The PS had weak plastic laser eye rails. Prolonged use warped them causing laser/disc misalignment, so you would have to often play with the console up side down etc to try and adjust for it.
The PS2 has the disc read error, lost multiple class action lawsuits over the design flaw.
PS3 had the yellow light of death. Design/manufacturing flaw like the Xbox red ring of death.
The PS had weak plastic laser eye rails. Prolonged use warped them causing laser/disc misalignment, so you would have to often play with the console up side down etc to try and adjust for it.
The PS2 has the disc read error, lost multiple class action lawsuits over the design flaw.
PS3 had the yellow light of death. Design/manufacturing flaw like the Xbox red ring of death.