PS4 powers on white light and controller syncs up but no video output to the TV.
premature diagnosis- initially i thought it was an issue with the HDMI port because it felt kinda loose, and its a pretty common problem so i replaced it with a new one, and double checked to make sure the joints are good under the microscope as you can see in the following picture all looks well.
But.. still no video :-/
So then i started probing around the hdmi circuit with a multi-meter and found several smd capacitors that read almost 0 ohms in other words complete short..
the capacitors themselves aren't bad infact these smd caps rarely go bad... but this was a good indication that there was an issue with the hdmi communications chip.
the PS4 uses a Panasonic MN86471A QFP type IC its on the bottom side of the board hidden under a heat shield that requires a lot of heat to desolder properly..
Here is the chip under the scope before and after replacing the chip..
With the new hdmi chip installed the caps on top side of the circuit now measured the correct resistance... But i still got no video, however i was positive the chip was bad and the replacement was good and genuine chip.. so i went back and sure enough found 2 blown signal filters ... generally its best to replace them as they are put there for a reason, but in this case all i couldn't find them easily so i decided to just jumper the pads using some 30 gauge wire..
Woot! that did the trick finally we got video output on the tv :-) I hope this helps someone that has a PS4 with the same issue.
So then i started probing around the hdmi circuit with a multi-meter and found several smd capacitors that read almost 0 ohms in other words complete short..
the PS4 uses a Panasonic MN86471A QFP type IC its on the bottom side of the board hidden under a heat shield that requires a lot of heat to desolder properly..
Here is the chip under the scope before and after replacing the chip..
