Question about Panasonic PV-D4743 DVD/VCR

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Koss KS4190. doesn't recognize inserted disc.

I was watching a movie and the picture frooze up. I took out disc and reinserted it, but then I got a message saying no disc is inserted. I tried other discs and received the same message. I cleaned the disc but still receive the message.

Thank you,

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5 Suggested Answers

  • 168 Answers

SOURCE: "No Disc" error message

remove the cover of the unit and try to clean the lens with a soft clean dry cotton swab or if you have a compress air cleaner, just blow it. most of the time cleaning can solved this kind of problem. good luck!

Posted on Feb 22, 2008

  • 1665 Answers

SOURCE: PS3 stopped recognizing DATA discs,

Hi have a nice day ; every electric product you buy will have a one year manufacturers warranty, so you should contact sony and find out what they say

Posted on Mar 22, 2008

  • 550 Answers

SOURCE: cant read disc

the laser lenses may be dirty, a commercially available cleaner may help, not a solution, just a suggestion I am not familiar with panasonic

Posted on Aug 21, 2008

  • 537 Answers

SOURCE: always says bad disc

Try to clean the DVD lens using a lens cleaner.

Posted on Feb 16, 2009

  • 1 Answer

SOURCE: mp3 frooze; PC can not recognize it

I experienced the same problem after a week.

The only way to reset the player after freezing was to remove the battery. However starting up again resulted immediately again in freezing of the player (presenting logo, without any further action).

After having removed the battery and not turning the player on again, I inserted the player into the PC USB slot. The PC recognized the player as a memory stick only. (inserting the player in frozen condition did not result in recognition).
Using the right mouse button, I selected windows formatting and formatted the player (select FAT32 file system).
Everything is removed including the drivers for the MP3 player. Now the player is officially downgraded to a memory stick.
The driver for the player was still installed, but it did not recognize any MP3 file, which was actually stored in the memory (visible and playable via windows media player).

I downloaded from the driver and tools download and installed it on my PC.(
After installation an option becomes available via the start menu for "firmware update".
Upon selection a toggle for "formatting" is available.
Selection of formatting results in cleaning up the player and reinstallation of the MP3 player software.
The installed firmware version 2.620.573 is degraded to version 2.620.572, but I don't mind, since the sound volume is improved, while the player functions fine.

So therefore I would advice anyone to follow these steps to enjoy the player more ;-)

Posted on Mar 11, 2009

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Could be a faulty disc. Try another one, or the one you just watched. If it works, you know that it was the movie, If it doesn't run a disc cleaner through it, and then please rate this answer for me.

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Please check weather you have inserted the disc ,whose format is supported by your KOSS player.

If the formatt is not been supported /regonised by the player,It shows as NO DISC only.

check with some other disc which you previously played.If it plays the disc which you using has the problem.


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The laser or the light detector is dirty. Take the cover off and spray it clean with some canned air (Staples, walmart, target, ...). Keep the can up-right while spraying or you will get very cold liquids spraying out and cause humdity from the room air to condense on the inside of the unit and condensation will cause water droplets to say on your lenses.

Put it back together and see how it works.

This same behavior can be from dirty discs but since all discs behave the same, I am guessing it is the player.

Please rate me and good luck.

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KS4190 does not play all DVD's.

if the dvds are in the correct code for your player and they still can not be read try cleaning them with a little bit of white spirit then drying them off gently with a dry cotton cloth. You can also try using a cd lense cleaner for the dvd itself to clean the lease to see if this makes a difference. Other to that it sounds like the dvds are either in the wrong region or maybe are copied versions which some dvd players will not read.

I hope this helps.

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i would say for some reason your dvd player is not compatible from now on with that brand of blank dvd!

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Your DVD player is having a problem reading the disc. This is what is accounting for the pausing and the slow loading times...especially if it plays other movies without hitches. Even if the DVD is cleaned, some scratching on the disc will prevent it from being viewed properly. Blockbuster shoudl give you another disc to try of the same movie if you ask. Also, you can try getting a cleaner for your DVD player to remove dust and help it read discs better.

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Disc Error

try to clean the lens with 100% cotton.or maybe you have defective flex ribbon wire! or laser eye!

Sep 23, 2007 | Durabrand DVD-1002 DVD Player

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