Signs PS3 is going to fail?

I have this PS3 that I don't really play, but I was intended to sell it soon for cheap.
Well, here is a full bit of things that are wrong with it:

- The HDMI port does not entirely work. The system will detect that an HDMI cord is plugged in, however, when switching to the HDMI output, the screen stays black. Sony says this is something to do with a handshake software error, and not hardware. This occurred back in 2009 and I never was able to figure out how to repair it. So in otherwords, to use HD quality video you must have an HD Component Cable.

- The Disc Drive is probably failing. It reads discs perfectly, however, when I eject the disc sometimes the disc refuses to eject, or, it only partially ejects and I have to pull it the rest of the way.

- Sometimes the Wifi cuts out randomly. This never happens on any of my other devices so I know its not the Wireless Box.

Any idea if this means it is failing? I bought it in late 2007 and it has held strong since, but ever since 2009 those issues starting popping up. The HDMI issue in 2009, disc issue in 2012 and Wifi issue last year.

 

Gonna add:
Not really, just bumping. Kinda would like expert answers

 

plug in both HDMI and AV cable to TV

 

I left my ps3 on for 6 hours with a game paused and when I came back to it there was no video, I turned it off and back on and got audio but no video. After testing the fans I got a red flashing led so I opened it up and took some dust out, but there wasn't much. Safe mode worked, the error message if you tried to boot without a hard drive worked, after defaulting the settings it worked until it tried to switch to 1080p. Eventually instead of no video signal in 1080p it started working but with a sine wave effect.

I left it turned off until the next day and it worked fine. This was a couple of days ago and I haven't played any games on it since, just streamed some movies from a NAS.

I expect it will probably fail on me sometime. I've had a couple of game lockups over the years, but I always put them down to game bugs. But it could be the GPU needing reballing.