Question about HP PL4260N 42 in. Plasma HDTV
Yes you have to replace the Y scan board... the bad part is that this is a common problem with the HPL4260 model TVs and HP knows it. However they will refuse to fix this issue if your TV does not fall with in their serial range of those they claim have faulty parts. I called HP, and the hardware Tech admitted that HP used some cheap sub standard parts in ALL of the models shipped HPL4260... not just the ones in the serial range they (HP) claim... this was yesterday (03 December 2008). However since HP no longer even carries the parts you have to buy them yourself... you can find the parts here: http://www.ued.net/website/index.html
you will need to buy: TNPA3243AB-PA and TNPA3242-PA the Upper and Lower data output scan boards.... aka Y scan... that is according the the HP Tech I spoke to...
Posted on Dec 04, 2008
I got mine for free from my neighbor and he was so disgusted with HP that he gave it to me. Since I'm an EE in my day job this was wasn't that hard to repair. The most difficult part is removing the YPPD-J018C Hybrid Module that is under the heat-sink on the YSUS Board. If you are good with a soldering iron, then you might give it a try?
1 or 2 fuses (4A) will be blown so you will need to replace those along with the YPPD-J018C Hybrid IC Module that is under the large heat-sink. Removing the IC 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 Tool 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 YPPD-J018C IC Module 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. Anyway, you have to repalce the whole IC anyway but you could actually replace these little transistors if you could find out what value they were. 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 heat-sink. Arctic Silver costs about $10.00 a tube from Radio Shack. 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. The whole fix should be under $70.00 when your done and your Plasma TV will be revived!
Posted on Sep 06, 2010
Having same problem,hp knows about problem and even knows about parts not being avail. wants $629 for repair but dont have any parts and no longer make any tv's DONT BUY HP - BUY SONY OR ANYTHING ELSE
Posted on Apr 22, 2010
Hp offers a by-back option call 1-877-563-6319 ext 79 you can get up 200-300 $ depending on purchase date have your receipt ready
Posted on Dec 06, 2010
Hi there, i have the same tv, same problem. I noticed the Y sus board is on the left and has 2 extra, or one long extr aboard. are these to which your are referring to? i took some photosi can post em...
Possible problem: Those large, orange caps (the 5 group and 2 group) are probably bad and buldgeing.. I might pull off some of the orange to verify, if so replkacing these are a good first styart, after fuses....
i see fuse 2 and 3 on the right side, but where is fuse 1? is there another fuse location?
any schematics or help, would be appreciated.
(using a voltmeter, one can see if current is running though since they have that cloth on the outside..)
but that's the extent of using it.
im workign my way though the issue today.
Posted on Dec 18, 2008
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