In the years running my store, I've seen nearly every problem under the sun.
NES:
- The metal pins that clamp unto the game cartridge wear and don't make full contact.
SNES:
- The plastic that encases the AC power nub snaps off.
PSX:
- Disk reader becomes offset by generated heat. Short-term solution was to play the system on it's side or even upside down. Eventually would become unreadable.
- The plastic disk clamp would eventually wear down from use causing three key support sections to break off causing the ball bearings to become dislodged.
Saturn:
- The disk reader would give up the ghost suddenly, but not from wear and tear.
Dreamcast:
- Early in it's life, certain games would not read if they were produced by certain factories.
- The disk reader would give up the ghost suddenly, but not from wear and tear.
- Heat would slightly morph the internal fan's casing causing it to jam.
PSOne:
- The plastic disk clamp would eventually wear down from use causing three key support sections to break off causing the ball bearings to become dislodged.
- The power cord would form a short in the thin wire and need replaced.
PS2 - Early:
- Handful of systems were defective out of the box.
- The system had many open vents which attracted immense amounts of dust. This would clog many areas of the laser requiring minor to precision cleaning. Eventually the disk reader would give up the ghost.
- If system fell, door would usually become dislodged and jammed. Easily fixable with tinkering, but most people don't know how.
- Two small plastic teeth on the laser arm guide it back and forth. Over time they could wear down causing the laser to become stuck.
Gamecube:
- Heat would slightly morph the internal fan's casing causing it to jam.
- The disk reader would give up the ghost suddenly, but not from wear and tear.
Xbox:
- The disk reader would give up the ghost suddenly, but not from wear and tear.
- Power supply would blow out from the stress of the power cable being insterted and removed or from gravity if the cable was hanging down sharply.
- Internal HDD would conk out.
- Motherboard would give up the ghost suddenly, but not from wear and tear.
- System would turn on as soon as plugged in. Would not turn off unless it was unplugged, and over all, very odd behaviour. Possibly tied to the power switch board, but more likely the Motherboard.
PS2 -Later:
- The disk reader would give up the ghost suddenly, but not from wear and tear.
- If system fell, door would usually become dislodged and jammed. Easily fixable with tinkering, but most people don't know how.
Xbox 360:
- Handful of systems were defective out of the box.
- The disk reader would give up the ghost suddenly, but not from wear and tear.
- The external power block would blow out.
- The door would start jamming when opening, but a slight touch as it jams would open it.
- The system would enter a startup lockdown intidicated by the three red rings. Often tied to the GPU chip overheating causing the screen to become pixiled.
PS2 - Slim
- The disk reader would give up the ghost suddenly, but not from wear and tear.
- The plastic yellow ring on the power port would wear and break from either heat or weak plastic. This would cause the system to be unable to recieve power properly.
PS3:
- Handful of systems were defective out of the box.
- Not enough time has passed to see longterm issues.
Wii:
- Handful of systems were defective out of the box.
- The GPU chip over heats causing the screen to become pixiled.
- Not enough time has passed to see longterm issues.