PlayStation 4

There are 3 different models of the original Playstation 4: 10xxx 11xxx 12xxx

The last 3 characters signify locale and hard drive size, so they're not applicable to repair.

There are mainly 6 different kind of faults. Those 6 are Blue light of death (BLOD), Pulsing BLOD (pulsing blue forever), White light of death (WLOD), disk drive issues, hard drive issues, and software issues.

=BLOD=

The Blue light can tell us many different fault conditions if observed properly. The BLOD is a general term for a blue light upon turning on that shuts off without going to a white light. There can be many sub-manifestations of this. One example is a blue light that does not pulse, that goes off after 6 seconds.

For a BLOD, you will need to time how long the light stays on, and any noises.

Pulsing BLOD
A Pulsing BLOD, signifies a hardware failure that is not terminal to the process, A normal BLOD would shut down, because for example, there is a short on the 12v rail. A Pulsing BLOD, however, is still a severe failure but the console is able to stay running. One example of this is RAM amnesia, which the ram does not keep information, but still acts normal otherwise.

WLOD
A White light of death, is a console that turns on to a stable white light, but has no output from the hdmi port. Most of the time, this can be attributed to the HDMI circuitry. In some cases, the console can shut down from a white light.

Disk Drive Issues
Disk drive malfunctions are a general term for a disk drive that is not functioning as intended.

Hard Drive Issues
Issues that signify a dead or failing hard drive. Examples are: freezing in home menu, crashing when loading games, games taking very long to load, very long boot up time with black screen after Playstation logo, very long hard drive check time