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Top Half of my Philips Plasma tv is out Just the lower half works

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It sound like the upper y drive board off the y sustain pcb. This board is located on the upper left side of the tv viewing from the back. Need to get part number off the board to get correct one. Philips uses differant boards for same models

Posted on Jun 26, 2009

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Electronic tech needs help this tv only half of picture is showing what could be the problem i wants to fix it myself


Hello Danyell,
According to the model number you provided you have a 42" Insignia plasma TV. The problem you reported with having just a blank black screen on the lower half is due to a bad lower buffer board or also called a lower scan board. The part number is LJ92-01739C and if you Google this part number you can find these online and also find some sites that may show a short video on how to replace it. Price of this board looks to be about $35. Also of note is you will find that this part number is a Samsung part number which means your Insignia TV has a Samsung plasma panel in it so the associated circuit boards will also be Samsung parts.

May 02, 2014 | Insignia 42" Flat-Panel Plasma HDTV

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42 PHILIPS PLASMA HDTV 42PF7220A37 Hello, The top half and sometimes the bottom half of the screen would go black now and then, now the bottom half is distorted and theres some issues in the upper half...


Download philips latest firmware here: Click sometimes glitches can be cleared with their firmware. Also this could be a sign that your vertical buffer drivers are over-heating due to a faulty Y-sustain problem. The best way to check is to remove the back cover turn the TV on and see which buffer IC is getting red hot by touching it. Be careful as the voltage levels are dangerous, get someone who's technically proficient to do that little test for you....
http://tvtechwork.webs.com/

Oct 18, 2010 | Televison & Video

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Bottom half of screen black-out


I would replace the lower Y buffer. Part number 996500032640. Goodluck.

Jul 05, 2010 | Philips 42PF7220A 42 in. Plasma Television

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My 5 years old Plasma TV found half of the screen picture view not very clear.. The half colour seen blur..


Your Buffer boards or the YSUS main are bad. THe YBU-Y Buffer upper controls the top half of display, the YBL-Y Buffer lower controls the bottom half and the YSUS Main controls both those boards. They are located to the Far Left on and opened Set.

Jun 21, 2010 | Philips 42PF9966 42 in. HD-Ready Plasma...

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Magnevox 42" plasma screen problem


It is your lower y main buffer # 996500032640 or use the Samsung one "same but costs less" BN96-02216A" Realy the same. Samsung makes it for Phillips/Magnavox. Samsung $80 Phil/Mag $185
Even JVC $91 All the same part. The Samsung https://www.encompassparts.com/webwiz/wwiz.asp?wwizmstr=WEB.SEE&partnumber=6462145 is your best bet. Todd

Oct 31, 2009 | SNK Magnavox 42MF231D 42 in. Plasma TV

1 Answer

Screen lower half goes black/blank


The lower "Y Buffer" board is defective. Best repaired by a technician, or contact Phillips support for the part if you think you are able to replace a small circuit board on your own.

May 19, 2009 | Philips 42FD9954 42 in. Plasma HDTV

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Half of the screen is distorted


You have a bad lower Y-buffer board. On these sets it is not uncommon for them to fail. At the same time of replacing the lower Y buffer board you should replace the upper Y buffer board since they work together. This is not a repair for the novice so seeking a TV technician to do the repair is recommended.

Feb 01, 2009 | Philips 42PF9630A 42 in. Plasma Television

1 Answer

Phillips 42 inch Plasma -Screen Issues!!!


intermittent loss of picture on either bottom or top half of screen is specific to y buffer boards located on left side of screen going from top to bottom when looking at back of tv. the y lower buffer would be the board to replace to resolve the loss of bottom half of picture. if the top half also is going out intermittently could tied to upper buffer as well but just a note the y main board to right of these buffers drives those two boards so in some cases could also be part of the problem. if only bottom half is affected i would recommend replacing lower buffer only

Aug 07, 2008 | Philips 42PF7320A 42 in. Plasma HDTV

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Model 42mf231d/17 42" plasma


If the loss of picture is either on top half or bottom half of screen. there are y buffer boards that go from top to bottom on left side of screen when looking at back that control those sections. when there is loss of half of picture then buffer associated with that area would be at fault and would need to be replaced. when i see a degrading symptom such as loss of picture on top half or bottom half leading to no picture issue normally you would check heat syncs on y sustain board and if not heating up after a few minutes of being turned on would recommend replacing y main and both y upper and lower y buffer boards as they complete a circuit

Jun 04, 2008 | Philips Magnavox 27MS343S 27" TV

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