, and I'll look for other possibilities.

Oct 25, 2009 | Sony KP-46WT520 46" Rear Projection...

1 Answer

Why wont my tv turn on ?

Need a powerboard replaced/repaired. If you are in waranty go through your manufacturer and work on a replacement.

Aug 04, 2009 | Sony KP-48S75 48" Rear Projection...

2 Answers

I turned my tv on then it just went off and havnt been able to turn it back on since. The standby light comes on but then goes off

It can be many things.
Start with the basics.
Unplug the TV for 20 minutes. Unplug it while on!
If that does not reset the controls when you plug it back in, it may be the circuit board.
Have you had severe lightning?
Also try resetting you BIG Circuit breaker but I doubt that will do much.
If that outlet has gone bad, a reset will fix it.
A dimming indicates a fried circuit board or one with allot of dust and a short is forming.
Dust can cause this too.

Feb 18, 2009 | Sony KP-48S75 48" Rear Projection...

1 Answer

Standby/timer light stays on red. no picture or sound on tv.

my sony red light flash.but it will not turn on just clicks

Nov 26, 2008 | Sony KP-48S75 48" Rear Projection...

1 Answer

Broken the plate( F and L )difussion

Here are part numbers of plate diffusion of Sony KP-48S75 TV

4-070-280-11 PLATE (L), DIFFUSION

4-058-455-11 PLATE (F), DIFFUSION

Oct 24, 2008 | Sony KP-48S75 48" Rear Projection...

1 Answer

G-board fir KP-48S75

I been replied you in your post, check it out..

Oct 11, 2008 | Sony KP-48S75 48" Rear Projection...

2 Answers

No Power, standby light blinking, power cord in/out two quick clicks

sounds to me to be a shorted HOT transistor or short somewhere. the click sound is the switch mode power suppy powering up sensing a short and quickly shuts down. the hot transitor is mounted to a heatsink near your flyback. check for emitter to collector short. you can try replacing it if shorted and if lucky that all that was ..but if shorts again you looking at probably a bad flyback. good luck

Aug 17, 2007 | Sony KP-48S75 48" Rear Projection...

1 Answer

My tv is broken

If still under warranty or if you have no electronic repair experience you should take the set back to the shop or to a repair person. Some of the solutions described below can be dangerous, TV's are very hazardous to service. Even when plugged out, TV's can store very high voltages. Try the suggestions on this post from the Troubleshooting page:,p228476/Sony-KP-48S75-48-in-Rear-Projection-Television.aspx

Jun 18, 2006 | Sony KP-48S75 48" Rear Projection...

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