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I had this problem when trying to play Avatar and my player locked up. I'll assume you have a disk inside when this happens.
Try pressing the power button to turn it off, then turn it back on again but as it starts press the Open/Close button - you may have to do it twice because at the first press my BDP1500 says "CLOSE" then a second quick press will show "OPEN". Take the disk out, then try another disk. If it's a problem with trying to play a recent disk you should be ok until you try to play it again. Read up on updating your firmware, etc. Good luck.
you can try manually cleaning the laser lens ( gently wipe , do not press down hard , it is suspended by fine wires ) using a q-tip and a drop of that cleaning solution you got with the laser lens disc. ( fluff another q-tip a little ) then dry wipe it with another q-tip and try a disc.
you can look at the laser lens and see if you see the laser come on also to determine if that is working ( do not look directly into the laser ! )
if the laser works but it still does not read discs after cleaning it manually , then there is a problem with the focus coil on the laser or the signal board is bad
I work for Coby technical support. Our customer service phone number is 1-800-727-3592.
the unit is showing "invalid disk" on every disk that you try to play,
unfortunately, the unit has developed a defect and needs to be
replaced. Our warranty is 90 days from the date of purchase. If you've
had the player longer than 90 days, I regret to inform you it is out of
If you feel this solution doesn't deserve a good
rating, please let me know why so that I may better assist you. If
there is anything more I can do to help, I will!
You probably need to reset your DVD/VCR/Combo. Go to www.samsung.com. Go to <Support>. In the search box, type in the model of your DVD/VCR/Combo. Or type in, >how to reset DVD/VCR/Combo<. Each model has different reset method and there are hundreds of models!
853. How To Reset Your Samsung DVD Player
STEP 1. DVD Reset List Samsung DVD
players have a built-in reset procedure that resets the DVD player to the
factory defaults. You can use the reset procedure to reset settings that
don’t work with your TV or to resolve issues such as unit lock up. To run the
reset procedure, you press one or more buttons on the front of the DVD player
and hold them for at least fifteen seconds. The buttons your press depend on
the model you have. Important: For the reset
procedure to work, you must press the buttons on the front of the player, not
on the remote control for the player. Below is a list
of all Samsung DVD players and the buttons to press to run the reset
procedure. DVD511 - Stop
/ Play DVD611 - Stop
/ Play DVD709 - Stop
Many, many other models follow but cannot be listed here because of this site's text limitations.
My Smasung DVD/VCR Combo stopped reading DVDs because of a dirty read head. It started by only playing disks sometimes, and progressed to never playing disks. I assumed it was a dirty laser lens so I bought a lens cleaner set. Unfortunately my player wouldn't play the cleaner disk.
So I took it apart and cleaned the laser lens manually with some isopropyl alcohol (the clenser that came with my cleaning disk), and a lens cloth (that came with my glasses). Just open the case (starting with the screws in the back) and remove the snap in cross panel that obscures the lens of the DVD portion. Put a drop of cleanser on the lens and gently wipe it with the cloth.
Oh and by the way, I take no responsibility if you break your own player while following my instructions. My own DVD player was far out of warranty at the time I cracked it open.