I used
this PS2 to HDMI adapter and
this HDMI switch.
Which HDMI port that might be blown are you talking about, the TV's or the PS2's?
It's the first time I have these issues and before I used different HDMI switches which had more than 3 HDMI ports since I have 5 devices that use HDMI (a set-top box, the PS5, the PS3, the PS TV and the PS2) but although they were new they stopped working and I don't know why they needed a USB port to work unlike this one so I returned to this one (I use two of these HDMI switches of the same brand and with the same number of HDMI ports since they always worked fine).
One thing I've noticed recently and that I don't know if it happened before is that sometimes after turning on the PS2 its led starts to change from the HDMI port 1 to the 2, goes back to the 1 and then returns to the 2 when the PS2 is connected to the 2 and another device that isn't even turned one when I turn on the PS2 is connected to the 1.
Also, every day I click on the PS5's external HDD's extension cord's reset button before going to bed because the PS5's external HDD or the extension cord does a weird and annoying buzz-like noise when the former is connected to the latter (even if the PS5 is not turned on) and I'm afraid I can have a fire. I can't understand if the noise comes from the PS5's external HDD or the extension cord in which the PS5's external HDD is connected but it starts after connecting the PS5's external HDD to the extension cord.
I've changed the extension cord (and I still have this problem) and I already had this problem when the external HDD was connected to the PS4. Does this mean the external HDD may stop working, or even worse, may it fry all my devices connected to the extension cord or/and even have a fire? I only bought the external HDD two years ago and I've had this problem since then. Maybe the extension cord's reset button broke the HDMI switch (the PS2 and both HDMI switches are connected to the same extension cord)?
What are OSSC and Retrotink? They're very pricy and I no longer have the original composite cables and I bought component ones but the screen is always flickering (it goes black for a second until it returns to normal) hence I bought this PS2 to HDMI adapter.
Maybe I should try changing the HDMI switch. Do you recommend one, mostly with 5/6 HDMI ports, 4K and with a remote controller?