This post from another forum just OPENED my eyes as to NOT keeping the PS2 vertical and I think other people should know about this as it will help their ps2 to "live longer".
And all the credit for this info goes to EnTiTy from www.ps2newz.net. He is one of the pro on that board.
This is what he has to say.
Horizontal. Its hard to explain over the net but its all to do with gravity. Horizontal is the way to go im afraid, because it has an equal amount of gravity and spins on its axis evenly with no distortion and reading problems.
Now vertical the lowest point of gravity is south of the disc it has an un equal proportion, causing the weight of the disc to spin un even ie the disc from the middle onwards is going closer further closer further closer further like a plate wobbling.
All the time making the optic work 10 times harder to focus its beam on the pits and lands this drastically reduce's life of the ps2.
Now ask me how many ps2's i have repaired and what the first thing i ask them when they tell me its having trouble reading disc's, yup do you have the ps2 vertical they say yes i fix it tell
them the above and warn them i will not guarentee the repair unless they have the ps2 in a horizontal position and i know if they dont because of the below.
To further this, the laser coils are 2 thin peices of taught wire with magnets at either side like below
I 0 I
I= WIRE 0 = optic lense that when its in a horizontal position = gravity on both coils
now vertical
_
0
_
yup you guessed it gravity is a ***** it puts physical force against the coils because of the weight of the lense slowly they go from being taught holding the lense central and ideal for reading discs to become politely "slack as a bag of bollocks" like below
~
0
~
At this stage, you can only play the ps2 in the vertical position because the laser has become worn and is on its way out when this happens its not long before it can muster enough power to read disc's at all.
The proof is also in the pudding some of you will remember sony racalling early versions of the ps2 because it was scratching discs in the vertical position. The reason for this was because of the wobble gravitational effect described above.
Its up to you but horizontal is the only way to go and prelongs the life of the laser dramatically take this from someone whos see's these things day in day out and 99% of laser repairs i do are because of the vertical position yeah it looks good and dont take up much space as it is when horizontal but it's a major flaw all vertical optics have and thats a FACT.
I also point you to this cool thread here http://www.ps2newz.net/forums/showt...p?threadid=8604
explaining other pitfalls reguarding the optic's coils
EnTiTy
In the end, I have opted to keep my ps2 HORIZONTAL. Hell, it even saved me money from investing in a vertical stand.
Hope this info helps other people.
Bye for now.