When I try to put in a disc it won’t going and the HDMI port makes my tv screen flicker as if I had no signal while using an antenna
have you tried using a different hdmi cable? that flickering sometimes is caused by a bad cable… start trying with another one…
Yes and it still continued to do the flickering
Check if the port is soldered correctly to the board, also check all the hdmi circuit components, also ic encoder…