You will need a soldering / reflow workstation for this repair. You will also need flux paste, board cleaning fluid, and thermal paste for your GPU. You will also need a replacement HDMi port.
Don't attempt the repair without all of these bits of equipment.
The soldering station is important. I recommend the Yihua All in One Soldering & Rework Station. It should be available in the UK, the USA and elsewhere.
The job could also be done with a hot air gun (paint stripper) and a half-decent soldering iron, but be careful!!
If you don't have an output from your PS4 console to the TV, then check the back of the console. Can you see any damaged pins on the port? Very often you will see damage to the port.
If you see one or 2 pins bent my advice is this -
TRY AND STRAIGHTEN THE PINS OUT WITH A FINE PAIR OF TWEEZERS. You will need a magnifying glass, if your eyesight is anything like mine.
Very often, straightening the pins out CAREFULLY, will resolve your problem, without having to open up your console.
However, sometimes you will not be able to see any port damage, without opening the console, stripping the board down and inspecting the pins on the motherboard side of the port.
At this point, please check my PS4 Software Troubleshooting pages first.
It could be a software fault, or a hard drive problem. Also note, that if you have a flashing blue light then you need to check the Flashing Blue Light Repair Page first.
If you have troubleshooted on those pages first, and still don't get a picture on the screen, then you may have a faulty HDMi port..
The PS4 HDMi Replacement fix a very tricky repair to get right. This is a job for the professionals really, but if you want to give it a go, here's the vid.
I've chosen an HDMi port replacement video from the guys at NorthridgeFix.com here for you.
Now, there are many HDMi port replacement videos on YouTube, but I've chosen this one for a good reason.
Most video's you see will get you to heatgun the old port off, and then heatgun the new one on. Some of the worst videos won't then show you how to solder the port on - they just make out that you can just heatgun the port on, and away you go.
But you cannot do this.
In fact, even if you heatgun the new port on, and then solder the pins, you are still likely to have problems.
The reason for this is this -
You will struggle to line the pins of your new port with the pins on the motherboard.
When you heatgun the new port on, the pins are so tiny that the chances of them aligning properly in the exact spot you want them to be in, is low.
You will find that you are trying to solder the pins, and they are a millimeter or two out of place. Trust me, you will be tearing your hair out (unless you're bald like me).
I chose this video specifically because you need to anchor a few of the pins in place FIRST, allowing the port to be correctly aligned so that you can solder the other pins down.
You will need a fair bit of equipment to do this repair. You will also need good eyesight, or will have to invest in a magnifier or camera. The individual pins are tiny.
If you haven't done much soldering before, my advice is to skip this repair, and leave it to the professionals.