Question about Philips DCP750

5 Answers

DISK WILL NOT SPIN

THE DEVICE POWERS ON BUT THE DISK WILL NOT SPIN. disk wont spin but power is on and it says no disk, when the disk is inserted

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  • saddam sharif Jul 17, 2008

    what ever the cd sits on does not spin

  • saddam sharif Jul 17, 2008

    the plastic thing that it sits on does not let it spin, and the moter does work

  • saddam sharif Jul 17, 2008

    i need a new plastic thing so the cd can sit on because my motor still works

  • saddam sharif Jul 17, 2008

    the disk drive does not work ok

  • saddam sharif Jul 17, 2008

    i brought itin december 07

  • saddam sharif Jul 17, 2008

    but i bought it online from the website ebay i dont no how this warrant works and i cant contact the him or seller

  • saddam sharif Jul 17, 2008

    thank u for ur time

    much appreciation

×

5 Answers

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  • Master
  • 2,071 Answers

The problem is in Slider mechanism,that can't switch on the Servo control circuit, that's stock up ,due to accumulated dust and dirt that's hardened the grease,it's need to clean and change the old grease. First thing you want to see if the unit’s laser is in good working order. This method isn’t foolproof, but most of the time works admirably. When you insert a disc, see if you can look up underneath where the disc sits on the turntable. Observe the laser lens going up and down. If the lens is trying to focus, that’s good! After a few seconds of the lens trying to focus, the platter should start to spin. On almost every CD/DVD unit I've encountered, the unit won't spin unless the laser has properly focused on the surface of the disc.
f the unit spins up and and then shuts down, you should check and make sure the laser pick-up assembly slider mechanism is working without any obstructions and that the small chrome rail that it slides on is slightly greased. Don’t go overboard with the grease though, as too much can cause all sorts of problems.
The slider mechanism, depending on the age of the unit and the manufacturer, consists of the small chrome rail, a drive motor, a small gear assembly, and (in some units) a small belt that drives the slider unit via the motor. This small belt causes all sorts of problems. If the belt is broken or slipping, it can cause skipping, dropouts, or simply no start up at all. Also, if the belt breaks in the middle of the disc, the drive mechanism gets hair or dirt wrapped up into the gears, or the pick-up assembly doesn’t return to the start position (called home), the unit will (99% of the time) refuse to release the disc, causing it to become stuck inside the unit. There’s a little micro or leaf type switch located at home position that sometimes gets dirty or breaks and, causing this problem also.
If the disc starts to spin slowly and doesn’t come up to speed, the spindle motor that’s attached to the turntable platter is a common problem. There could also be a problem with the spindle motor driver controller IC or the power supply regulator that supplies voltage to the driver IC. If the disc starts to spin and then spins really fast, or stops and starts to spin backwards, your problem is the laser pick-up assembly or the servo control circuit.
Also, in a DVD/CD player there are many complaints where the disc gets stuck inside of the unit. This could be as described earlier, but there’s also what’s called a drawer/disc tray opener and closer mechanism to contend with. On many models, old and new alike, there’s a small belt that goes bad and wont let the tray open. You can usually put your ear very close to the front of the unit and, if this is happening, hear the motor spinning when you press the eject button. Another cause is the nylon gears, which can get jammed up with dirt and dust. Also, in other cases, you could have a motor problem, or the driver IC could be at fault. If you suspect that the motor is at fault, simply measure the voltage on the tray motor while pressing on the eject button. If the voltage comes up between 6 to 12 volts, depending on the manufacturer, then the motor needs to be replaced

Posted on Jul 17, 2008

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  • Master
  • 3,422 Answers

HI,

see if the player tries to read the disc. Load a disc and listen.
Does the player make squealing noises or is it totally quiet? Squealing noises may indicate that the player is trying to synchronize with the disc but can't due to an obstruction on the lens or in the laser path inside the pickup or a defect in the pickup. This can also be caused by an intermittent signal problem due to a faulty ribbon cable.

Totally silent means that the photo sensor is not getting any usable input from the laser at all, meaning that the pickup is "blind" for lack of a better word.
This can be caused by an obstruction of the beam by foreign matter on the lens or inside the pickup all the way to a marginal or failed laser diode and/or photosensor array. This can also be caused by a bad ribbon cable with one or more severed traces.

You could try to clean the optics. This is the most common malfunction as far as i know in all disc players. It would involve taking the cover off and finding a way to expose the lense, and then cleaning it with a very gentle brush. some players have a cover for the lense that swings to the side during playing, this greatly reduces the chance of dust accumulating, but its still worth the try.

If you actually see dust on the lense, then its just that simple. clean, close, play.


It may also be worth your while to check on the small shafting that guides the carriage of the laser pickup. Dirt, grome, dust and solidified lubricant can cause stoppage of the carriage and the laser eye then fails to read the next track. Please refer to the image i have attached.

Posted on Jul 17, 2008

  • Priya darshan Jul 17, 2008

    Below is the image:



  • Priya darshan Jul 17, 2008

    Then the only solution is to get it repaired.There are no home remedies.

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  • Master
  • 2,035 Answers

You need to give the player for service if its within warranty you can give to company or you can get it fixed in local service center....





Good luck...

Posted on Jul 17, 2008

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  • Master
  • 2,427 Answers

The disc drive motor need replacing..

Posted on Jul 17, 2008

  • Rishi Roshan Ali Jul 17, 2008

    Sir when you purchase the genuine replacement motor it comes with the plastic thing (disc drive.)..



    The disc drive must be fastened securely to the motor,, what you can do if it sint is stick it with epoxy steel..



    If it is fastened but cant spin the cd its the motor.. But a replacement motor comes with the disc drive or you can just get one from another old cd player at a local electronics shop for free.

  • Rishi Roshan Ali Jul 17, 2008

    Try fastening it with epoxy ,, if that doesnt work get another one, check your local electronics shop they surely have a lot tossed all over the place

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  • Philips Master
  • 13,433 Answers

The motor may be faulty, is the player under warranty? if yes get it warranty repaired if not you need to contact your dealer or philips directly for service. to get the motor replaced. I suppose if you a experienced you could replace the motor yourself, if noting else is wrong.

Posted on Jul 17, 2008

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Posted on Jan 02, 2017

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