Question about Technics SL-PG480A CD Player

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SL-PG380A My cd-player SL-PG380A is showing "no disk". It has only been used about 20-30 times. I've tryed to change the disk, cleaning and so on. It has been storaged for half a year in a place with temp. around 10 to 16 degrees... what can be wrong, and what would it take to fix??? miabm@mail.dk

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  • paolob68 Oct 05, 2008

    I bought a CD-player SL-PG380A as a part of a stereo system more than 10 years ago.

    It has always worked very well and last year I re-packed the CD-player due to some works in my house and kept it in the cellar.

    Few weeks ago I restored the stereo system but the CD-player show, when inserting a CD, the message "no disc".

    Do someone know what could be the reason?

    Thank you

  • umesh63 Dec 10, 2008

    ''No CD'' on Display

  • Anonymous Dec 21, 2008

    Had the same problem for some time. Took it to my local repairer who quoted £85 to fit a new laser assy from Phillips.

    Its going in the bin.

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I know it's late but i happen to have received the same unit for free, and it had the same problem. The reason for the message is that the laser weakens over time and cannot reach the CD anymore. If you try holding a disc directly above the lens, to the back of the spindle, you will see the motor starting to spin. That means the laser is still working but too weak to reach to the height of the spindle. The solution is simple. Take the drive unit out and remove the three screws on the board at the back of the drive. Carefully lift that board, there is a flex cable connected to it you don't want to break. You will see a little variable resistor with three pins. Measure the single pin against both of the other two. One should read 3.something kOhms, the other 1.something. Mine read 1.35. Using a small screwdriver turn the resistor to the right until the side that read 1.35 reads something around 700 ohms. I left mine at 740 and it works fine. Put the drive back together and load a disc. It should now work again. Don't set it any lower than 400 or you will damage the laser. If it doesn't work with 800-400, the laser is probably damaged and the drive needs to be replaced entirely, which is not worth it.

Posted on Jun 14, 2009

  • Jose Lourenco Sep 30, 2012

    Many thanks. I have a Technics SL-PG480A CD Player and found this problem too. I had it stored for long and when I reused it, I got the "no disc" message. I disassembled it and followed your instructions... Now it is playing in my living room again! :-) One remark, tough, mine had a 3 KOhm micropotenciometer, wich gave 1.4 KOhm to one terminal and 1.6 KOhm to the other. I tried setting 700 Ohm to the first and it still didn't work. Then I set 700 Ohm to the other and the CD Player came back to life! :-)

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A slight addendum to the above solution:

The variable transistor in my cd player (SL-PG580A) was labeled with S and E, instead of Ohms.
Imagine the variable transistor is the face of a clock. S is the 1 o'clock, and E is 5 o'clock. My transistor was set at E or 5 o'clock, and I turned it to 6 o'clock.

After that I could play cds again. Hooray!

Posted on Oct 07, 2009

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Don't dismiss the spindle motor being faulty as this is very common on these philips drive units. laser failure is also common on these but i've found that 80% of cd players i've repaired with this drive unit e.g. marantz, philips, cyrus, technics etc has had spindle motor failure. take the lid off and insert a disc, if it doesn't spin but you can hear the laser trying to read, then it's most definately the spindle motor.

Posted on Dec 20, 2009

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Be careful. The unit will attempt to verify that a disc is present BEFORE it tries to spinb the disk. If the optics are defective, this can happen. First try cleaning the lens using a cotton swab and alcohol. Try to play a clean disc. If it fails to play or read the TOC, then the optics need to be replaced.

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When your CD does not read any disk, and returns error, that is usually because of a problem with the optical laser lens that is dirty, faulty or opaque, or a faulty spindle motor unit.

If it is a lens problem, then you will hear disk spinning, whirring and clicking, but the TOC (table of content track at start of CD/DVD will not be read, therefore the error.

Whe this problem is starting you may be able to read only few CD, DVD. After more prolonged usage , the unit will start losing the rest of functions, and ends up not reading anything at all, and returning error.

If instead there is no noise, and disk does not spin at all , then there is a faulty motor, or the motor micro-switch is bad. This situation is far less common than the lens problem.

Try first using a CD/DVD cleaner disk to clean the lens. If that does not work you will need to disassemble the player , and clean lens directly with q tips and isopropyl alcohol, or to replace the lens, or the whole drive unit.

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If thhis happens quite often , and does not depend on the media, then it is usually a dirty lens problem. The lens is dirty or scratched and sometimes cannot read CD TOC (table of content).

If this happens only on reocrded CDs , try changing the media used. For example if you used +R, try with -R.

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Try first using a CD cleaner disk, if that does not work, then you will need to take the apart the unit to clean lens with isopropyil alcohol and cotton sticks.

See also the following websites on how to clean the lens, use a cleaner disk first:



Gizmo Highway DIY - Clean your CD player lens


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Mar 25, 2008 | Technics SL-PG350 CD Player

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Technics SL PJ27


First I think you should turn your player on and wait 5 - 40 minutes before before you start liste3ning music.
because electrolytic capasitors may be little broken and those can repair themselves but it takes a while.

Good rule of thumb is that If you don't use every day an old device
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turn power on and wait.


Second try to play music cd which don't have any scratches and without any copyprotections

Third Disconnect power cable

Then open device and try to clean all dust.

Look for hairs and other difficult to see objects uselly
you find at least one hair inside old cd player.
If hair is around disk spindle it maybe difficult to
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Check that cd-disk makes good contact so remove even tiniest dust and hairs
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Lubricate every moving part with lithiumgreese don't make any mess.

This last fix is for most desperate ones.
Connect the power cable and push eject and be carefull because
you can get fatal electric shock.
Disconect power cable. You can use extension cord which have on/off powerswitch.
You can see six tiny trim pots.
First take photo of those pots so you can undo all changes.

Change only one pot and only about 1/8 of turn. Turn power on and test if you make it worst or better.
If you think you fixed the problem that is not the case ... yet.
Then you have to make finall test and play a lot of music cd:s and after that you have fixed the problem.

Make notes which cd:s and what track your player don't play properly and use those
cd:s to testing those trimpot changes.





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