This video to show how to repair ST5461D07 LCD Display No picture problem by changing TCON DC voltage VGH VGL by a simple T-CON Tool DC offline progammer,

It Support four DC chips RT6943A 2510S P303-11and P303-19.
It support D07 T-CON Board ST5461D07-1-C-D ST5461D07-3-C-1 ST5461D07-1-C-3 ST5461D07-1-C-B CSOT 65" ST6451D01-1-C-4
Support AUO 55T32-COF 55T32 COL55T32-COM 55T32-COH655-COG65T55-COJ.
The HV550QUB-H11 of the common BOE TCON on the motherboard can also change these four DC chips. Whether on the motherboard or on the side pcb scaler, you can regulate the VGH and VGI voltage.

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