technics stack unit

does anybody have the knowledge to be able to repair my technics dvd player.it keeps telling me no disc and that includes the head cleaner cd. if anybody can take a look please pm me.

How to Clean a DVD Player


Things You'll Need:

• 
  Air Duster
  
• 
  Cleaning Disc
  
• 
  Q-Tips
  
• 
  Rubbing Alcohol
  
• 
  Screw Driver
  
• 
  3 in 1 Oil
  

1. 
   Step 1
   
   
   First
   you will want to start by, unplugging your DVD player from the wall and
   tv, and move it to a more suitable working environment, like a table or
   desk.
   
2. 
   Step 2
   
   
   Examine
   the outside of the DVD player, around the vents for the cooling fans,
   and look for any excessive dust build up, if the vent area seems to
   have a small quilt of dust on it, it has been way to long since you
   cleaned! You dont want to blow this dust with the air duster, as it
   will spread back into the DVD player, however, if your dust build up is
   light, you can begin by blowing through the machine. If you open the
   drawer, on some models this will allow you to blow all the way through
   the DVD player.
   
3. 
   Step 3
   
   
   Next,
   you can put your cleaning disc in and relax as it plays through,
   however, if you had the "Quilt 'O Dust" mentioned above, your dvd
   player is most likely still not playing correctly. If the cleaning disc
   played through, you can stop here, if you had the quilt of dust, you
   will need to do a bit more thorough of a cleaning, continue to the next
   step if this is your case, otherwise.. go watch a movie!
   
4. 
   Step 4
   
   
   Ok,
   now for the fun part, and a crash course in electronics. We will now
   disassemble your dvd player for a good clean. First looks around the
   seams of the dvd player for the screw holes, and for security tape.
   (There should be a piece of tape on the dvd player that would break if
   the dvd player's case is opened, this will VOID YOUR WARRANTY, continue
   only if you could care less about your warranty or its expired) Now
   once you have made your decision to open it up anyways... remove the
   screws on the bottom side, so that you are removing only the outer
   casing of the DVD player. Now that you see all the insides of the dvd
   player, start removing the heavy dust collections around your vents by
   hand, after you have completed this, you can go over all of the insides
   with the air duster, just be sure not to tilt, shake, or hold the can
   upside down, the liquid nitrogen that comes out can damage your
   electronics and your skin!
   
5. 
   Step 5
   
   
   Once
   you have the inside blown down, you can get your rubbing alcohol and a
   q-tip, dip your q-tip in the alcohol, and use this to wipe down the
   laser, you can also use the alcohol on the rails that the laser is
   guided on if there is dust here as well, do not use the alcohol on any
   of the circuits, or the boards they are on, just the laser, the rails
   it rides on, and if it has small belts on it, you can clean them and
   around them with the alcohol.
   
6. 
   Step 6
   
   
   Once
   this is wiped down, and you have let it dry (wont take but a minute)
   get your 3-1 oil, and dip another qtip in it, and lightly brush some on
   the rails the laser rides on for a smoother move, this may even make
   your dvd player run a bit quieter, you can also use this on any gears
   you may see that are attached to belts. Make sure not to get any on or
   around the laser, or on any of the circuit boards, be very careful.
   
7. 
   Step 7
   
   
   Once
   you have done all of this, you can begin to put your DVD player back
   together, once its together, you can run the cleaning disc, however,
   this probably isnt necessary, as you just cleaned the laser with
   alcohol. Your DVD player should now be restored to practically new!
   

Tips & Warnings

• Be careful and patient when working inside of the dvd player
  
• Occasionally blow through your dvd player with the air duster later on to keep dust from accumulating
  
• Watch your electronics
  
• Remember
  if you open the case, you are most likely voiding the warranty, make
  sure "self-clean" is something you want to do before opening(most
  likely run you about 50-100 US$ to have one "professionally" cleaned in
  a shop)
  
• Make sure you unplug the DVD player before you start opening it
  

thank you alpbach 1 will have a go tomorrow

Please tell me if it works, if not the laser will probably need to be replaced, which is not so hard to do yourself and not very expensive if ordered online.

i gave it a try but silly me forgot to leave the drawer open before unplugging.did the fridge freezer instead.there was loads of dust in the back of that lol.

just to let you know i had another go at this today.the dvd player is once again fully functioning.thank you alpbach1 xxxxxxxxx

Your Welcome.................... :party3: