PN50C450B1DXZA– Samsung Plasma display – Failure Symptoms
“Y” board failure symptoms
These examples show Y board errors, because the Y electrodes run horizontally, errors can often be seen across the screen. 2010 & 2011 y board errors will be detected by the logic board and often create a High Voltage Power down [Vs On to Off], condition.
When failure exists on either the Y board or the Y buffer boards, be sure to replace both assemblies. A failure on either board can create a failure on both the assemblies.
Y buffer board failure symptoms
X board failure examples
In the left screen, the sustain signal from the X board is low or missing. For 2009 models, and older; verify the operation of the X board by disconnecting the power supply cable to the X board. If the other boards are working the picture will be dark. If the X board power or the Y board power is removed, however, on 2010 or 2011 models, an error will be detected and the Vs supply from the SMPS will be turned Off by the logic board. A black screen as seen on the right here will be the result.
Logic board & logic buffer board failure examples
The panel illuminated, but displays with incorrect noisy video.
The panel illuminated, display is normal, except for area of Logic Buffer Board failure
X board & Main board failure symptoms
If the Ve initialize signal is low or missing creating image retention. No Erasing. Troubleshoot the X board by verifying that the Ve voltage is correct with the label on the panel.
The main board errors are similar to logic errors but the problem can be on a single source such as tuner. If the Menu also shows the defect the main board is suspected.
Boards_Location
