20 Most Recent Koss KS2503 System - Page 2 Questions & Answers


You have a disc stuck in the unit, or your retrieving tray is broken.

Try unplugging the unit, and slowly-gently turn it over-side to side - see if there's a disc inside.

I have experienced the same error code, and it was a disc.

Koss KS2503... | Answered on Nov 19, 2010


You need to choose the correct INPUT that the optical cable comes from, whatever that is. Have you looked at the source?

Koss KS2503... | Answered on May 04, 2010


check your connections on the back of the tv and back of the dvd player. make sure you are using the proper conections on the back of the tv. if you connect the RCA (composite) cables (red yellow white) you should be going from the red yellow white on the tv to the red yellow white on the dvd player. if you have the component(red blue green) connection on the dvd connected to the red yellow white on the tv, you may get a black and white picture. If this does not work, check the manual for the dvd player and see if there is a way to turn "Progressive Scan" features off, some older TV's cannot handle a progressive scan dvd player.

Koss KS2503... | Answered on Mar 02, 2010


has parts short check power supply and power out parts...

Koss KS2503... | Answered on Jan 02, 2010


unplugg your tuner from the AC wall outlet then check the setting on the tuner do not try to watch and listen to the tv only try to listen to the radio or a CD and select the right option on the tuner to do so. If you have sound on any of the functions....radio or CD/MP3 then the problem lies on the setting not correct for the TV/VCR/DVD mode.

Koss KS2503... | Answered on Sep 12, 2009


oh, go to the manufacterer and they will replace it for free

Koss KS2503... | Answered on Jul 26, 2009


Thanks so much, the 0000 worked for me too!!!

Koss KS2503... | Answered on May 11, 2009


I have a PDF of this manual if still needed?

Koss KS2503... | Answered on May 02, 2009


I assume you want your audio to go to the Koss.

The audio connectors are pretty much standard; red & white. They should be the same on both units.

The red=right channel and white=left.
The proper output from the TV is probably marked 'Line out' and 'Line in' on the Koss.
These are normally an auxiliary input and may be marked either 'Line' or 'Aux' on your input selector.

You may have gotten some of these cables with your Koss and if not, they are available wherever TV/stereo stuff is sold.

Koss KS2503... | Answered on Jan 25, 2009


I have the same problem, dvd works but no sound only a buzz sound.Did I blow something

Koss KS2503... | Answered on Dec 28, 2008


If the output module(s) has/have not failed (you need to know a bit to check this), then the power supply problem is probably traceable to a failed capacitor that caused the further failure of a switching transistor.
Locating this problem requires some electronic knowledge and at least a (digital) multimeter.

About the only thing you can do by eye is look for cans, normally mounted vertically on the board, mostly with the aluminum of the case visible at the top and shrink-wrapped sides that have values printed on them.
If you see any that have cracked tops or deposits on the board nearby, these may have caused the problem but the major component that is causing the fuse to blow is/are diodes or switching transistors on the AC side or shorted diodes on the DC side.

Because the failure might be related to bad capacitors, not having any way to check them pretty much precludes do-it-yourself repairs.

Replacing a blown fuse is sensible; replacing it twice is futile.

Koss KS2503... | Answered on Aug 05, 2008


You are better off buying a portable; u can get a magnovox DVD player for under $40 with DivX and connect it to the unit, and use it that way. www.kcwholeseller.com

Koss KS2503... | Answered on Jul 01, 2008


I have the manul, can I help?

Koss KS2503... | Answered on Jun 21, 2008


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.
Art.

Koss KS2503... | Answered on Jun 08, 2008


Try to load up a basic CD audio disc and see it works?If it doesn't,you need to repair your unit or buy a GOOD brand new like panasonic,samsung or Denon.

Koss KS2503... | Answered on May 12, 2008


Any number of issues could be happening.  From overloading circuts to horribly designed disk readers.  As much as I would love to give you technical help, I can only suggest that you don't buy products from this brand anymore.

Koss KS2503... | Answered on Mar 17, 2008

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