PS42D5SX - SAMSUNG PLASMA TV - FAULTS - WIRING DIAGRAM - CONNECTOR VOLTAGES

Samsung PS42D5SX/XEC - PS42D5SX/XSG - PS42D5SX/XTL Plasma Display TV - Common Faults - Wiring Diagram _ Connector pin Voltages.

THE TV IS HOT

Since a PDP TV displays a picture on the screen by discharging plasma, operating for a long time may introduce heat onto the panel. The internal heat of the panel is sent to the vent on the upper part of the product, and users must take care not to touch the hot air from the vent.  The heat from the PDP TV does not indicate a defect or problem.

NOISE FROM THE TV

A PDP TV may produce sound at a certain level when operating the fan to cool its internal temperature. In addition, since the high-speed switching circuit and the high current may produce noise depending on the screen brightness change, a PDP TV produces more noise than a conventional CRT TV.

AFTER IMAGE REMAINS ON SCREEN

Due to the nature of PDP TVs, partial after-images may appear if a still picture is displayed for a certain period of time after connecting a video game console or a computer.  This is caused by brightness deterioration due to the storage effect of the panel, and to prevent this from happening, we recommend you reduce 'brightness' and 'contrast'.

RED OR BLACK SPOTS APPEARS ON THE SCREEN

A PDP TV uses a PDP panel consisting of 123million (SD Grade) ~ 315million (HD Grade) pixels. Although a PDP panel is a product that requires high technologies to integrate a few million pixels, a bright or dark pixel may exist on the panel, this does not affect the performance of the product.

BOUNDARY APPEARS ON THE SCREEN

Displaying a still picture on the screen may permanently damage the PDP panel.
A boundary may appear due to the difference in the transparency of the panel when watching the picture in the 4:3 aspect ratios for a long time and the picture in the left, right and center screens is a still image.
A boundary may appear when watching a still picture from a DVD player or a video game console on the screen for a long time.

UNUSUAL LINES APPEARS

Keep the antenna away from the power cord or connectors if possible.

The SMPS relay repeatedly turns on and off by the protection function due to a defect on a board connected to the SMPS.

> Disconnect all cables from the SMPS, operate the SMPS alone and check if the SMPS works properly and if each voltage output is correct.
> If the symptom continues even when SMPS is operated alone, replace the SMPS.
> If the symptom is not observed when operating the SMPS alone, find any defective ASSYs by connecting the cables one by one.

[When separating and connecting the cables such as CN809 of the Main SMPS, CN1, CN2, CN3, CN4 and CN5 of DC-DC SMPS, CN of the X Drive Board, and CN of the Y Drive Board, a spark may be generated by the electric charge of the high capacity capacitor. Therefore, wait some time after separating the power cord from the unit.]

The SMPS relay or the LEDs on the front panel do not work when connecting the power cord if the cables are improperly connected or the Video Board or SMPS is out of order. In this case, check the following

* Check the internal cable connection status inside the unit.
* Check the fuses of each part.
* Check the output voltage of SMPS.
* Replace the Video Board

TROUBLESHOOTING PROCEDURES BY ASSEMBLY

OVERALL WIRING

The Main Board – SMPS - Power Button – Speaker - Function Board Wiring - Connector pin voltages

The Main Board - SMPS, Side A/V - Sub Tuner Board - Power Button -  Speaker Out Wiring.

SMPS MODULE WIRING

CLICK ON THE PICTURES TO ZOOM IN