Question about HP PL4260N 42 in. Plasma HDTV
My said the TV didn't have a picture...I came home and verified...it didn't have a picture dispite working fine the night before. The TV has very few "run" hours on it, but its about 2 years old. HP wants $629 to repair...I won't pay that for a TV that isn't going to be supported in the near future and they would only give me a 90 warranty on the parts.
First things first:this is a common and actually guaranteed problem in all 42'' TVs that use the same LG display technology.
I'd take it a step further and say it is a common problem of pretty much all plasma TVs made in 2004-2005.
And there's A LOT of them.
So while you can blame HP for failing to support a product released under their brand you also have to understand that the problem is deeper than that.
We have serviced easily hundreds of those boards and we have sold hundreds of DIY repair kits so I know what I am talking about.
Both the Y and the Z sustain boards (6871QYH053B and 6871QZH056B respectively, or some of their equivalents) use the same intelligent power module (IPM) IC and it is unfortunately designed to work on a very high temperature.
It works all right, but it also wears out.
If you have ever wondered how does a semi-conductor wear out just think of it this way: you know how steel is hardened, right? Hot - cool - hot - cool...the process changes its structure.
The very same things happens with semiconductors, except unlike steel rods you have a zone think in nanometers range that expands and shrinks thanks to temperature differences.
It can only take so much and it eventually changes properties enought so that one day there is no semiconductor anymore. It's a conductor.
It busts and you get the problem you describe.
One very simple and essential conclusion is that ALL plasma TVs that operate at high temperatures, in fact ALL appliances that operate at high temperatures, face this problem. Of course it depends on how thick the semiconductor junction is, how was it created, etc. etc. factors that determine how many times it can withstand expanding and shrinking before it loses its qualities.
A second and more practical conclusion is that since the same component is used on both sustain boards you are going to have the same problem on both!
And this is exactly the case!
Don't have enough space here, so if interested, read the rest at our site.
Hope this helps.
Posted on Jan 05, 2011
PTS worked for me. One last bit of advice: Don't ever buy HP again, and think about joining in the class action law suit.
Posted on Jan 14, 2010
The problem comes from excessive heat in the plasma. _Most of the TV makers avoid assembly Fans inside the tv to reduce price and noise. I repaired a PL4260N model by changing a IC which was short-circuited, located in the Y-Sus PWB. Its located below a Heat Sink. In the solder side of Y-Sus PWB, it have labels with Vs, Gnd, 15V, etc. If you have a Multimeter, make sure if there is a short-circuit between Vs-gnd. If its so, then you have to replace it (50 dlls). And the fuse also. Good luck!
Posted on Jan 12, 2010
The problem is with the YSUS board. Only 1 fuse (4A) was blown so you will need to replace that one along with the YPPD-J018C Hybrid IC module that is under the large heat-sink.. I'm an EE in my day job so I have done this sort of repair from time to time but it can be intimidating unless you have very good soldering skills and a good solder station such as a MetCal. You will need a lot of heat to free the pins before prying this IC up. Failure to do it correctly may lift some of the delicate traces and the new part will not work! When removing the IC I always add leaded solder on these lead-free boards because it flows better. Also adding extra flux and using a Soldapullit Solder ****** works well. You keep adding the solder and sucking it back up...until the pins are relatively clean. Removing the IC still took me about 1/2 hr. to get enough solder sucked up until I finally was able to stick a screwdriver under it and pry it up. Do this gently, on several places on the IC to break it loose. On my board Q1 was blown but since there 4 of these same little semi-conductors, your problem might be Q2, Q3, or Q4? They are easy to spot because they blow apart catastrophically, there was black soot around mine. Also, one of the main reason this part failed is because the white heat sink grease was dry. This means that the heat-sink was not able to adsorb the heat from the board as well anymore and then it just got too hot and failed. So use a good high end thermal grease when you put the new YPPD-J018C part back on the heatsink. Something with silver in it cost about $6.95 a tube. This will make the TV last much longer. The YPPD-J018C part should run you anywhere from $39.95-$49.95 plus shipping. Both Suburban Electronics in MD. and Rich-Tech have the part. Good luck!
Posted on Aug 18, 2010
I tried switching the fuses and that didn't work. I don't think I'm going to mess witht YSUS board, this has taken too much time as it is. Finally, its too bad that there are so many posts with the same problem for the same TV model, and that each post has potentially different solutions. When I came to the site two weeks ago, I only found the solution of switching the fuses. If I had known about the YSUS board, I would have tried to replace that as well.
Posted on Jan 23, 2010
I am having the same problem as we speak--one guy said to remove the back cover on the tv, then there is a video card on the left hand side that has fuses. Just replace those two fuses and we should have picture again. We are going to try this and see if it works!!
Posted on Dec 29, 2008
I have been lucky. I have the problem of sound but no picture. I have been able to unplug the tv and it initializes again and the picture comes back on. I hope this helps someone. I love this TV. Love the speakers on the side. Can't get them like this anymore. We have had ours for 4 years now. Hoping to have it for several more years. Now I have to go reset it!
Posted on Mar 12, 2010
I like solution 3 listed above, but if you're not that technical, here's something else to try.
As described above, this problem is caused by something called a YSUS board going out. You can buy the replacement parts for about $300 dollars or there is a company that will fix the YSUS board. I don't have instructions yet for removing the YSUS board, but if you've got the skills or know someone who's good with electronics, you can fix the board for about $120. I've got the same problem with my 42 inch plasma TV. I called PTS Electronics today at 812-824-9331 (their website suggests you call 800-844-7871). I spoke to Kelly. She was very helpful, but said anybody at their number can help.
Kelly said that you do not need to call first to get a return authorization. To get the YSUS Board fixed, you need to remove yours and send it to the following address:
2000 S. Liberty Dr
Bloomington, IN 47403
When you ship in, you should include a letter with the following information:
Your Mailing Address
Your Phone Number
Payment info for the $122.60 to repair the board. If you want to pay with a credit card, note that in your letter and that you want them to call you. They'll call you to get your credit card info when they receive your board.
She suggested shipping via UPS and insuring the part when you ship it.
I learned some new things when I spoke to her. If you'd prefer to replace the board in your printer, you can use one of the following alternate parts to replace the YSUS board:
Part made by LG - part #6871QYH053A
Part made by LG - part #6871QYH053B
Part made by Toshiba - part #75003031 http://www.moduslinkptstvboards.com/75003031-P6096.aspx
Out of the three alternate replacement parts, the only one they currently have available is the Toshiba part. They have it listed at $254 (I thought Kelly said $268 - maybe with shipping?) with a core value of $65 that you'll get back if you ship them your broken part. That leaves you paying roughly $200. Having them fix my part seems like a better option to me. Kelly also said that all these parts for the HP TV are refurbished parts - none of them are new - that's why they want you to send them your broken part.
Link to PTS website with information about ordering 1032298-HS (http://www.moduslinkptstvboards.com/1032298-HS-P1628C13.aspx). They currently have 0 available for sale. The message on this page tells you to contact them to arrange repair using the information provided above.
Posted on Jan 13, 2010
The problem is the "Y-SUS" board. It is inside the set on the left side with several aluminum heat sinks, under the left side brace bar. You can order this board from Union Electronics at www.ued.com .Search for part number: TNPA3243AB-PA
It lists for about 115$
Posted on Mar 20, 2009
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