Question about Sony KP-48V90 TV

1 Answer

No picture and tv automatically turns off

When you turn the tv on you get a dark screen with lines running through it and after a few seconds the tv just turns off. You can't adjust anything or see a picture at all. The standby light blinks the entire time but it isn't just one number. Sometimes it blinks 4 times sometimes 6. When the TV comes on, the picture is fine ... all colors are normal. Then, after about 15 to 20 seconds, it turns off ... yet the audio remains. The screen does not go completely black but one can see a faint diagonal "signal" on screen. I'm going to unplug the TV for about a day and see what happens. I don't know if it's a thermal problem of a component or if the system needs a re-initialization.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 129 Answers

Good day.

You are getting an intermittent performance for your unit. One reason for this might be with the loose contacts on the high voltage section of your unit. Have it resoldered.


Regards,


chris

Posted on Aug 19, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Vertical Bars Horizontal Lines on LED TV


Check the input connections. If Ariel connection, or other video input connection from any external source have loose contact, or wire broken, this type of interference can occur to picture.
Gopakumar Gopalan Google

Apr 23, 2014 | Televison & Video

1 Answer

TV turns on then off no picture


this is very common. it is the power supply going bad. it should run at 130 volts dc. but it is now running much lower that this. just enought for the tv to come on. but not enough to power all the circuits right.

Nov 20, 2007 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Picture went out and red light on the front by power button is blinking. When I turn TV on I can hear sound but no picture,, then TV turns off automatically after a few seconds.


Hi,
It seems problem with low screen voltage to three picture tubes in this rear projection tv.
If standby light blinks 5 times after three seconds long pause then adjust screen volts of each picture tube to solve this issue.
Screen volt adjustment requires expertise and job of professional so please call local tv repairman to help you.
Thanks.

Feb 27, 2011 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Picture suddenly turned dark


hi the picture tube of ur tv has got damaged and it badly needs a replacement.. so its better to replace ur picture tube..

thank u rate me!!

Feb 08, 2009 | Sony FD Trinitron WEGA KV-24FS120 24" TV

1 Answer

Sansui Projection TV - RCA D52W23 52 in., Problem is tv gets turn off automatically after few minutes. It doesnot off but a blue screen with lines appears immd.., it takes long time get the picture on...


CK for Bad capacitors cp114,120,150 if any of them is puffed up on top it is bad so replace all 3 cp150 is 2200uf 16v other two are 220uf 35v also resolder all pinns on FBT flyback transfomer.

Jan 23, 2009 | RCA D52W23 52" HDTV CRT TV

1 Answer

LG DU-42PX12X Plasma, picture startes flashing then goes black after a few minutes


You need to get this tv service asap.i beleive that the problem is in the inverter board or yb board.


good luck

caypianan@yahoo.com

Oct 25, 2008 | LG 42PX5D 42 in. Plasma HDTV

1 Answer

Dark screen/picture.


This 30" flat screen TV set may have a problem in the high voltage circuit of the TV set. You may be able to adjust this by taking off the back of the TV set. Look for the block where the large red wire runs up to the top of the picture tube. On this block will be two controls. one will say screen and one will say focus. Try and slowly turn the control that says screen or S on it clockwise and see if you can make the picture brighter. Turn up the control till you just start to see faint lines in the picture, then back the control down till the lines go away. If the picture does not come up when you turn this up, and all you get is a blank screen, you will need to have this set repaired by a qualified repair person. Good Luck

Jul 14, 2007 | Sanyo HT30744 TV

1 Answer

Picture problem


Usually that symptom is caused by cracked solder joints on the vertical output IC. As the IC starts heating up, the picture starts breaking up at the top with several "dancing" dark lines appearing, the top scrunches down and then when the vertical quits altogether, the screen goes completely black. A good slap on the side of the TV might make it happen faster or clear it up temporarily. If you have experience working on PC boards then you can resolder the pins of the vertical output IC but if you have never soldered parts on PC boards then allow a qualified tech to handle it for you.

Nov 20, 2006 | Sony KV-35S42 35" TV

3 Answers

TV turns on then off no picture


I was watching my tv and it just automatically turn off, everytime since then i turn it on it goes off in seconds without picture or sound comes.

Mar 20, 2006 | RCA D52W19 52" Rear Projection Television

Not finding what you are looking for?
Sony KP-48V90 TV Logo

Related Topics:

112 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Televison & Video Experts

kakima

Level 3 Expert

102366 Answers

The Knight
The Knight

Level 3 Expert

72196 Answers

Jerry Greenberg
Jerry Greenberg

Level 3 Expert

1667 Answers

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

Answer questions

Manuals & User Guides

Loading...