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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  • Anonymous Feb 12, 2008

    no matter what kind of disc I put in the same message comes up (no disc) even cleaning disc

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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 lens.you can order the strip from www.dalbani.com 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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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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1 Answer

Why my dvd wont play on my player


Does that disc work on other players? Do other discs work on your player?

If you tell us more about the player, the disc, and what happens when you try to play the disc, we'll be able to make better guesses about what the problem is. Can you play other discs? Does that disc work in other players?

Not having specifics, here are some ideas, in the order in which they popped into my head:
1) That's a Blu-Ray disc and you have a DVD player.
2) The disc is dirty. Take a wet cloth (or paper towel), put a little dish soap on it, and gently swipe the shiny side of the disc from the center of the disc to the edge (don't wipe the cloth around and around the disc). Rinse the disc with cold water. Wipe with a soap-free wet cloth. Rinse again. Wipe with a dry cloth (or paper towel).
3) The disc is scratched. Some players handle scratched discs better than others. There isn't much you can do here. There are kits that can repair some scratches, but the kits aren't free, and they don't work a lot of the time.
4) You are putting the disc in upside-down. The side with the printing on it has to face up.
5) Your DVD player is dirty. Open the disc tray and blow as hard as you can into the player. Try not to blow any spittle into the player.
6) Your DVD player is broken.
7) Your disc is NTSC (Japan/US) and your player is PAL/SECAM (the rest of the world). Or vice versa.
8) There is some thing about region codes which is some kind of copyright protection scheme that means not all discs will work with all players.
9) Your disc is a CD, not a DVD. (I think most DVD players can play CDs, though.)
10) Your disc is DVD-ROM, meant to be used in a computer.

Mar 02, 2015 | Televison & Video

1 Answer

DVD player automatically stops and turns itself off, how do I prevent this?


Warning: Laser inside! If you want to open it up and troubleshoot, make sure you don't point toward your eyes.
Check the nylon laser carriage to see if it slides laser from center to outside line. If it sticks, it's probably shutting down from not properly reading a disk.

Aug 03, 2014 | Pioneer DV-343 DVD Player

1 Answer

I have a PHILIPS DVP3962. My DVD player used to play where I left off watching my DVDs, but recently, when I turn it off and turn it back on, it starts from the beginning of the DVD. Dose anybody know why...


Resume function is wiped from the player's memory buffer whenever the unit is switched to standby (either with the [POWER] button on the main unit, the remote or turned off at the wall), the disc is removed, or the [STOP] button is pressed twice (either on the front or via the remote).

(The simplest thing you can try is to insert a DVD, play a few minutes of its main title, press [STOP] once, not twice, leave it for 10 minutes, then press [PLAY] - it should resume, and thus continue your movie from where you left off)

Resume is considered 'temporary memory' in DVD devices, and therefore is not intended to store the playback point of the disc permanently whenever power is lost, [STOP] is pressed twice or discs are ejected.

However, this is relatively normal, and is not a fault, but it can be annoying to the user.

Apr 26, 2011 | Philips DVP3962 DVD Player

1 Answer

I used my Pioneer DVD-RAM DVR-112CH for a few years; and I was able to play all my discs without any problems (all are legit). I mainly use AnyDVD to play any of my DVDs. But I had noticed recently that...


Hi, You can try testing the discs on a different player. The problem may be with a scratched disc or damaged disc. The player seems to be fine if it works with other discs. In any case, I have provided a link to the player's manual: http://tv.manualsonline.com/manuals/mfg/jvc/jvc_xv_n320b_xvn320b.html
Regards, Icom1

Apr 05, 2011 | JVC XV-N320 DVD Player

1 Answer

Why does the Cannot play this disc. statement appear every


If it is just a few random discs the problem is with the individual disc. Either a corrupted (dirty) disc, an unrecognizable format such as a BluRay, DVD-RW, or PAL Disc (out of region).
If it is every disc: http://www.techlore.com/article/10478/Why-Does-My-DVD-Player-Say--No-Disc--/

Nov 23, 2009 | Sony DVP-NS575P DVD Player

1 Answer

DVD not playing


Try a cleaning disc the lens maybe dirty. It can't read the DVD. How long ago have it been since you used it last? The lens could be dusty.

Jul 22, 2009 | Audiovox D1710 Portable DVD Player with...

1 Answer

Dvd disc not playing


Buy a cleaning disc for about $15.00. If that doesn't work it's time to buy a new one.

Mar 16, 2009 | LG RH1999H DVD Recorder/HDD Recorder

1 Answer

Portable dvd says bad disc


i have RC185 DVD/VCR COMBO when i open the power its showing hello only

i cannt operate ...........may be there is any code i purchase from lot...

Feb 27, 2009 | Yahoo Diamond Vision DVDC803-04 DVD Player

1 Answer

Hp dvd player


This problem can often be caused by the DVD player software thinking it is in a region different than your discs. (DVD discs are often encoded with 'region codes' meaning a disc purchased in Asia will not work in a player expecting to see North American discs)

What can happen is the player 'forgets' where it is, and your regioned discs won't play any longer (region free discs should continue to work as will audio CDs ....)

A power surge, random cosmic ray or similar flakiness can cause a player to 'forget' what region it was designed for ....

If that is what has happened you need to 'reset' the region code.

Altho I can diagnose this, I have NO CLUE as to how to do this with a hp DVD player. Anyone out there know how to reset the region codes for this (or generically for a DVD player?)

Thanks!! //cheapz

Nov 15, 2007 | Televison & Video

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