Question about HP PL4260N 42 in. Plasma HDTV

2 Answers

HP 42' Plasma Won't power on, does not power up..Won't turn on

My HP 42" Plasma had a new main board replaced under warranty due to imput issues. Now, 6 months out of warranty, it won't turn on. Specifically, when you push the power button, the TV sounds like it's powering up (you can hear the fan come on) but after few seconds, (warm up period) the power shuts off automatically. Sometimes the screen will actually light-up (but only for a mili-second) just before the power shuts off. I even tried shutting off the main power button behind the TV and it made no difference. I've read a few blogs suggesting that HP has a recall but I got nowhere with customer service today and the TV is not currently worth the $630 repair being offered by HP. Does anybody have a suggestion as to how I can get HP to fix for free? Or perhaps how to fix myself? Being that the main board was already replaced, maybe it's just an inline fuse of somthing cheap? Thanks!

Posted by on

  • sesheff Jan 12, 2009

    Dear Tech 1819,

    Thanks so much for the quick response.

    I am by no means an electronics wiz but I did take your advice and removed the rear cover of the TV to inspect the connections. All cable connectors, including the lvds to the main pcb “look” like they’re connected properly. I did not however run electrical current through them to confirm continuity. I don't know how.

    Prior to throwing the TV away, I decided to continue researching my problem and found another electronics forum (from 2007) where an owner of the same model TV had the same power problem. The owner asked: “I need a power supply for an HP PL4245N. There is a capacitor that continues to fail. It has been replaced three times. HP apparently won't sell the power supply. At this time the HP fails to come on. Please help.”

    The answer was, “Try a higher voltage capacitor but the same capacitance."

    Last week, he emailed me and said, “I have since discarded that TV and received $900 in compensation. The real problem I found after taking it apart is a capacitor. It is located in the power supply section. I replaced it after it was repaired the first time by another TV technician. The new capacitor lasted 6 months. What I think is the original repair shop failed to supply the correct part and this is why the device failed again. Because I replaced it with the same capacitance the last shop used it naturally failed again. I could not get HP to sell me the power supply section directly nor would they sell me a schematic."

    Does this information help? Or do you still think my issue is more a connection problem?



    Thank you,

    Steve

  • Chuck May 11, 2010

    check the lvds cable from the logic pcb to the main pcb and get back to me..

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 1 Answer

Hi i have a 42" sylvania plasma tv model 6842 pf m and have a blinking light on but it does not power on.Can you help me?

Posted on Mar 09, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 36 Answers

Here's the number to HP case management 877-917-4380 ext.79, try this number and be firm that they need to fix this, I just had an HP plasma that was 3 yrs old replaced for free, no charge. Good luck

Posted on Feb 04, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Samsung plasma hp-r4272c, i dont have VS volt output on main power supply board


Just replace the main power supply board if there is no vs voltage output.

Sep 21, 2015 | Samsung HP-R4272 42 in. Plasma HDTV

1 Answer

Hi I have a Samsung HP-R4252 42" Plasma HDTV. The


Try website like Ebay.com to buy a refurbish tv main Tuner signal board.The part number it is on a sticker on the board,must take the tv aparts to read it.The fan itself buy it on Ebay.com too,or try website like Partstore.com to buy a part fan.

Jun 09, 2011 | Samsung HP-R4252 42 in. Plasma HDTV

1 Answer

My Samsung plasma 42 "


I had a similar problem with my 42 in Philips LCD HDTV.


Here was the problem. My Power Supply Board had several bad capacitors. I opened my TV (warranty was expired of course) and found four bulged capacitors on the PSB. Many major electronics companies Philips/Magnavox, Sony, Panasonic, and others were sold capacitors that failed in 2-5 years instead of 10-20. The capacitors fail prematurely due to a lack of preservatives. Unfortunately, they were installed in all sorts of devices and cause a wide range of failure problems.


Here are some options for you.


1. Have it fixed by a professional $$$$$$$??????? (Is it under warranty?)

Remember, TVs CONTAIN HIGH VOLTAGE AND CAN KILL YOU! Do this at your own risk.

2. Open your TV and find PSB. (The board that the power cord plugs into) Check for faulty caps. If you find some (bulged or leaking) bad caps replace the entire board. The entire board costs around $250 right now because they are in high demand right now. They can be found online. I would definitely shop around though.


3. Remove and then replace individual faulty caps. This takes some soldering skill.

Caps are inexpensive and if you can take care of it yourself it will save you hundreds.


This may be your problem. If you determine that it might be.

I have a Tip/How TO tutorial on this site that may also help. It gives step by step instructions for replacing caps on PSB #715t2432-2. If this is your board you are in luck. Here is the Link: Fixing the Philips Turns/shuts off on its own problem. I'm working on uploading pictures to help guide people though the process as well. Let me know if I can do anything to help.


Hope this helps and if it does please rate it accordingly. Good luck.

Dec 19, 2010 | Samsung HP-R4272 42 in. Plasma HDTV

1 Answer

42PG20 42 in. HDTV Plasma TV: i have an lg plasma tv - 42pg20 when i turn o...


There are several known issues that can cause that.

The top candidate is the main board, the next is the Y-Main board.

Here's a link for repairing the power supply board of LG 42PG20, which also contains a link to how to test your own board to see if it is good or not:

http://www.coppelltvrepair.com/p/716/lg-42pg20-ua-power-supply-board-repair-service

Hope this helps!

May 17, 2010 | LG 42PG20 42 in. Plasma HDTV

1 Answer

42 in magnavox plasma tv has sound with no picture I unplugged tv and waited 10 minutes with no luck


Hi my name is Roety,
I can help you with your issue ,
If you have no TV menu either check for any swollen capacitors on the power supply.
If none are found measuring voltages will localize the defective board or boards the voltage test points are marked VA and VS on the panel and boards.
If disconnecting boards restores these voltages the suspected boards must be replaced .
Tech labor is about $250 plus parts.
Suspected boards
power supply
Y sus main & Y buffers  
Logic board
mainboard
panel
 
 
If I have helped you with your issue
If you have more questions you can still respond
I will reply asap
Thanks

Dec 30, 2009 | HP PL4245N 42 in. HD-Ready Plasma...

1 Answer

I have 42 in ilo plasma tv. I can turn tv on but


Most likely the TV has a Mother board related issue. Your TV is just like a computer. When it freezes up, nothing responds and you have to pull the plug to turn it off.
But, I can't say it's 100% the problem because I can't actually look at the tv over the internet.

If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, if you can find and purchase a Service Manual over the internet; It will help you diagnose the source of the problem and fix it by soldering in the new part or replace the whole circuit board. The Service Manual will give you circuit diagrams, test points, and part# lists.Service manual cost about under $20. Most cases the new part cost less than $15. New circiut board, depending on type, may cost about $125.

I hope I shed some light on the subject for you.

Jul 08, 2009 | iLO 3200 32 in. LCD Television

1 Answer

I have a 42 inch vizio plasma t.v. and I have power but no sound or picture, I've unplugged it all night and still doesn't work! It's


For the 42" plasma, you need to change your sustainer boards or your main board to fix the problem. If your TV is still under warranty, call 877-MY-VIZIO and they will have a technician go to your home and fix the problem for free.

For the L42 HDTV, you need to change the inverter boards or the main board. If your TV is still under warranty, call 877-MY-VIZIO and they will have a technician go to your home and fix the problem for free.

Jan 26, 2009 | Vizio P2 42 in. HD-Ready Plasma Television

1 Answer

Samsung, 50" new 2008, 1080i


It was power board related problem.
But, sometimes need to replace the Y-main or X-main as well.
better to contact samsung call center again, ask to replace both of them.

Jan 16, 2009 | Samsung PS42P2S 42 in. Plasma Television

2 Answers

Vizio VW42LFHDTV10A


I give you a site for do it your self repair..

http://www.lcd-television-repair.com/

Jul 07, 2008 | Vizio P2 42 in. HD-Ready Plasma Television

Not finding what you are looking for?
HP PL4260N 42 in. Plasma HDTV Logo

1,053 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP Flat Panel Televisions Experts

Tony

Level 3 Expert

2598 Answers

gbob59

Level 3 Expert

2963 Answers

Lawrence Oravetz

Level 3 Expert

7565 Answers

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

Answer questions

Manuals & User Guides

Loading...