I have two PlayStation 2 SCPH-50003. Both used, don't have any mode chip on it! One of them play all game PlayStation/ PlayStation 2 black blue and silver discs.

The other played SSX 3 and Tomb raider legend but videos where slow and gameplay had problems. Just tested it and minutes later stoped working.

I Ibought2 lenses KHS-400C. I removed the solder spot from both of lenses. I tried both of them and none of them worked! I tried from the other working PlayStation 2 and didn't worked either! I tried all 4 KHS-400C on the working console and they all worked!

What else can cause Disc read error? Moreover I replaced the drive with motors and eject mechanism from the working one to the non working with no change!

Before anything unplug your PlayStation and try the power button couple a times to turn on the PlayStation.

Just check the fuse with a multimeter. It is a cylindrical tube with metal on it’s two corners. The easy way is to check continuity with a mutimeter which is a symbol with a speaker on it. Touch red and black probes and you will hear a beep. Connect the two ends of the fuse and if it beeps then fuse is ok. You can even check it while fuse is on the board. If ok and PlayStation is not working then there is a problem somewhere else on the power board, mostly…

Good Luck!!