Hi there!
Cost based, it’s better to replace the HDMI port on the motherboard! But, you do need some serious soldering skills and the equipment to replace it!
You can replace the whole motherboard, but I would try to replace the port first! If it failed, you can always replace the motherboard afterwards.
You can also bring it to a local repair shop and ask them to do it for you!
I know that Gamersrepair (https://www.gamersrepair.com/) sell motherboards and their service is awesome! If it’s not listed there, you can always ask them by sending an email. (They are located in the States, but ship worldwide).
If you need any further help or guides, please let me know!
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