After fixing the header mechanism of my LD I tried to play a DVD disc on it. But when I put the disc in the plate and push the buttom "Play", the player goes to "sleep" position: the header goes back, until the end of the guide and stays there for ever. It make nothing!. Only moving the header with my fingers to the central position and turns on the player, the player starts to functioning again. I tried a lot of DVDs disc and with all of them happen the same. Does anybody knows what happen? Maybe my LD needs a firmware update? or is another problem?
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Have you tried cold starting it; disconnect it completely from the mains for ~10 mins, then reconnect and try again.
It is probably a problem with the EPROM or the CPU. You could try resetting the software by holding in the STOP button while turning on the power to the unit. If that doesn't work it sounds like the EPROM is corrupt or the CPU is bad.
how long have you been using this player? I suspect the laser (lens) of
the player. I think the laser (lens) is weak that's why it cannot read
data/files on DVD discs.
To confirm if actually its a laser problem, insert an Audio CD into the
player and see if will play. If it plays, then obviously, your laser
(lens) is weak. But if it doesn't play Audio CD, then it might still be
the laser (lens) or a mechanism problem.
Get a lens cleaner, use it to clean the lens. If that doesn't solve the
problem, get a screw driver, open the player's cover so that you can
gain access to the lens, use a cotton board to clean the surface of the
lens. This should clean dust or dirt that might be on the lens.
If non of the above solves the problem, then know that you need to replace the laser to a brand new one.
To replace the lens, remove the bad laser, use it as a sample to get
exactly the same type and do the replacement. Note that replacing a
laser (lens) needs a professional touch, so if you cannot replace the
laser, get it to a repairman to fix it for you.
Once this us done, your player will play all DVD discs again.
There isn't a way to open it by hand without removing the cover.
As for fixing the tray, there might be a few reasons why its not working. When you press one of the eject buttons, do you hear the usual whirring of motors? If you do and the tray still does not open, then the problem may be a broken rubber belt near the front.
If you don't hear the whirring of motors, then try playing the disk. If the disk does not play either, then the disk loading mechanism is out of sync and may require manually resetting it. This is accomplished by carefully pulling the spring loaded carriage upwards or downwards until it responds to the play button. Be very careful not to touch any of the exposed electrical components and capacitors, electrical shock may occur.
This solution should help or at least decrease the occurances. It has worked for me. The problem seems to be that the original manufacturer lubrication on the glide rails and on the glide track has lost it's viscosity causing the Laser Pick-up Head gliding process to bind causing video to repeat at any random binding point. Open the top cover and play a Laser Disc. Manually change from Side "A" to Side "B". Observe how the Laser Pick-up Head glides on the track and on the glide rail. Stop play mode and remove the Laser Disc. With the tray open, unplug the power at the power electrical cord. Now with the power removed and the tray left open, take a "Q-Tip"™ and spray some ""WD-40"™ on the "Q-Tip"™. Now gently tap the saturated "Q-Tip"™ along the full length of both the upper and bottom glide rails as well as the glide tracks. Repeat this process. Be careful not to touch or lube the Laser Pick-up Head with the "Q-Tip"™. If you do touch the Laser Pick-up Head, just gently clean it with another "Q-Tip"™ saturated with alcohol. When finished, reconnect the power and play a Laser Disc. Manually change From "SIDE "A" to SIDE "B" about three times to spread the "WD-40"™ evenly and ease the gliding process. This solution should help.
It could be electrical or mechanical. Without checking there is no way to be sure. You can get the service manual for your model for 10.00 at the following link. That should get the problem taken care off. http://www.electronicsrepair.net/dvd9.shtml
possibly what hass happened is that your disk has got wedged, (or that someone tried to insert more than 1 disk)
try GENTLY shaking the unit (unplugged) to see if the disk mechanism frees itself.
as it is NEW you really shouldn't do any more than this as it would invalidate the warranty, take it back to the shop you got it from and they should handle it for you, Tell them not to forget that you have a disk in the drive.