Plasma TV Repair Tutorial - Plasma TV Parts Overview - Common Plasma TV Symptoms & Solutions

Описание: Plasma TV Repair & Problems Part Overview How to Identify Plasma TV Repair Problems issues
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While no two Plasma TVs are the exact same, there are some fundamental pieces needed to make a Plasma TV. Let's remove the back cover and bezel and take a look inside of a few. With the cover removed, you can see that a Plasma TV is basically a series of fused glass display panels with a sheet of chemically treated protective glass in the front and printed circuit boards in the back. The fused glass portion makes up the plasma display panel or PDP Assembly, and the area where the circuit boards are arranged on the backside of the panel is typically the chassis. The PDP Assembly is a system of millions of cells filled with a small amount of mercury and various gases and phosphors. When excited, about an electrical charge the mercury gives off UV photons which hit the phosphors and give off visible colored light creating the mosaic of colored pixels that make up the images on your screen. The screen is connected to the chassis PCB's via copper and gold ribbon cables. These ribbon cables are permanently fused within the screen and can only be repaired by replacing the entire PDP Assembly.

While plasma display technology may seem complicated, replacing Plasma TV parts only requires a screwdriver and some patience. Finding a replacement screen requires both the panel information found on the identification labels on the back of the PDP Assembly, and the model information found on the back and or sides of the TV cover. Replacement panels are typically high in price and hard to find. In most cases, a cracked or defective screen means that it's time to purchase a new TV.

The backside of the PDP Assembly is typically referred to as the chassis. This is where the fundamental circuit boards are mounted. While plasma boards vary in appearance and location, a Plasma TV needs the following items in order to function:

The Power Supply Unit Board (PSU) takes in and distributes power throughout the TV. This board is either directly connected to your AC power cord or is connected to the AC adapter.

The Main Board typically manages your accessory inputs and outputs and houses the TV Tuner.

The Y Sustain or YSUS board is located on the left hand side of the chassis. Some manufacturers also refer to this board as theY-Main Board or SC Board. The Y-Sustain connects to the PDP Assembly through a buffer system most commonly called a Y-Buffer or a Scan Drive. This buffer system can be comprised of one or two boards or can be built directly into the Y-Sustain.

On the right hand side of the chassis is another sustain board. Depending on manufacturer this sustain board is called the X-Sustain, X-Main, Z-Sustain, or SS Board.

Running along the bottom of the chassis is a system of skinny boards known as Address or Logic Buffers. In some older and larger Plasma TVs, there can be another line of Address Buffers along the top of the chassis. Some manufacturers call these boards Logic Buffers while others may give each buffer a different identification letter typically starting with the letter C.

The Logic Board is connected to the Main Board and Address Buffers via flat ribbon cables and can sometimes be hidden underneath the Main Board.

ShopJimmy always suggests searching for replacement TV parts by part number but sometimes more information is required to select the correct part for the TV. Before beginning the search for replacement plasma TV parts, it is best to take a look at the labels on the back and or sides of your TV and write down the brand, model number, serial number, and model code if available. Some replacement boards are chassis or panel specific so be sure to look for labels on the back of the panel and write down the brand, model number, and serial number of the panel as well.

Top Common Plasma TV Problems:
• Half Picture, Bad (Y Sustain Board & Bad Y-Buffers)
•  Bad Logic Board
•  No Power, No Standby Light, Bad Power Supply Unit
•  Power Cycles Off, Red Standby Light Blinks (Bad YSUS, Bad Main Board)
•  Bad Capacitors (Blown Caps)
•  Vertical Lines, Vertical Bars
•  Bad Main Board

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