I have a ps2 v7 and it has a dms4 pro chip. It has being working wonderfull for the past 3 years, but two weeks ago it die on me. I was playing when sudenly it froze, I restarted and nothing came up. All I get its a black screen, no sound and the tray does not open.I can hear the fan running and the green ligth come on.I've being searching all over the internet for the past couple weeks to fix my ps2, but nothing! I checked all the fuses and they are fine. If you guys could help me, I will apreciate soo much.
Do THIS AT YOUR OWN RISK.
Open the PS2 and Check the worm gear MOTOR ASSY. Try to move it with your finger, if you CAN'T move it it's probably seized and would need to be replaced. If you CAN move it, on the disc spindle is a small switch, power the unit on and press the switch with your finger, the laser should move each time. If the laser moves, try cleaning and lubricating the rails and the worm gear. If the laser DOES NOT MOVE, you may have a blown IC. Replace the PS2, it wouldn't be worth it to fix.
Thanks for replying
I checked the Motor Assy gear and it moves freely. I don't know what switch you are taking about. I was thinking buying a new ps2, but I don't want to go through the whole hassle of modifying it again. I love my fat ps2; because I can run games from my hdd. I would like to fix my old ps2! Any sugestion??
Look at the spindle that spins the disc, just a little to the right is a tiny "homing switch" (it "homes" the laser)(this switch usually don't go bad)
Also look for loose or broken cables. At the spindle, the drive assy, the laser. Check the connections at the motherboard where the cables lead. Underneath the tray door is where the tray motor is. It will have a belt, check that area too.
You can switch lasers with a known good laser as a test. The laser though wouldn't stop the tray from opening. At least it doesn't on mine.
I think the problem is a blown IC.
Watch the laser for movement when you power on the the unit, press the eject button, if nothing happens, I would look toward the main board. Also take a look at the modchip it may be bad.
Did you check if the laser moves when you press the reset/eject button?
If it does, did you try switching the laser? Ask a friend to help with the laser test.
You indicated you checked ALL the fuses and they were fine?
The IC has a tiny fuse near it called an ICP (IC protector), did you check it? Also, near the power supply is a tiny fuse that may have gone bad. These fuses are black and will have a white number on them.
The IC chip will have a number like LA6508 or BA5815FN this is what drives the motor and the spindle. It is checked with an oscilloscope. You can look for areas that appear burned around the chip, you can smell for burning too. Also check the solder points of the chip to see if they look fused together from too much heat.
The MODCHIP can be checked the same way.
thanks for your replies. I think I am going to send it to a profesional, so they can fix it. Do you know a good and reliable place that I can send to? (usa)
