Question about Philips 17PF8946A 17 in. EDTV-Ready LCD Television

5 Answers

No Picture When I turn my tv on there is no picture for a long time. Somethimes after 20mins or so I get a picture. But now there is no picture (there is sound), and the little light keeps flashing from red to green.

Posted by on

  • 3 more comments 
  • Anonymous Jan 23, 2008

    Has sound no picture


  • Anonymous Apr 09, 2008

    Have a Phillips 15PF5120/28 that has sound but the picture stays on only 20 - 30 seconds and then goes black.

  • littlebuddy May 05, 2008

    I have the same thing going on but i dont get the red and green light it just stays blue and will finally come on sometime. will try the fuse thing

  • Anonymous Jul 11, 2008

    I have experienced the same thing with my TV. I have tried to contact Bestbuy, with no luck. I have made numerous phone calls and all I want is what I paid for and thats service withthe service plan I purchased. I have no picture, the blue light comes on and I amd not mechanically inclined AT All, so when it comes to doing this fuse thing, I have a feeling that I'll make situations worse.

  • Anonymous Jul 11, 2008

    no picture on my tv

×

Ad

5 Answers

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

I replaced about 10 electrolytic capacitors and a PWM controller IC (MC34067P). Fortunately, i found an almost identical schematic diagram in the internet, so i started troubleshooting. To make it short, i replaced most of the electrolytic caps and mylar caps in the Preconditioner stage and VsVa Power supply stage. And finally the PWM Oscillator IC (MC34067P). You have to make sure that the Preconditioner stage is running ok, with an output of 380 to 395 volts DC. There are two fuses on the board (in my 32FD9954), one is for the mains AC located near the mains connector coming from RF filter (two wire connector- large wires), the other fuse is in the middle of the board. You measure the DC voltage on this fuse on the middle of the board and it should be about 380volts or above. The real culprit is the PWM IC. Initially i replaced the MOSFET (STY34NB50F) in the Preconditioner, then the caps, then finally the IC. Then it worked!!! I put back the old MOSFET, it's not damaged, so now i have a spare one. Just replace the electrolytics near the PWM IC (2.2u, 4.7u, 100u, 1000u) I think the design problem is that the IC is nearly located to the heatsink which generates lots of heat. The IC deteriorated in time and the electrolytes in the capacitor evaporated due to the excessive heat inside the case. I'm thinking of incorporating 120cm computer fans at the back to suck down the heat. Happy troubleshooting. I have the necessary diagrams if you need it. regards, Valerio

Posted on Dec 21, 2006

Ad
  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 11 Answers

I have 6 philips15pf5120 lcd tv's. all of them turn on but no pic. after many hours of research and tesing i found a fuse on the lcd back light power board that is open. i toke a risk and soldered a jumper across the fuse and to my surprize tv fixed. its been on for almost an hour now with no problems. the fuse is a board mount 2.5 amp right by the input connector. on a side not there are also two 150uf 25v caps that were buldged as well and replaced. hope this helps.

Posted on Aug 01, 2009

Ad
  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Actually, it doesn't really matter what Phillips TV you purchase the reality is that anything Phillips has produced in their TV line the last two years (if not longer) are ALL defective as is becoming more and more evident by the number of web sites croping up all over internet with complaints. The largest defect on their TVs is the on and off function that has become so endemic it would pay to check out here on internet at least one or two law firms already in the process of a class action suit against Phillips. Phillips, by now, needs to admit that they are very well aware of the problem yet continue to manufacture these lemons. Worse is the number of innocent consumers at the mercy of repair places that rather than take one possiblity at a time prefer to simply order a very expensive and seldom available computer board when, in fact, the problem can be solved by examining properly the "fixins" then going to Radio Shack and purchasing a fuse for less than $3.00 you can install yourself! In fact, you get four fuses in a box! The problem/solution: there is a small fuse that is accessible to the average person (though with utmost care) that blows out (no one has figured exactly how or why) that causes the off and on to continuously turn the screen black with triple blinks then two blinks then one, etc. At first the fuse does NOT appear to be blown so inspect closer. It's located right next to the "board" nearby as you open the back. In discussions about this there are now numerous people who have applied this with success. And as to the length of time "the solution" will last: Some have said "so far so good", others have said two years and most - with the advent of internet communication - seem to be the more recent affected that are thus far doing ok. I obviously know all the above because my own brand new 27PT5441/37 Phillips from Circuit City who muscled me out of buying a repair contract went "dark" right at the end of the usual 60 day warranty!! Now I know why it was sucha deal!! And why C.C. talked me out of buying the contract that I find despot on their part since denying me a contract gives away the fact that they've had complaints. Good luck and since at this moment I can't find the web site where I found "these angels" who tipped each other off I recommend you try to find it also using "phillips" as the key word.

Posted on Nov 02, 2006

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers

I also purchased my Phillips 42in. from Circuit City, but they suggested for me to purchase the extended warranty contract. My now second plasma is in the shop under the extended warranty. The TV wouldn't turn on, just flashed seven times, pauses, then repeats. I'll ask the repair shop what the resolution was and then post it here. Hopefully they can't fix it and I'll get a new TV.

Posted on Sep 08, 2007

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Would you like to sell this unit? If so for how much?

Posted on Nov 13, 2006

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.
Good luck!

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

When the tv stopped working, the colors just started getting really weird and broken up then the piture seemed to get much smaller and shift over slightly


Quick Fixes for TV Picture Problems - Cox Communications

www.cox.com/residential/.../tv/guidedhelp.cox?...

Cox CommunicationsLearn · Learn · Explore Homelife · All About Data Usage · Getting Started with your Cox Services ... Just sign-in, click the Reset button, and get back to watching the show. ...Select Your TV Picture Problem. Poor Color ... We're always working to make Cox.com Support better, and we rely on our customers to help us do it!

Fix for Samsung lcd TV colour display problem - YouTube

? 1:26
https://www.youtube.com/watch?v=Q1bg9qP_qic
May 3, 2013 - Uploaded by alwaysafix
Samsung lcd 40" tv with a serious colour issue. Checked ...+Troy Simpson Happy to hear everything is working now. Thanks for watching .... Weird thing is that it just happens somethimes and no one knows why. IMO it's some ...

Vizio VX37L Help fix "Reverse Colors" Problem - YouTube

? 1:29
https://www.youtube.com/watch?v=_BEEnOCVmn4
Jul 16, 2013 - Uploaded by Paul Reisinger

Feb 08, 2016 | Televison & Video

1 Answer

When tv is turned on get horizontal lines on screen sound ok picture comes on after about 20mins


the problem you may have is a dead driver or poor connection.check flexible plate connector at Y drive board, and then check the scan IC if burnt or shorted good luck and good day.

May 03, 2011 | Philips Televison & Video

1 Answer

Hi Recently i turned on my TV and the picture was crystal clear as always, but then i turned it off for 20mins turned it back on and now the whole screen is messed. it shows a double of everything and...


Tries tv unplug,replug it back like about an hour later.By letting the tv resetting itself back to the factory setting,see if this solved ur problems.Still have the same result.Tv have Tuner signal board have problems.The tv Tuner signal board is causes and the problems,it dead.That the board where the inconming broadcasting signal cable plug into.Tries webssites like Shopjimmy.com,Ebay.com to buy a refurbish tv Tuner signal board for the replacement.

Jan 14, 2011 | Televison & Video

1 Answer

High Pitch squeal everytime t.v. is turned on. 20min warm-up.


sounds like the switchmode power supply is varrying in frequency ..needs to be checked by qualified tech,,,

Apr 16, 2009 | SNK Magnavox 19MF338B/27 19 in. LCD TV

1 Answer

Monitor


Adjust the pixels. Right click on desktop, properties, appearences, advanced and there should be a slide bar to adjust your pixels. Make them larger, ex. 1440X900 instead of 680X400

Jul 15, 2008 | E-Machines eMachines Monitor E15T4

5 Answers

Polarid tv-dvd combo power trouble


TROUBLE WITH REMOT CONTROL. I CANNOT PROGRAM MY DIRECT DISH

Jan 02, 2008 | Polaroid FLM-3225 32 in. LCD Television

1 Answer

Help-Love my 40307


I hate to tell you but if parts are not available is not a good sign,consider buying a new TV and get it over with.

Sep 12, 2006 | Mitsubishi CS-40307 40" TV

Not finding what you are looking for?
Philips 17PF8946A 17 in. EDTV-Ready LCD Television Logo

1,382 people viewed this question

Ask a Question

Usually answered in minutes!

Top Philips Televison & Video Experts

The Knight
The Knight

Level 3 Expert

75178 Answers

matt martin
matt martin

Level 3 Expert

1213 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

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

Answer questions

Manuals & User Guides

Loading...