Question about Philips Televison & Video

13 Answers

Problem with philips 42 inch plasma tv

Red
light flashing and co
annot turn tv on

Posted by on

  • 7 more comments 
  • clodagh Jul 02, 2008

    still not working

  • clodagh Jul 02, 2008

    model number:42PF9966/10

  • clodagh Jul 02, 2008

    please help

  • clodagh Jul 02, 2008

    need more help

  • clodagh Jul 02, 2008

    need more help

  • clodagh Jul 02, 2008

    need more

  • clodagh Jul 02, 2008

    blinking is repeated and does not follow any pattern

  • clodagh Jul 02, 2008

    any other solution

  • clodagh Jul 03, 2008

    any solutions

×

13 Answers

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  • Master
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1. Try this - hold the menu button down for 10 seconds. TVshould power up; you will have to turn off front panel buttons on menu.

2. You can also try a hard reset: Unplug TV from AC mains and remove all cablesfrom TV. Wait about 30 minutes and replug to AC power and redo the cabling.Switch on the TV and see if it works..

3. Powering down the set or putting it in standby may haveallowed the power supply to cool. Weak capacitors often go out of spec whenthey cool, thus preventing a section of the power supply from firing upproperly again. There is a simple trick...just warm the back of the TV with ahair dryer for 5-7 mins after you have unplugged the TV. Look for the littleareas of holes in the back panel of TV. Use these as your guide at where to usethe hairdryer, but don't hold the dryer too close (say 5-6inches away). (Makesure the dryer is on High heat). If the TV doesn't turn on after you haveheated it up (like it tries to come on but then turns off) you need to unplugthe TV again, this resets it. And repeat those steps till it works. Resettingthe TV after it fails to turn on is the key. Also, just leave the TV on. Don'tturn in off. Since it is LCD, it doesn't take much power...only a few bucksextra a month for your utility bill.

4. A circuit board may crack about some of the largercomponents mounted on it. You can inspect the PCB's for fractures, and thenrepair them. It may also be poor soldering that has failed. I would be checkingfor these things first.

5. If you want to go in for a long term solution, you can easily replace thewhole power board or just change the faulty capacitors. You will have to openthe back panel and take a look. You can make out which are faulty, becausetheir caps will be swollen on top. Here's a sample pic of a bust capacitor (notsame model):
problem with philips 42 inch plasma tv - 13531a8.jpg
Check the specifications of the faulty capacitors, and get the replacementsfrom your local electronics shop. If you are comfortable with this, you can usea pair of needle nose pliers to G-E-N-T-L-Y pull out the defunct capacitors.Once that is done, solder in the new capacitors carefully. If are unsure how todo this, try to get a friend who knows how to do this kinda stuff do it foryou, or get a qualified technician. Warning: If you do nothave a background in electronics repair, or are inexperienced, get a qualifiedtechnician to do it for you.

REMEMBER there are very dangerous voltages inside a TVthat can KILL. Be sure to work SAFE when dealing with electricity. DISCONNECTTHE POWER BEFORE YOU DO ANYTHING.

Hope that helps!

Posted on Jul 08, 2008

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  • Philips Master
  • 19,396 Answers

Well, you have diagnostic led flashing and safety switch turning tv off. If you have electronic repair experience you should start testing the tv as suggested.
If you do not have any, as it looks like, it is mandatory to contact a repair service technician in your area.
To get a service contact follow instructions on last page of your owner manual, there you will find a customer service number.

PS: a plasma tv has very few parts inside, when it is Ysus or Zsus board the tv usually keep working with a distorted picture, when it stays off like that it is usually something burnt (IC, Capacitor etc) either on main pcb or on power board area.
If you think you can do it yourself without risking to cause any additional damage, start grabbing multimeter, solderer and screwdriver, once you find out what had blown we can find replacement parts for you.

Regards

Posted on Jul 08, 2008

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  • Master
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Certainly, I can help you. I would recommend going to the following link and getting the service manual so he can see first hand disassembly instructions and testing proceedures. Its only 10.99 and they email it to you shortly after purchase. The manual is a valuable resource as it will have part numbers in case you do need a new parts. heres the link.
http://servicemanuals.vstore.ca/


Good luck..........

Posted on Jul 08, 2008

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  • Master
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Hi,

If I may offer a possible source of solutions, two nearly similar concerns has been posted in this site (FixYa) before:
1. Philips 42PF9630A with a solution proposed by jdbouncer
and a succesful repair by
2. premtech of a Philips 50PF7220A

I know and understand that the model numbers are different, however, Philips as most other brands uses practically some variation of the same firmware, hence similar indicators for errors (or nearly enough). Additionally, the chassis designs may be similar with the exception of larger capacity components for bigger models.

Hope this be of additional help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Jul 03, 2008

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  • Master
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Have a look at troubleshooting tips of manual.
http://www.gebruikershandleiding.com/eng/handleiding-5-33337.html
It seems PSU problem and as much experience and special tools are necessary , it must be taken to a service station to estimate the damage.

Posted on Jul 02, 2008

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  • 298 Answers

This is already a problem with the software of the TV, you may need to have the firmware upgraded, it's still best to have it sent to your nearest service center to have it repaired.

Posted on Jul 02, 2008

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  • Master
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The blinking red light indicates that the set is in protect mode. A problem has been detected and the set is shutdown to prevent further damage. There are a number of causes for this. Does the blinking follow a pattern? Usually the light will blink a repeated count indicating the circuit in which the problem was detected. Please post that number. If it is just a repeated blinking, it makes remote diagnosis a bit more difficult.

There are some generic things that can be checked if you feel comfortable working inside the set. Please let me know if you'd like to try repairing it yourself.

Dan

Posted on Jul 02, 2008

  • ABRsvcs Jul 02, 2008

    Again,



    Do you wish to take the generic troubleshooting route? We can work through the repair if you are comfortable working inside the set.



    Please let me know.

    Thanks,

    Dan

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  • Master
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Hi there

Try replacing the electrolytic capacitors in the power supply section. I started with replacing (2) 860uf 180v caps just after the bridge rectifier and continued along the circuit. Some (15) or so capacitors later,it finally cleared the the horizontal bars and lines and the high pitched noise. It also fixed another intermediate problem of no video, when turning on the power.

Here is a picture of what they look like:
problem with philips 42 inch plasma tv - 0dac752.jpg
Thank you for using FixYa. Have a nice day and please remember to rate this solution as FixYa if it helps you.

Thanks
Dustin Ellse (BearWeb)

Posted on Jul 02, 2008

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  • Master
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A couple of possibilities for your problem is

  1. The main filter capacitor or other filter capacitors in the low voltage power supply is dried up and this can cause all kinds of regulation problems.
  2. The power supply regulator is defective (or marginal) allowing excessive voltage on its output and then the X-ray protection circuitry shuts you down.
so try to check this

Posted on Jul 02, 2008

  • gopinath pasupathy Jul 05, 2008

    there is problem with voltage regulation in your tv



    so try to check it

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  • 108 Answers

Please get it replaced as you might be under the warranty period

Posted on Jul 02, 2008

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I think some of the capacitor is burnt off inside or the transformer is getting over heated due to this you are facing the problem

Posted on Jul 02, 2008

  • Dileep Keshavanarayana
    Dileep Keshavanarayana Jul 02, 2008

    check the power supply cord once is it in the good condition or not ...
    & check the transformer is it working correctly or not ....


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Could you please provide model number of your TV?

Posted on Jul 02, 2008

  • Jaime Hernandez Jul 02, 2008

    If you know how to use a multimeter and know the danger of working around high voltage area, you can remove the back cover and measure the voltages from the power supply to the Y sustainer, Z sustainer assemblies and verified that they are getting the proper power.

    In most cases, if the Y sustainer assembly fails; the LCD will fail to powers up.

  • Jaime Hernandez Jul 02, 2008

    If you open the back cover, unplug the Y sustainer board and see if the plasma powers up.

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  • 310 Answers

Trun off the tv for half hour and then try it..............

Posted on Jul 02, 2008

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