Why will it not play discs?

Sounds like the laser pickup unit to the DVD player is faulty. Contact any service technician to replace it. The disc mechanism should be taken out of it to replace this part.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

when playing a disc what.. the antiskate is not funtional..is the disc all sctatched up?

follow this steps and fix it. God bless you

Does not play disc

1. No disc. - Load a disc into the tray.
2. Disc has been loaded upside down. Place the disc with the label side up.
3. Disc region code does not match region code of the player.
4. Disc type is not the correct type to play.
5. Disc is damaged or dirty. Clean the disc or try another.
6. Moisture may be condensed inside the unit. Remove the disc and the leave the power on for one or two hours.

have you checked to see if your ps3 has taken any damage?

see the causes and fix it: God bless you

1. No disc. - Load a disc into the tray.
2. Disc has been loaded upside down. Place the disc with the label side up.
3. Disc region code does not match region code of the player.
4. Disc type is not the correct type to play.
5. Disc is damaged or dirty. Clean the disc or try another.
6. Moisture may be condensed inside the unit. Remove the disc and the leave the power on for one or two hours.

The laser is wearing out. If it is under warranty you can send it back to Sony for free repair. If not, they will charge you $150 to fix it.

Recording tv program or duffing none codes dvd disc,must wait it for finalizing code done completely before can take it out or can be watching it on the same DVD recoder player or a compatible one.Record other disc,just must wait the disc to completely finalizing it final codes,the disc should play with no problems.

Either the disc or the player likely need a good cleaning. Clean the disc with a soft cloth, clean the player with a good cleaner disc.

before you can watch a recorded DVD on another DVD player you must finalize the disc. to finalize the disc put the recorded disc into the DVD recorder, when the DVD loads it will show the titles that are recorded on the DVD on the screen
push the stop button it is the button with the square on it. the screen will go blank or it may let you watch whatever tv channel you are on if you have your tv ran through the recorder, push the setup buton a new screen will come up, with the arrow down button scroll down and highlight disc edit, press ok another screen will come up, with the arrow down button scroll down and highlight "finalize", press "ok" it is the button in the middle of the arrow keys
scroll up and highlight "yes" press "ok" the recorder will finalize the disc and it can be watched on any DVD player, just remember when you finalize a disc you cannot add anything else to the disc.

Have you tryed to use a lens cleaning disc yet. The laser lens on these players and recorders alike, must have the lens cleaned every oince in awhile. If that does not help, most likly you have a bad laser pickup assembly and you will need to replace the plaer as to have that repaiered, you could buy a new unit. Good Luck