Question about Koss KS2503 System

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Koss KS 2503

My player either doesn't recognize a disc is in place or displays, "menu." I've had this machine only 3 years.

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Re: Koss KS 2503


have you tryed to clean the laser?

You can either buy cd's with brush mountet on it or you can
DO IT YOU SELF remove cover (carefull, high voltage inside, and laser product: so protect your eyes ) and clean the laser with some watter, or other cleaning liquid products?

;) /michael

DIY BLOG why pay when you can play

Posted on Dec 30, 2007

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I need a replacement remote for a Koss KS 4192

hi! i have here a couple of codes for KOSS home theater system, just try them 4003, 2060, 4015, 2200, hope this helps!!! goodluck!!!

Jun 09, 2010 | Koss KS4192 System

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Home theater koss KS3102 need code to unlock it

heres your answer,,, follow this

I tried this, and it works prefect.
1) You do not need to have any disc in the player.
2) Press "menu" "1" "6" "7" "1" "9"
A special menu will appear with cursor pointing at region.

3) Press "OK", and the current region number is disappear.
4) Press "0", and your player now is region free.

Jan 22, 2009 | Koss KS3102 System

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Make sure that the disc you are using are region 1. To check the disc region, look on the spine of the dvd. It should say NTSC region one. You can also download software to change the firmwar of the player to region free. Or your player may already have the capability built in. Go into your menu and check for region settings. If it has them, it should be set to "one" Se it to all regions and it will play any region disc.

Jan 13, 2009 | Bose 3 2 1 GSX System

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DVD Tray stock closed Koss ks 2503

See if you can acquire the software upgrade that Koss engineers devised to solve the problem, I did have one(the upgrade) but misplaced the disc, if you manage to obtain it please e-mail me.

May 25, 2008 | Koss KS2503 System

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Koss Ks4102 video problem

You have chosen the progressive scan option. In this option you will not get a composite video out to your TV using a single cable. you need to switch off this option by connecting the DVD player using three single cables namely Rr, Yy, Bb. this is possible only if you have this input option on your Tv. once you do this you will be able to see the display correctly and do the changes of switching off the progressive option. refer to the manual it is explained

Oct 25, 2007 | Koss KS4102 System

3 Answers

Koss KS5190 Display mode stuck

I'm not ranked and I'm not a Guru, but I can solve this picture rolling when the problem is "the video was accidently changed from NTSC to PAL and you can't see what your doing to get it back". You will need the remote control unit. First, remove the disc from the tray. Now, turn the unit off with the power button. The tray will close by itself. After the display on the front of the unit goes out, turn the unit back on using the remote control. This will let you know the remote control unit is working. When the power comes back on and the display on the front of the DVD player says, "NO DISC", with the remote control and (very important) while pointing the remote at the player, (Remember to point the remote before pressing any buttons) press the "Down Arrow" button 3 times. This will take you to the "Display" box. Now, press the "Right Arrow" button 1 time. This will take you to the "TV Image"box. Now, press the "Down Arrow" 1 time, this will take you to the "PAL/NTSC" box. If you have done everything as I have tried to clearly lead you blindly to your destination. Press the "OK" button 1 time and the picture on the screen will stop rolling and change from black & white to color. You will have now changed your video output from PAL to NTSC. If you press "OK" again, it will start to roll again. If this did not take care of your problem, turn the player off and try it again.
The previous problem solvers were on the right track, but the track was rough and they just about derailed the train. Thanks to them, I had a track to follow. I had no other information, except what I found on "". MR. CD

Feb 03, 2007 | Koss KS5190 System

3 Answers


Had the same exact problem today. Called and e-mailed Koss today and was told player was made by Koss Electronics, not Koss headphones and that Koss Electronics went out of business. Finally just started hitting random 4 digit combinations and would you believe 0000 works? lol

Sep 18, 2006 | Koss KS3102 System

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