Question about Koss KS4101 System

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Dvd I have a dvd player that has been working well for a while. However, now it says no disc, whenever i try to play one, this happens with all discs dvds, and cds, even when they have no stickers or anything on them. How do I fix this?

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Re: dvd

There is a flat strip that leads from the body of the laser lens to the circuit board take it off and replace it that could be your problem.if that does not solve your problem then have a tech look at it to replace the laser can order the strip from good luck, your machine can give more life if you are prepare to invest money into it.

Posted on Mar 23, 2007

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Re: dvd

Replace the laser sounds like the laser has gone defective. There is no real fix except replacement of the laser. it might be better to replace the machine all together for it would be cheaper

Posted on Mar 23, 2007

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Why does it keep on displaying 'disc error' whenever I insert a disc?

Hi Rhea
You'll want to narrow down what is the problem.
  1. Look at the disc. Is it a nice clean, unmarred surface, or does it look like it's been used as a coaster in a tough bar. Especially with Blue ray, systems can be picky about the disk media, and just punt if they have too many read errors while trying to get to the menu screens. In that case, try using another good-condition disc and see if it works now.
  2. Is it a commercial disc, or a home-burned one. There are ongoing issues in any Blu-ray or DVD players about what media types are or are not recognized. Most commercial media should be fine. If it's home media, verify that commercial media will work. Then you may want to see if you can update the firmware on the player. A lot of them now hook right into your wireless, or ethernet, but often need to be told to look for firmware updates. Your manual will have the particulars. Alternatively, you can usually download the firmware to a thumb drive and then plug it into the USB port and trigger the update. Sometimes firmware updates will include newer lists of accepted media brands.
  3. Does the disc play OK anywhere else? If your laptop or older player play the disc ok, then it may be the player.
  4. Is the disc domestic. If the disc is from another region, it may be encoded differently than the player is set up for. You'll need to consider whether to possibly burn an unlocked copy of the disc (stay legal, please), or view the disc on a region-free player.
  5. Has the player ever been cleaned? You can build up dust bunnies over time in these players from not perfectly clean discs going in and out. You can get a commercial CD/DVD cleaner disc fairly inexpensively and run it through in case the lens is dirty. A modest puff of compressed clean air into the slot may also clean things off a bit.
  6. If you've done all this and it's still not responding, then you may need deeper diagnostics on the player. Look up your model number in a search engine along with 'won't play disc' and you'll likely find all sorts of forum threads about tracking down the error.

    Good Luck!

Nov 24, 2015 | Samsung Home Theater Systems

1 Answer

Keeps reading no disc

discs can be faulty and lasers can be lazy try another dvd play and try another disc. if you can get a disc to play then try the the one that failed again straight after. persistent problems of this nature usually mean its time to buy a new dvd player

Dec 02, 2011 | LG HT503TH Theater System

2 Answers

I have made several attempts to play a disc on my JVC TH-V70. IT reads 'reading' on the dvd unit then after a few second the disc ejects. Why is this happening?

Hi Adrienne - If it only happens to the one DVD it is most likely a problem with the DVD being damaged or dirty.

If it's happening with all your DVDs your player laser lens is probably dirty or it might be damaged. If no discs are being read get yourself a CD/DVD cleaning disc and run it a couple of times (following the directions). Of this doesn't work you will have to decide if the player is worth the price of a repair (unless it's still under warranty). Most aren't as you can buy decent players for less than $50. Any repair will cost at least that.

If it is the one disc I suggest you take a clean soft cloth and wet it slightly with plain water and the give it a few strokes across the disc (not in circles), let it try dry for a few minutes and try it again. Also examine the disc (bottom) for any obvious scratches or stuck on gunk.

Good Luck and thanks for using Fix Ya.


Apr 28, 2011 | JVC TH-V70 System

2 Answers

LG Blu Ray Player Disc Error for most Normal DVDs

Perhaps you may need to use a lazer cleaner in your blue ray player

Sep 18, 2009 | LG LXD5230 System

1 Answer

It wont play dvds!!! Help!!! Panasonic SC-HT520

You can try a CD/DVD Cleaner Disk ($3-$5). Some sell for $15, don't know if you'll get better results. If it doesn't work, then you have a laser alignment issue that needs calibrating. The labor is likely to cost more than a new DVD player.

Dec 28, 2008 | Panasonic SC-HT520 System

1 Answer

Program play prohibited

This can happen if you have the "repeat" function turned on on your DVD player.

Nov 10, 2008 | Sony DAV-C450 System

1 Answer



Jan 15, 2008 | Panasonic SC-HT800V System

1 Answer

DVD pLayer Not spinning DVD's

if your dvd player is 5 years old or more i suggest you trash it and get a new one but if its not try to clean the lens manually with a peace of bond paper. rub the paper gently on the surface of the lens

Jul 13, 2007 | Sanyo DWM-3500 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...

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