Question about Philips 42FD9954 42 in. Plasma HDTV

1 Answer

Power issue I have the 42pf9956/37. Same thing. Hit the power and it just clicks. I took off the back cover and tried the power and found the relay that was clicking. I have two blue relays in the middle of the board. I took a hair dryer and placed it over the relays. After a minute I tried the power and after 4 times it stayed on. Not sure why, but it is free. I won't turn it back off soon though. Why does this work??? Kevin

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 1 Answer

The Philips Plasma TV have a problem with electrolytic capacitors going bad. I believe you heated some capacitors and your problem may return. If so, try replacing 2540 (100ufd@25v)
and 2508 (4.7ufd@50V).

Posted on May 06, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My Hisense TV 46k316dw is not powering on. It sits in standby (red light on) but doesn't respond to remote or button presses. I replaced the power supply and it came on for a few hours then same issue


i ormally find the relays or capacitors are the issue with NO POWER on issues. just remove back cover of tv find the blown components ( easily found by burnt look or bubble on top of caps ) find the size on EBAY and shouldnt cost you more than 10$ to repair

Sep 17, 2016 | Hisense Flat Panel Televisions

1 Answer

Ln52a550p3fxza wont start cycles on and off


The problem could be temperature related. I replaced both my processor board as well as the power supply board and the problem is still there BUT I found a VERY simple solution that just requires me to keep the TV on all the time. When the TV is at room temperature, it literally takes 10-15 minutes for the system to stabilize and provide a good picture and audio. When my basement was at 55° for a few days, it took over 1 hr for the TV to stabilize. I now switch the input to my Roku player input and leave the TV on all the time. The Roku screensaver kicks in and all is fine with the world. No more issues with the TV not working. It adds to my electric bill but it is cheaper than replacing another board. When the TV dies, I'll get a replacement TV.

Dec 08, 2015 | Samsung LN52A550 LCD TV

1 Answer

Magnavox 37MF331D 37 inch won't power on with no led light


check the power supply board for swollen filter capacitors

Oct 15, 2012 | Flat Panel Televisions

1 Answer

I have a 46in. Samsung LCD TV. It worked lastnight now I tryed to turn it back on and all it does is the power light flashes and it make's a clicking sound can you help thank's very much.


The clicking noise indicates that its a power supply related issue. When the relay switches turn themselves off you will hear that sound. The first thing you should try is to unplug the set and hold for 5 minutes before plugging it back in and turning it on? Why? Because a power surge may have triggered these relays and unplugging them will reset them so that you can see if the set turns on. Otherwise we will proceed accordingly and troubleshoot the components provided you can follow a schematic.

Sai.

Mar 23, 2010 | Samsung 46IN LCD 1200:1 460DX BLACK 8MS...

2 Answers

My samsung plasma tv went out and it just makes a clicking noise and wont turn on i replaced the power board but it still does the same thing help anyone!


It was not your power board, Thought the same on several repairs.Found out it was the main board. The clicking was the tuner relay. I bet you own a SP-R4232. If so,The part you need is BN41-00574A. Also might be under BN94-00669A. Hard to find. Try Shop Jimmy/Or Encompass Parts. Not cheep tho. Hope this info helps.
Have a happy new year. Todd

Jan 01, 2010 | Samsung SP-R4232 42 in. Plasma HDTV

2 Answers

I replaced main power unit and and formatter PWB but I cannot keep tv on. It turns on, I hear some buzzing then a faint click followed by an immediate louder cllick and powers off alltogether? Need help...


If power supply is good and voltage measures out ok. Also check any relays or capacitors.If LCD, check caps, if projection, check bulb and high-voltage transformer and flyback with a voltmeter.
Capacitors are the most common reason for failure in today's electronics.

Nov 15, 2009 | Hitachi 42EDT41 42 in. HD-Ready Plasma...

1 Answer

Samsung le32r74bdx 32


i have a $1256 samsung 40'' lcd i have had it for about 1.5 years..just long enough for the warranty to expire..i went to turn the tv on like nomal but all i got was a ed blinking light..and than it would go out after the relay inside clicked a few times.tryed all the to fix it my self..new power cord,diffrent outlet,letting it sit unpluged for 24hrs.ect..finally i took it off the wall took the back off to see if any fusses were blown out. nothing it all looked good to me.so i took my air commpeser to it and blew the whole thing out..put it all back together..and it turned on red light was off and just a hint of light at the edge of the screen...so i was like ok and began to play my ps3 and after about 45 min i just shut off ..nothin would work back to the blinking ed light.i have not messed with it for 3 weeks and yesterday tryed it again.nothin but relay click and red light...so i hit my tv at the bottom by the switch and i came on...i couldnt believe my eyes..it was short lived after watching it for 5 hrs tuned it off and went to bed...in the morning i ran down stairs to turn on my tv..but yet again black..i was not going to spend $300 to $700 to get it fixed..so to day i got my air commpeser and blew it out again..this time i was messing with the power cord right where is hooks to the tv and the red light stayed on solid like it was in stand-by so i pressed the power button and it turned on..so long story..check the power cord and blow out you tv.."but be carful"

Aug 09, 2008 | Samsung LE32R74BDX 32 in. HD-Ready LCD...

2 Answers

42PF9956/37 SHUTSDOWN...


Ok. I got my tv back on.
I pulled off the back cover and found the relay that was clicking.
I have two blue relays next to each other that click when the power is pushed.
I placed a hair dryer over the relays for about a minute.
Once heated up, it only took 4 tries to get the TV to stay on.

Jan 03, 2008 | Philips 42PF9956 42 in. HD-Ready Plasma...

1 Answer

42pf9956/37 philps plasma


I don't know why but this got my TV on.
I took off the back cover and found the source of the clicking.
Two blue plastic rectangular relays in the exact middle.
When I pushed the power button, I felt the top relay click, and I saw a flash from the bottom one. (they are right next to each other)
I took a hair dryer and placed it over the two relays for about 1 minute and tried the power.
It clicked only 4 times and then came on!!!!!!!!!
For some reason heat helps the relay.
If anyone is a tech and can explain this, please do.
Good luck!!!!
My tv is on and it didn't cost me anything.
I just can't turn it off now!!!

Sep 25, 2007 | Philips Magnavox 42MF521D/37 Television

Not finding what you are looking for?
Philips 42FD9954 42 in. Plasma HDTV Logo

Related Topics:

495 people viewed this question

Ask a Question

Usually answered in minutes!

Top Philips Flat Panel Televisions Experts

The Knight
The Knight

Level 3 Expert

68352 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

 Grubhead
Grubhead

Level 3 Expert

4590 Answers

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

Answer questions

Manuals & User Guides

Loading...