Question about Panasonic SC-HT720 System

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Cd not playing

When i insert the cd the disk is not picking up into the sleeve or chamber.I did purchase a disc to clean it but still does not work.

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Re: cd not playing

You need to take to the repair shop it needs service on the pick up laser and sensors

Posted on Nov 17, 2008

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I have a zenith model zhd311 home theater system that is installed in my camper that is not functioning properly..the am/fm part is fine, it will play a music cd but, when i insert a dvd, it comes back...

yes unfortunately your laser isnt reading for 1 of 3 reasons, dirty fingerprints etc on the disc, the laser is dirty,dusty or the laser is weak..clean the disc and or laser if still ng the laser is defective

Aug 31, 2010 | Zenith ZHD-311 300W Complete Home Theater...

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If this problem occurs only at this cd/dvd it's a disk problem. If it occurs on various disks try using a cd/dvd cleaner set, a wet one is better. Follow the instructions on the set. The main idea is to put one drip of the included liquid at the set (usually isopropyl alchohol) at a specific place (like small brush) on the disk surface and play this disk. This way the "brush" will clean up the laser lens and after that the cd/dvd player will be able to read the disks. BE CAREFULL not to put too much liquid on the "brush". In case you can, use a Q-tip with isopropylic alchool to clean up the cd lens manually. In case this don't solve your problem, the cd player needs laser lens replacement by a technician.

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May 09, 2010 | Sherwood VR-652 Theater System

2 Answers

"No Disk" message

Your dvd lense need cleaning .
For that buy lense cleaner disk from nearest computer shop then put that disk into cd/dvd rom then play it then it clean dust from lense then you can use it again .
But if still same issue then you need to replace your dvd lense .
Let me know if you need further assistance.
Thanks for using FixYa.

Feb 24, 2010 | Sony Bravia DAV-HDX265 Theater System

2 Answers

Dvd disc not reading

Is it just that disk or are all the discs not reading?? If it is just that disc try cleaning the disc with a lint free soft towel. Also is the disc a factory dvd or a burnt copy of media. Some dvd players will not play certain re-write discs some play DVD-R and some play DVD+R and some will play both ... good luck

Oct 19, 2009 | Home Theater Systems

2 Answers

Ht-x30 samsung cinema system display unknown disc

TThe player does not play this type of dvd disk! only pre-recorded movies and CDs Try hooking Up a player that plays DVD+ and DVD- disks!Hope I was of help!
(please use The ratings to keep this site free!)

Dec 14, 2008 | Samsung HT-X40 System

1 Answer


I wonder whether your system stood around gathering dust for a while when you were looking for a new cable and that you now have dust on the lense. That could explain the inability to play DVDs and perhaps the noise also.

Could I suggest that you try a lens-cleaning CD, or if you can get at the lens, you could try cleaning it with rubbing alcohol (iso-propyl alcohol) or meths on a cotton-bud.

Chewing the cable could always have shorted something and blown a fuse, or worse, but these don't sound like those types of faults to me.

Sep 23, 2008 | Samsung HTP-1200 System

1 Answer

Wont play cd

I would suggest trying some sort of laser cleaning device. You can pick one up at Target or Wal*Mart. How it works is there are a few small brushes on what looks like a normal CD. When you insert this into your CD player, the brushes run over the laser head and remove dust and other particles from it. This can help when discs are unreadable, or if there is static while trying to play a disc. Hope this helps!

Sep 07, 2007 | RCA RTDVD1 System

2 Answers

No Disc

Stumpy, I think the first step could be to find out between the DVD player and the disc which one has a problem.If the DVD Player is able to play other discs then it is possible the problem is with the disc only. If that disc can be played quite alright in other DVD players then the problem is with your DVD Player. I suggest you trial that first. I think the indication of " No disc insert disc" could be that your DVD Player is failing to load or read the disc either because the disc has some scratches or because your DVD Player lens are not powerful enough. I am, Letsthank.

Jan 29, 2007 | Sony DAV-S400 System

1 Answer

DVDs & CDs will not play

If you are playing STANDARD CD or regular DVD that you have purchase and you are having this problem,your dvd player is malfunction;however,if you are playing DVD burner disc or a different dvd region disc(we are region 1 in U.S.) that is no going to work.Same thing for your CD burner disc,it might not work.
If you are using a rental dvd disc,check and see if there is scratches?If so,try to get one without that many scratches!

Jan 07, 2007 | Philips DVD Micro Theater Shelf System...

1 Answer

DVD won't play

Is this happens on every disc? The NO PLAY message appears when "The disc that this unit cannot play is loaded (from the user guide)". Maybe it's something to do with the DVD region? If you sure that the system supports the disc's format.. And it won't play other discs... try to clean the CD lens. CD lens cleaning discs: Every CD, stereo equipment, department, discount, store - and even sidewalk venders - carries CD lens cleaning discs. Are they of any value? Can they cause damage? I generally don't consider CD lens cleaning discs to be of much value for preventive maintenance since they may just move the crud around. However, for pure non-greasy dust (no tobacco smoke and no cooking grease), they may not hurt and could even do a good enough job to put off a proper cleaning for a while longer. However, it's also possible they will ruin the lens. Consider that the worst thing to do to a precision optical surface is to wipe it with a dry cloth as this is likely to scratch the surface as it rubs the dust over it. To the lens, a speck of dust is like a boulder. Once the lens is scratched, replacement of the entire optical pickup is the only remedy. And, since there are absolutely no sorts of standards for these things, it is possible for a really poorly designed cleaning disc to damage the lens even if the dust itself is non-abrasive. In addition, if the cleaning disc doesn't look like a CD to the optical pickup or disc-in sensor, the lens it may not even spin. So, the drawer closes, the drawer opens, and NOTHING has been accomplished! (But at least no damage will be done.) As if this isn't enough, NEVER put one into a high-X CDROM (DVD player or DVDROM drive). The high speed rotation may cause the cleaning disc and/or player/drive to self destruct. And, don't try a cleaning disc on an automotive CD player that sucks in the disk - it will get stuck.

Dec 18, 2005 | Yamaha DVX-S100 System

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