All About T-CON Board Signals and Voltages (T-CON Repairing)

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Hey, Guys Welcome back to our website Ptechnicians.com I hope you will be fine. So today in this latest post we are going to share the all information about T-CON Signals and Voltages.

And If you want to learn or improve your knowledge of T-CON Board Repairing then this is the best and useful post for you. So please read this post till the end and then say thanks in the comment section. So let’s start.

All About T-CON Board Signals and Voltages
All About T-CON Board Signals and Voltages

What is T-CON Board

The Timing Controller (T-CON) Board is the main circuit that you see in between the TV Motherboard and LCD/LED Display Panel. It transfers the Generated video from the main motherboard to the display panel. The T-CON board also genrates the volatges for the panel to be opretaed.

How T-CO Board Works

You will see the DC to DC Booster IC on the T-CON which transfers the exact required voltages for the display panel. These voltages may be 3.3V, 5V, 16V, or 26V or more, depending on the panel.

Some T-CON Boards work with 2 LVDS cables from the motherboard. T-con feed is transmitted from only one of these cables. In the TVs with the 3D features, 12V is transmitted from the mainboard to the t-con via a socket other than the LVDS cable. Consider this when making repairs

How to Repair T-CON Boards

First You need to check the 5V or 12V, If you are not getting 5 or 12 Voltages from the Motherboard then check the Panel Power section on your Main Motherboard. If T-con supply is available but 16V and 26V is not available, check the inputs and outputs of the DC to DC converter ICs.

These ICs may be damaged due to our heating. These Converters ICs will not be activated until the “PANEL_ON or PANEL_CTL” signal received from the Main Board. Some T-CON does not work if the display panel is not connected with it.

If the voltages are present but there is not picture then check the signals that are transmitted from the motherboard to the chip. Please do this measurement carefully. If the probe mistakenly shorts the circuit then you may lose the T-CON, Panel, or Motherboard.

Now, If you measure the voltages between 1V2 and 1V6 on the data lines, data signals are being sent from the motherboard to the t-con. Now you need to follow the voltages transmitted from the controller to the panel on the panel control card.

If you can notice the fuses on the panel are blown, Heating, corrosion, or oxidation in the SMD parts, the panel is defective. If the PCB is Okay then you can change your T-CON Board, it is faulty.

T-CON Board Signals and Voltages

VOFF, VGL, VGOFF, VEEG-5V to -7V
VON, VGH, VGON, VDDG20V to 30V
VDA Avdd Vdda13V and 20V
VDD Vlogic Vddd Dvdd3.3 
CPV1It Do Set the Timming of CKV1 and CKVB1 Signals
CPV2It Do Set the Timming of CKV2 and CKVB2 Signals
CPV3It Do Set the Timming of CKV3 and CKVB3 Signals
CKV1, CKV2, CKV3Vertical Scan Driver High Voltage Output Signal
CKVB1, CKVB2, CKVB3Vertical Scan Driver High Voltage Reverse Output Signal
CKVCS1, CKVBCS1Connect the CKV1 and CKVB1 Signals together
CKVCS2, CKVBCS2Connect the CKV2 and CKVB2 Signals together
CKVCS3, CKVBCS3Connect the CKV3 and CKVB3 Signals together
BOOSTMain Supply Input
COMPFault Amplifier Reference Input
DISHIt discharges the voltage in supply errors
DLYInitial Delay Adjuster
ENActivates Scan Integration. 
It works simultaneously with DLY
FBFeedback Input. 
It has a supply of around 1.24
GOFFCKV is the – (negative) supply of CKVB and STVP signals

11 COMMENTS

  1. Thank you very much sir.i have followed some courses.but I don’t have enough knowledge about led TV’s.this is very useful me to improve my knowledge.thank you, thank you very much sir.

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