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Technics sl-p555 disc won't spin unless helped by hand

Technics sl-p555. when a disc is inserted you can hear the laser trying to read the disc but the disc stays still unless helped along by hand and then it will spin slowly then speed up till it gets to the required speed to actually play the disc then it will work fine until you next change the disc. i've swapped disc mechanisms out of an sl-p777 and an sl-ps70 which are in perfect working order and the problem persists so i know that no part of the mechanism is faulty so i've narrowed the fault down to the main PCB. maybe a power supply fault? any help gratefully received. thanks.

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6ya6ya
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Posted on Jan 02, 2017

techman
  • 3130 Answers

SOURCE: Home theater won't start playing DVD

If a disc will not spin, A- the laser may not be focusing on the disc, as it must do this before it will spin and read the TOC. ( table of contents) B- you could have a fault in the spindle motor circuit or the motor could be bad. You will need to find an authorized servicer if you do not understand solid state repairs. Good Luck PS please dont forget to rate this.

Posted on Oct 14, 2006

techman
  • 3130 Answers

SOURCE: CD won't spin

Im afraid the laser is worn out, or there is a power supply problem, or the spindle motoer servo curcuit is defective. If you know how to service solid state curcuits, maybe it will be worth fixing. Im sorry to say, if you do not, then most likly the repair will exceed the cost of a new unit or come close to it. Good Luck PS please do not forget to rate this thread.

Posted on Oct 17, 2006

joshy999
  • 241 Answers

SOURCE: JVC Model AV-36D502 Blinking power light on start-up

you probably have some sort of overheating or short on the internal board - is it still on warranty? if so they will fix at no charge - if not, a local repair shop should be able to correct the problem but it may cost as much as $150

Posted on Jan 26, 2008

micromaster
  • 3614 Answers

SOURCE: Jvc PCXC50 audio shelf system 1994

hi there,

did the unit was not powering On..?

Posted on May 31, 2008

  • 2 Answers

SOURCE: jvc model 32X576

I have the same problem. I finally convinced JVC's tech support to help me out (they **** by the way) and I got the schematics for all the boards in the unit. From looking at them I believe it is the Digital Signal Board. I will post results soon.

Posted on Oct 04, 2008

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Technics cd changer sl-mc59 says C F 19 it does not read disc


HelloDisc reading is done by the laser pickup assembly. If it has some trouble with it, the lead-in and lead-out signals and other music signals cannot be read from the CD disc we insert into. There are mainly three reasons for this fault. The first one is with dirty laser pickup assembley focussing lens. If the lens has accumulated with dirt or dust, the intensity or laser beam that hits the disc will be weak, and so the reflected beame too. This will lead improper reading of the lead-in signals, and the set will show no-disc after a while. Put a laser head cleaning disc [this disc can be bought from most of the electronic sparepart shops at your town], play it for at least three times, and see whether it helps you.If not, try replacing the flat ribbon plastic cable that connects the laser head assembly to the main board of the player. Actually this is a very skilled work, as you have to dismanle the mechanism out from the set. If these two processes does not help you, repalce the laser pickup assembely with same type and number. OK.

Dec 20, 2011 | Technics Audio Players & Recorders

2 Answers

My dvd player wont read my movies


Hello
Check its Sled Motor. Sled motor is one which get spins the disc we insert into it. If it is faulty, discs won't spin, and the set won't read anu discs, and will show no-disc display. OK.

Dec 12, 2011 | Sanyo DVW-7000 DVD Player/VCR

1 Answer

When loading a dvd it displays, "NO DISK". Is it


Hello
There are mainly three motors for most of the DVD players. One to spin the disc we insert in, other to load the laser pickup unit to-and-fro inside it to read the disc and an other one to load the tray mechanism 'in-out'. According to your description, the disc spins inside, and you can hear its spin. So motor which spins the disc has no trouble at all I should say. Then comes to the second motor that moves the laser assembly inside it. If it do not work, the laser pickup unit won't move and no reading will take place and 'No Disc' display will be the result. The last chance is with Laser Pickup Unit itself. Just get this unit repaired by any well experienced service technician or by the authorised service center, because, there are special tools to open this unit. As it is a compactable one, more care should be given to it while repairing. Suspect the second motor I described earlier, and the Laser Pickup Unit. OK.

Jun 14, 2011 | RCA DRC628 Portable DVD Player

2 Answers

I buy a used technics sl-pg480a cd player and after i inserted a cd, there is "no disc" on display...i try with different cd's (mp3, avi,...) and it's always the same...i have opened a box and...


If it doesn't turn the disc it can't read the data and 'know' from that there is a compatible disc inserted.

You may have gotten hosed by the seller. Until you get it to play with a commercial music CD I wouldn't try anything non-standard or home-grown. It doesn't play anything but CD-A music so MP3 and AVI discs would not be recognized anyway.

Before you dive in and possibly wreck it, read this...



http://www.repairfaq.org/sam/cdfaq.htm

The manual:

http://www2.panasonic.com/consumer-electronics/support/Audio/Technics-Audio-DJ/Technics-CD-Players/model.SL-PG480A

Feb 20, 2011 | Technics SL-PG480A CD Player

1 Answer

System unable to read disc.


Hi,
Try cleaning the lens with an approved laser lens cleaner.
Check to see if you can hear the disc being spun. If not, the spindle motor is bad.If your discs are spinning but aren't being read, your laser could be damaged. Contact Nintendo for service, unless you're comfortable replacing the laser yourself. Buy one online and get it replaced.
Thank you!

May 13, 2010 | Nintendo Wii Console

1 Answer

Disc won't read


Optical failure. Here are some general tips to use.

Try cleaning the lens with an approved laser lens cleaner.

Check to see if you can hear the disc being spun. If not, the spindle motor is bad.

If your discs are spinning but aren't being read, your laser could be damaged. Contact Nintendo for service, unless you're comfortable replacing the laser yourself. Buy one online and get it replaced.

Nov 11, 2009 | Nintendo Wii Console

2 Answers

Is my laser unit needing replaced on my Technics SL-PD667.I load discs and press play but it skips and jumps have tried to clean lasr with a cd cleaner but this has not solved the problem.


Cleaning the laser as you rightly say will not solve your problem. I have a Technics SL-PS700 which although quite ancient by todays standards also had the same problem as yours I have however fixed it using the same principle I apply to DVD recorders, playstations, Xboxes.
The operating frequency of the laser is set to a usable level by the manufacturer and over time the power tends to reduce. Other than replacing the laser unit which can be expensive, an adjustment to the laser needs to be done.
I'd recommend you get hold of a service manual first but it may not be necessary. If you are happy to get your hands dirty and are confident enought ot open the player, You'll need to get to the underside of the laser unit which normally means the whole CD tray mechanism needs to removed.
Not as scary as it may sound as long as you A - make notes of how it all comes apart by writing down the disassembly steps or/and take photos of the stages.
Underneath the laser unit you should find what looks like a little screw. This is infact a potentiometer this controls the the power of the laser. A pot tool (plastic should be used to make the adjustment but if you are careful a small slotted screw driver will do. Turn the pot one eigth of a turn clockwise this will raise the power slightly. Now test a CD to see if it plays. I don't reassemble until I can get a disc to play Just avoid looking at the laser unless you want to damage your eyes. Normally on turn does the trick and the CD will play once more.
Some say this shortens the life of the laser but that is only true if it is over adjusted. The manufacturer builds in an adjustment factor to enable service engineers to do this. In a workshop environment an engineer would use an oscilloscope to visually check the frequency according to manufacturer guidelines but these lovely pieces of kit are beyond most of us cost wise. If you require more clarity let me know

Oct 23, 2009 | Technics SL-MC7 110-Disc CD Changer

1 Answer

FAILURE TO READ DISCS. TECHNICS SL-DV280 (SC-DV280)


if the disc starts to rotate when helped by hand then you definately have a weak spindle motor. dvds spin faster than cds which gives more wear & tear to the motor. i've repaired these faults numerous times. hope this helps?

May 08, 2009 | Technics SC-DV290 System

3 Answers

Technics sl-pg580A


this player uses a philips mechanism, spindle motor failure is very common on these mechanisms, yours may be on its way out. take the lid off and insert a cd and if you can hear the laser trying to read the cd without it spinning, it's definately the spindle motor.

Oct 07, 2008 | Technics SL-PG480A CD Player

3 Answers

SL-PG380A


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.

Mar 25, 2008 | Technics SL-PG480A CD Player

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