Question about Koss KS2503 System

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Cd tray won't open

Display shows MSG 04.What is the problem and how do I fix it?

I tried unplugging, but it did not work.

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Re: cd tray won't open

It is Koss brand,you shouldn't expect much from it. You could have an A/V repair guy to fix it for you or buy a better brand like panasonic,denon, or even samsung.

Posted on Feb 04, 2008

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If press eject button,it's showing LOCKED.what can i do?

You may try power resetting the unit and check if it helps. To power reset, turn OFF the DVD player and unplug the power cord from the electrical outlet for 30 seconds. Plug the power cord back into the electrical outlet and turn the player ON. Attempt to open the disc tray.

Depending on the model number of your DVD player, simultaneously press the POWER + STOP + EJECT buttons. If the disc tray still does not open, simultaneously press the DISC1 + STOP + EJECT buttons.
NOTE: This step may not apply to all models as DISC1 is not available on all DVD players.

If this does not work and if the DVD player has DISPLAY and PREV buttons, press and hold the DISPLAY+PREV buttons for two seconds to unlock the drawer.

Jan 21, 2015 | home Home Theater Systems

3 Answers

I start up my panasonic sa-pt660 and it makes a lot of ticking noises and give me a chgr err. I tried restarting it. I also tried switching it to the radio and dvd player from the remote and the console...

OK I fixed it. One of the CD's had gotten stuck between trays in the loader. I pulled out a few CD's by forcing open the trays gently. However even after removing as many cd's as possible one was still stuck. 1. Remove screws holding cover plate on in back and sides. 2. Remove cover. 3. Lift face plate latches and lift over top of unit. Remove serial cables from face plate and place aside. Remove screws from back of CD tray unit and bend back metal tab with flathead screwdriver. Lift CD unit up on one side so you can get your fingers up inside underneath and push stuck cd towards tray openings. You can gently force top few trays out. You may need to shake unit so that stuck cd reaches open end. Pull out CD. 4. Replace faceplate and connect serial cables. Plug in power cord, power on unit and make sure trays will eject normally. 5. Put it all back together!

Oct 29, 2010 | Panasonic SC-PT660 Theater System

1 Answer

CD / DVD tray is stuck closed. Is there a manual bypass that I can open the CD / DVD tray?

No, unfortunately not. Open the unit by unscrewing the cover and ease the tray open while the unit is unpluged. Clean the area around the tray cover and try again. Hope this helps

Aug 17, 2010 | Progressive Computer JSI 6 spkr. Home...

1 Answer

CD Stops playing in middle of nowhere

Try cleaning the laser using CD Cleaner, if still won't work.You can cleaning it by your self( if you like !!)

The procedure is:
Open the CD case,by removing all the screw( unplug the power cord first).

After opened, see for the disc unit, it's mechanical unit, try opening it by removing the screw, unplug the driver cable unit and laser pickup ( very thin cables).

Then remove all the mechanical unit from the CD case, now open this unit by removing the top screw, then pull out the Disc Tray by rotating white gear under the tray.

Now you can see the lens, use a clean and soft clothes or cotton buds, use alcohol to clean the lens first, after using alcohol, use dry clothes or cotton buds to wipe it up again until the lens dry.

Resemble all back together and try operate it.

Hope it works!!!

Dec 08, 2009 | Home Theater Systems

2 Answers

CD/DVD door will not open

I have the same problem once in a while usually after a disk read error. If you power off the system (unplug it) it will reset and the door will open.

Jul 13, 2009 | Bose Lifestyle 18 System

1 Answer

Tray door won't open

Sounds like the cd is jammed. Look for a small hole you can poke a paper clip in. This manually opens the tray. If that doesn't work you may have to pry GENTLY on it. Just help it to catch a gear to get your cd out. Then check the operation to see if it was a one time occurance. If not, you may have to buy another one. It's cheaper than getting it fixed.

Apr 28, 2009 | JVC TH-A5 System

1 Answer

DAV-HDX265 dvd tray doesnt open

well, if you hearing clicks is possible that you will only be able to fix by opening and looking if the door has been misplaced..... is possible that a cd is stuck and you need to open to fix.....
another way to fix is to press and hold Eject and Stop ON THE UNIT! while turning the nub to the right (volume up)
that will open the the service unlocking the system!!!!! THAT WILL ONLY WORK if the door or a cd is NOT stuck on it

Aug 28, 2008 | Home Theater Systems

1 Answer

DVD tray wont close

Hi , reset the computer try to open dvd and okey if not try to check belt it visible near the cd tray if still align with the pulley.

Jan 31, 2008 | Bose 3·2·1 II System

7 Answers

Koss KS2503 "MSG 04" problem

I had this MSG 04 problem. Opened the player up. Messed around. Figured out that the 5-disc tray was hanging up a little during the initialization. The issue is that the tray screws into and rotates around a stand-up beam. On the underside of the tray are gear teeth which are spun by a gear on the main unit underneath. The real culprit is the stand-up beam in the very middle. It is too long. The fix is to first try just tightening the middle black screw holding the tray onto the stand-up beam. If this tightens and MSG 04 goes away, you're done. If it does not tighten at all or much at all, then remove the screw (actually a bolt) and using a razor or sharp blade, scrape the top 1/4 millimeter off the stand-up beam. Apply some grease around the beam and on top. Note, you may have to remove the tray to do all this. If so, that is the most tricky part. Carefully lift on the tray on the front side as you rotate it. Try to free a disc circle edge over the top of the front DVD cover and free the tray. To re-set the tray, put it on the stand up beam with the front side of the tray slanted up and slowly rotate while setting it in and down. After re-seating the tray, screw the bolt down but do not tighten all the way. Tighten it enough to allow rotation and enough to rid the msg 04 problem. I shaved my stand-up beam and have never seen a MSG 04 since.

Apr 01, 2006 | Koss KS2503 System

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