STM32L476G-EVAL TFT LCD white Screening Problem

[jkoo]

Hi 

I am using STM32L476G-EVAL board. L476G Demonstration Program operation was good at purchasing time. and I burned other program hex using ST-Link. (ex GPIO, CAN example)

Some days was later. EVAL board TFT LCD Screen was All White. and it seems to be OK in LED control. 

I checked Jumper setting in data sheet. and tried again firmware download. but TFT LCD was all white. 

How can I check TFT LCD basic control in hardware and Firmware ?

I hope that TFT LCD module(MB989) is not break down.

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Evaluation Board name : STM32L476G-EVAL/04-0

Compiler : True Studio

Power supply : USB power via Notebook

Firmware download : ST-Link

HEX code name : STM32CubeDemo_STM32L476G_EVAL-v1.0.4.hex

[Tesla DeLorean]

Build and download one of the other examples using the screen.​