Question about Philips 30PF9975 30 in. LCD HDTV

2 Answers

15PF9936/12 Flat TV

I get a picture for a few minutes then the picture disappears and I am left with only the sound. Then after another few minutes the sound goes also and all I am left with is a blank screen.

AB

blank black screen after fewe minutes or sometimes seconds. Sound ok
is there anyone with a solution. modelnr is 30pf9946

Posted by on

  • 1 more comment 
  • Marnix Feb 20, 2008

    Is known problem at servicepoint if there is no white/yellow light present/visible at the (lower) backside of the flattv. This is indicatorlight of a certain condensator. If ther is no light than servicepoint needs to instal new condensator.


  • Anonymous Mar 14, 2014

    Screen goes black after a few seconds but still had sound

  • Anonymous Mar 29, 2014

    tv turns on hdmi pops up and turns on then picture goes away and humming
    starts

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that got 5 achievements.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Contributor
  • 21 Answers

I had this problem on my 42" Philips. Just got it yesterday and worked fine on the tv stand. As soon as I mounted the TV to the wall via wall mount system, I had the exact same issue you did. Figured it out today.

The wall mount was putting pressure against the center of the back of the tv (tv set had a slightly rounded back plate, and the mount was a flat plate). As soon as I put spacers (part of the wall mount hardware set) between the wall mount braket and the tv so there was no contact except at the mounting holes, the tv worked fine.

My theory is the pressure pushed the tv back plate against some board components which caused them to overheat (no air flow); or put pressure on internal connectors. I dont know.

Hope this helps, may not apply to your situation.

Posted on Sep 18, 2009

Need new tv

Posted on Feb 20, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Turn on TV and picture and sound are great for about 60 seconds. Then the picture disappears but sound remains.


I would start with checking the power supply 12vdc output, make sure it is stable with no ripple. If the power supply checks out fine, I would then suspect the main board.

Sep 20, 2012 | Vizio VT470M 47-inch 1080p 120Hz 5ms LCD...

1 Answer

I have a Sharp Aquos tv which repeatedly turns itself off. Can anyone help?


Try going into the menu on the control and change the power saver off, or the sleep programe turn them all off.

Mar 23, 2012 | Sharp Flat Panel Televisions

1 Answer

LG 32LC3R LCD TV picture disappears after few minutes


0ne of 3 has failed:
(in order of probability):

1. Backlight inverter
2. Power Supply
3. Backlight

Please seek the expertise of an experienced TV repair technician - as they contain potentially lethal voltages that must be properly discharged before work can begin.

Thanks!!!

May 14, 2011 | LG 32LC3R 32 in. HD-Ready LCD TV

1 Answer

Turn on picture and sound are great. for about 60 seconds. then the picture disappear but sound is great. turn power off wait a little bit ( try differ times. from 15 seconds to 10 minutes) Turn back...


The tv have a long board call a LCD inverter board.This long LCD inverter board is dead.That why,the tv have picture only flashes like a min. than,died and have sound left only.The LCD long inverter board help the LCD screen panel to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish long LCD inverter board for the replacement.

Oct 16, 2010 | RCA L32HD32D 32 in. LCD HDTV

2 Answers

Tv turns on, picture disappears after a few seconds, turn off tv, and then on, same problem picture is fine, the disappears after a few seconds


You may have either failing 24vdc power supply or the backlight inverter board.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx

Aug 07, 2010 | Flat Panel Televisions

1 Answer

Picture goes black but hear the sound


this is the problem related to display of ur TV screen...please contact the service centre...plz dont try to repair it urself..

Apr 30, 2009 | Sharp Aquos LC-C3234U 32 in. LCD TV

1 Answer

Very faint picture but sound is fine on my 50" Zenith plasma


Sounds like the Z-sustain board went bad. You will need the board replaced so make sure you find an LG authorized servicer.

Dec 02, 2007 | LG 50PX4DR 50 in. Plasma TV

Not finding what you are looking for?
Philips 30PF9975 30 in. LCD HDTV Logo

Related Topics:

427 people viewed this question

Ask a Question

Usually answered in minutes!

Top Philips Flat Panel Televisions Experts

The Knight
The Knight

Level 3 Expert

68250 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

 Grubhead
Grubhead

Level 3 Expert

4585 Answers

Are you a Philips Flat Panel Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...