Philips 58pus8505/12 flickering lines

Hi everyone, after about 2 minutes, stripes will start appearing in the center of the screen, which will blink every few seconds.
In the first few minutes after the cold start, everything is fine.

I replaced the T-CON with an unoriginal one from Aliexpress, it got worse, the stripes changed and were visible all over the bottom half.

Please help me, what else can I do?