• Lcd Television Repair Tips
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• Collection Of Lcd Television Repair Tips List

Lcd Television Repair Tips

Lcd tv repair basicIntroduction to LCD TV RepairThis month article is about the basic LCD TV repair. I do get emails from beginners asking abouthow to understand and troubleshoot LCD TVs. Although this is not a complete article about LCD TV repair, Ibelieve this article in some ways could help them in understanding the main function of the important boardsfound in LCD TVs. Let’s start.A- Power BoardB- T-con BoardC- EMI Filter board (In other designs this board is built into the Power Board)D- Inverter Board (In some designs this board is built into the Power board and is called as I/Pboard)E- MainBoardF- JackpackG- Side Key Panel/Power Control/Remote Receiver Unit (IR/LED control)H- Left SpeakerI- Right SpeakerJ- LCD panelK- LVDS cableThe function Of LCD TV sectionPower BoardThePower Supply Board is usually the biggest and heaviest board found inside the LCD TV. Some repair techs callpower supply board as “Power Supply Unit” and “Power Supply Module” or just “PSU”.

It converts the main AC supply into DC voltages that can be used by the circuit within the LCD TV.Sometimes the power board is joined together with inverter board and is called as I/Pboard.Common faults - No power, low power, power blink and intermittent no power.Timing Controller Board (T-con board)The T-Con Board is the smallest boardfound inside LCD TV and is usually only found in LCD TV's. Thefunction of T-con board is to control logic signal of gate and source for driving TFT LCD. The T-Con Board issometimes referred to other names, such as 'Controller Board,' or 'Control Board.' A Typical T-con Circuit BoardCommon faults - White Display, No display, Double image, Display distortion (black and white vertical bars onthe screen).

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Multiple vertical/horizontal lines across the screen.Inverter boardTheinverter boards are usually found along the edges nearest to the TV Panel and are only found in LCD's. Theseboards function is to convert the low voltage DC supplied (12V or 24 V) by the SMPS into a high AC voltage (500to 1500 Vrms) to light up the backlights. These boards can be found as a single board or built in with the powerboard called as I/P board.Common faults - Display shutdown after few seconds, Dim displayMainboardThe simplest way toidentify the Main Board is to look for the circuit board with the audio and video inputs andoutputs. Sometimes the Mainboard is called as Motherboard, Main Unit, Digital board, Scaler board, A/Vboard, Main Module, Logic board or even A/D board.