Hi!
Is the HDMI port still OK? Do you get an RROD?
It also could be the HDMI IC: https://www.aliexpress.us/item/3256805715715898.html?spm=a2g0o.detail.pcDetailTopMoreOtherSeller.1.16c5c1okc1okOd&gps-id=pcDetailTopMoreOtherSeller&scm=1007.40050.354490.0&scm_id=1007.40050.354490.0&scm-url=1007.40050.354490.0&pvid=2046b1a5-c38f-4b67-8390-0d0e533b389c&_t=gps-id%3ApcDetailTopMoreOtherSeller%2Cscm-url%3A1007.40050.354490.0%2Cpvid%3A2046b1a5-c38f-4b67-8390-0d0e533b389c%2Ctpp_buckets%3A668%232846%238114%231999&isseo=y&pdp_npi=4%40dis%21EUR%216.48%215.71%21%21%216.86%216.04%21%40211b65d417218906739344418ed6a9%2112000034775032122%21rec%21NL%21%21AB&utparam-url=scene%3ApcDetailTopMoreOtherSeller%7Cquery_from%3A&gatewayAdapt=glo2usa4itemAdapt
This one is difficult to replace, but if you do have experience with soldering, the repair will be easier.