I’ve already asked this and it got deleted, so I’ll be super-specific this time - I’m not looking for tech-support, or troubleshooting, or a how-to. I just wanna know if this is a known thing that happens to old TVs; I’ve never heard of it nor did searching net anything of significance.
so this 20-year old LCD TV I got works only with some HDMI devices, namely my desktop and a laptop. it doesn’t detect a PS4, android box, or another laptop. with the ones it works, it works without issues, image pops up instantly, no aberrations, delays, nothing. with the other ones it just sits there, “no signal”. there are three HDMI inputs, same deal with all three.
intuitively, it rings like signal strength issue (?), but Imma defer to someone with experience.
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Some older TVs from that era were finicky about certain HDMI signals, notably those coming from PCs.
Could be related to HDCP, the copy-protection mechanism in HDMI.
I know very little about it, but it is a likely possibility when some devices work and others don’t. If a device (like the PS4) enforces HDCP and the TV doesn’t support it, it will appear to not work at all.
Can you try disabling HDCP on the PS4? Does that fix it?
Hdmi has versions. Your tv is probably only supports a really old one.
I don’t think that’s the case; it handles the image from a 4K capable device fine but doesn’t from a supershitty android box. it’s an electrical issue, somethings busted in there, that’s why I’m in this community.
Just tell us the model of the TV and the devices that work, and the devices that don’t.
If you want an answer to your question of whether this happens to old devices, yes, it does. And the way that it usually happens is that the old device doesn’t understand newer signal protocol versions.
That would explain why some devices work perfectly and some devices don’t work at all, because an all or nothing situation suggests something going wrong with a handshake or other signal negotiation protocol.
Some devices fall back to earlier versions, and some don’t. Some only fall back if instructed to, so even if it does support an old version it expects to be told.
Another point of failure could be the cable itself, where it won’t pass certain types of signals correctly and might screw up the handshake. Have you tried other cables?
