What could be the problem with my hyundai dvd player as it fails to light up the lcd screen.it cannot open even the cd tray.

Hyundai DVD-320A / DVD-360A / DVR-510C

1. Method 1:
2. Turn on the player (without a disc inserted)
3. Press 7, 7, 0

1. Method 2:
2. Turn on the player (without a disc inserted)
3. Press 7, 7, PLAY
4. Select region (0 = multi-region)
5. Press SETUP

1. Method 3:
2. Open the disc tray
3. Press 3, 8, 0, 0
4. Select RC (0=codefree)
5. Press SETUP
6. Close the disc tray

Possibly the the eject switch is stuck, open the case carefuly check and rectify.

I'm guessing you mean that the player won't open so you can take out the cd and turn it upside up. This method will work even with the CD player's power off.
Get yourself a paper clip, regular size, not a large one. Straighten out one end of it so it sticks out straight.
Get a bright light and look at the front of the CD player carefully. You will see a tiny hole just the right size for your straightened-out paperclip to fit. Stick the straight end into the hole and press. The CD tray should slide out, allowing you to turn the CD over. Hope this helps

Hold down the play button, it will take a bit but it turns of the child lock

Most DVD players come with an emergency eject option. First turn the player of for a while and then try ejecting again. If it still doesn't eject press and hold the eject button for 5-10 seconds. This will force the eject motor for about 5 seconds. If everything fails your Player's CD tray assembly (could be a faulty motor or the plastic support on which the tray slides is worn out). You will need to get the tray assembly replaced.

Let me know if you need more help.
Sai.

take the top cover off and have a look at the dvd,which has probably come off the tray. it is jammed for some reason

Just contacted manufacturer with same problem.....your unit needs to be updated....check website...can be done with flash drive or burn a cd

It can be repaired but in all of my years in consumer repair, I dread the CD/DVD tray alignments the worst.

There are many things involved in getting them to operate without fail. Using the mfgs documentation you can get them up and running but most of the time they failed because something is amiss to begin with. So you spend an hour getting everything setup and it will work once or twice but them fail. Only to find out that a location sensor is bad or a gear is missing a tooth....

I had the same problem. I opened up the unit and gently released the tray from inside. It has been working fine since - except for the problem I just posted i.e. the remote does not work.