Re: Black Vertical Bars Through 1/2 of Screen



"Notice! Almost all plasma manufacturers highly recommend replacing the Y Main and Y buffer (or buffers) when replacing any one of the set. If a good Y-Main is connected to a faulty buffer, there is a high degree of likelihood that damage will occur to your new Y-Main, and the opposite often holds true if a bad main is connected to good buffers. Just a word of caution."

After reading this, is this true or a ploy to make you buy multiple items?
(They are out of stock on the XC_Top buffer...

Re: Black Vertical Bars Through 1/2 of Screen



You're Right Drpj, I was looking at diodes, good call. Below are the HD Pictures.

Diode 3 (D3) I think looks bad compared to the other:
(Again, It just happens to be one of the two right in front of one of the black vertical lines, and the other is in front of the other black line (coincidence?))


Diode 4 (D4) Looks like it is in good working condition to me:...

Re: Black Vertical Bars Through 1/2 of Screen



Okay, so I check all of the connecting ribbons and clean them with an alcohol swab, but to no avail. Would anyone happen to know the exact buffer board I should replace given the height and width of the problem in my original pictures post? I have three boards across the top consisting of XC_top, XL_Top and XR_top. Also, I have a resistor labeled D2 & D3 that look a little "cooked" compared to the D1, D4 & D5 resistors in the same corresponding parts. They also look almost as though they line up with...

Re: Black Vertical Bars Through 1/2 of Screen




Are there any specific connectors I should focus on on the X since they are in the mid-section of the screen? I usually repair laptops and PC's so I have some experiance with PCB's & connectors but nothing in the way of plasmas....

I have a LG Plasma 50" (50px4dr-UA) that started off with one solid intermittent black line through the screen that stops exactly half way down(Vertical). Eventually it stayed and became permanent. After about 3 months a 2nd one did the same thing and now a third one is starting to flicker one and off like the other 2 did almost a year to date that the first one started. It has served me well and has a brilliant & vibrant picture and cost me a pretty penny to buy new. Is there any information that I can give you to be able to fix this TV so i do not have to spend over $1200 on a new one...