In this video we will show how to replace the main board, power supply board and t-con
board that are included in the Hitachi LE55A6R9 TV repair kit.
One thing that should be noted is that this TV model has a high failure rate in the LED
backlighting.
You will want to do all testing possible to be sure the problem is not the LED backlighting.
It is recommended to take pictures during the repair process to use as a reference point.
Be sure your TV is unplugged.
The first board we are going to replace is the power supply board.
I will start by disconnecting all of the cables and connections on
the board.
I will remove all of the screws that hold the board to the TV panel.
I will slide my replacement board into position and then tighten it to the panel with the
screws.
I will reconnect all of the cables and connections on the board.
The next board we are going to replace is the
t-con board.
Start by disconnecting the LVDS cable and ribbon cables at the t-con.
These connections are very fragile.
The t-con board may be covered with a shield that needs to be removed.
Remove the screws and the board from
the chassis.
Align the replacement t-con board and install
the screws.
Reconnect the LVDS and ribbon cables.
The next board we are going to replace is the main board.
Start by disconnecting all of the cables and connections.
Remove all of the screws and the board from the chassis.
Align the replacement board and install
the screws.
Reconnect all of the cables and connections on
the board.