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Re: help for my dvd
If this unit had worked in the past and has started acting up without being droped, jarred, banged, or slammed around, then it may very well be as easy as dirty optics. Get a lens cleaner kit or a Q-tip with a little glass cleaner and clean off the lens of the optical transport.
If this does not work:
You will need to see what the optical transport is doing. The door needs to be opened and the switch that tells the player the door is closed needs to be tripped (usually with a paper-clip or small tool). Watch the optical transport to make sure it moves back and forth, up and down BUT DO NOT LOOK INTO THE LENS DIRECTLY as this can cause retinal damage. If it does all these things, then the motors are working properly and the issue is eother in the optical alignment or the decoder chip.
If it's the optical alignment, you might be able to open the player and start changing the height of the drive placement so the laser focuses more accurately on the disc. This will require a disc with an opaque or printed side to stay in the drive while you calibrate. You can then safely look at the disc and see the red dot of the laser to determine the size of the dot. The smaller the size, the more in focus the laser is. This calibration must be done for the entire length of the oprical transport track. there are two screws that change this on either end and both muse be checked and calibrated. The optical transport has some focus adjustment capability (hence the up and down motion of the optics), but if the transport is beyond the limited capabilities of the auto focus, it needs to be brought back to correct.
If it's th decode chip, best look into a new player. You won't be able to fix that.
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This could be because of a damaged lens , where the dvd player tries to recognize the disc but is unable to do so and then either sends the disc back i.e. the tray opens up or the message no disc loaded is displayed.
I suggest you to :-
Clean the lens with a lens cleaner available in the market and load any disc in the player to check if it's working fine.
Get the lens replaced from the market and the problem should be solved.
Clean the lens with a dvd cleaning kit. It should solve the problem. If you load the disc and you don't hear the disc whirling, it means that the motor is not spinning thus, the player will not identify any disc. It is time to have the dvd lens repaired or replaced.
If there is nothing on the disc, it will read, "no disc". It will only read and/or identify discs with media loaded or burned onto it. Your unit is a player, not a DVD+R (recorder). Can record VHS, but not discs.
Simply, some DVD players just will not play certain discs. Especially copies of discs. If your having trouble with a movie that is made for release, ya know, one you buy at a store.....then make sure the disc is clean, no scratches, and loaded correctly. Also, maybe buy a disc cleaner disc for cd/dvd players. Lastly, remove any discs, turn off the dvd player, unplug it for a minute, plug it back in, turn on and load a disc. Hope this helps.
If you are loading a store bought DVD and that it what it say's. The transport needs to be replaced. roughly 150-200. If you are loading "burned" DVD's the format may be wrong and the unit cannot read it. Best suggestion I can give you is to first buy a "Laser Lens Cleaner" on that uses fluid. Any electronics store sells them for 15-20. Run it thru the unit a couple of times then try a clean, store bought DVD. If it plays, problem solved. With your DVD's, if you have any liquid car polish like mother's or meguiars, put a couple drops on the disc and spread around with your finger, let it set a couple then buff off with a microfiber towel. This works wonders for old scratched cd's and dvd's and helps protect new ones from getting scratched. As for the Lens cleaner, run it thru every product you have that uses discs 3 or 4 times a year, it's the best preventative maintance and only maintanance you can do on a CD player DVD or PC. Hope this helps
well..I ve heard this problem many times..a DVD player says "no disc" or "invalid disc" only if the disc that you have inserted is damaged or else the DVD reading lens has been damaged when you dropped your player..! That maybe the problem..I suggest it is better to show it in some shop ! or to the authorized dealer itself for better results..ok
Is it a pirated dvd? If it is, do you know some dvd players won't read pirated dvds? And if it isn't, then your dvd player may be dirty (the lens). For that you would have to buy a cleaning disk. You can get one at Radioshack. Or maybe what type of dvd type is it? Is it dvd-r, dvd-rw, or what? Some dvd players have trouble reading dvd-rw sometimes.