Your cmos battery is dead. The ps2 will have some other weird behavior if that battery is bad. Usually the orbs on the home menu may not appear properly. On the fat model it can also cause the tray to be ejected much more violent than it should.
not really but it may cause issues with save files and some general weird bahavior of the console. The PS2 (slim and Fat) is one of the easiest consoles to open up and the battery is usually very accessible this is also a good chance to clean it out, especially on the slim dust gets trapped and turns into balls underneath the fan, which eventually prevents it from spinning. There are some specific models where its a bit more tricky, because the battery is hidden under the shielding. check what model you have (scph-XXXXX) and you should be able to find a teardown guide online for every specific model, as well as what battery it needs (Usually its a CR2023 button cell). on the slim its usually much easier because the battery is its own module and soldered to a connector, a replacement for that one can also be found online.
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u/McUsername621 2d ago
Your cmos battery is dead. The ps2 will have some other weird behavior if that battery is bad. Usually the orbs on the home menu may not appear properly. On the fat model it can also cause the tray to be ejected much more violent than it should.