In the archive working tested 24C32 and VCT7993P dump. Also you will find pictures with motherboard SDA and SCL pinout connections and CH341 SDA and SCL connections. First MENU language will be in Russian but then you can change it. Better you do a factory reset after programming. Read and write with CH341A programmer via modified Postal3 Software. You can find online easy instruction how to make this working if you don't have a Postal3 programmer. I will like to mention that programmer RT809H cannot read and write VCT7993P correctly yet because of its software fault. This dumps can fix variuous issue like discoloured picture, no sound, no Stand-By LED light after replacing Power Supply capacitors, etc.
If this solve your problem please don't forget to click "Thank You".
Прошивка скачана лично программаторои eJTAG. В прошивке не криптованный дамп eMMC объемом 3.64 и два BOOT раздела. Проверенна лично прошивкой в LG 42LB572V