DVD player quit playing lights flashing continuously

Happened to me as well. I first had it give me an error with disk 6 flashing so I removed it, put it back in and the lights would flash from 3 left to 3 right. I removed the DVD changer from the car again, removed the top (one screw), removed the black face plate (4 screws and carfully pry up on the bottom tabs when pulling it forward. I then took out the five screws holding the changer (four on top, one in the back) and removed the changer so I could get to the bottom. There is a set of wheels on the bottom that I started to turn which was easy at first but it seemed to reach a point where it was stuck so I gave it a bit more and something seemed to snap into position. So I assume that it was just the mechanism that jammed when it tried to switch disks. I put it back together, installed it, and it works fine now. When it first started all the lights would flash but then it settled down to a single light and I ejected the first 3 disks and number 6 and let it play the forth. Now to see how long it lasts.

IF YOU HANDY IT IS AN EASY FIX, I DID FIX MY. LOOKS LIKE YOU OR SOME FORCED A DISK IN TO THE CD HOLDERS.
1- I DID TAKE OUT THE CD CHANGER FROM THE CAR,
2-OPEN THE TOP CASING OF THE CD CHANGER,NOW YOU CAN SEE THE CDS AND THE HOLDERS WHICH SAPARATES THE CDS,IT IS VERY LIGHT TIN OR ALLUMINIUM PLATES, USSUALLY ONE OF THEM IS BENT THAT IS THE PROBLEM STRAITEN AND PUT IT BACK. FIX YA AND SAVE 500 BUCKS.

You can not fix this, DVDs are coded in such a way that a for instance a DVD sold in the European market can't be played on a DVD player sold in the USA. You can buy region free DVD players, but they are not sold at the local electronics stores, they are available on eBay I'm told.

Unfortunately 90% of the time when you get error codes from the CD player/changer it means that there is a mechanical failure in the CD player/changer unit itself and it usually requires CD player/changer rebuild or replacement...
First make sure you have entered the correct anti-theft code. If battery power has been disconnected recently than the stereo display will read CODE if the incorrect anti-theft code is entered the display will read ERR1 thru ERR3. If this is the case you'll have to get the correct anti-theft code. Note; If you enter the incorrect code three times the stereo locks up. Disconnect the battery for more than 30 seconds and then retry.
FYI;Never use adhesive labels or protective disc covers on recordable CD's. Recordable CD's are actually thicker than pre-recorded CD's. Automotive players and changers use rollers to draw the disc into the unit. The added thickness of an adhesive label or protective disc cover may cause the disc to jam. Also CD players and changers are exposed to high temperatures inside the vehicle. High temp will cause the labels adhesive to soften which may cause the labels edges to curl or cause it to bubble. Either one may cause the disc to jam. If the player can not be disassembled and have the discs removed successfully than it will have to be replaced. -hope this helps.

If your using copies then some dvds wont read them even if the old one did, sometimes its a gamble if it reads or not, if your using a master then i would have them check it out, it may be bad or need programing, it funny because sometimes it will play a copy and sometimes not, thats what i've run into. hope this helps.

Okay, I'm assuming that you were sucessful in resetting your radio code.
I'm also assuming that you have a CD player (which may not be the case).
The flashing clock also functions as an error code indicator. It should say something, indicating what the error is. You can't set the clock until the error is resolved (a disc stuck in the CD player, for example, on no disc in the CD when it's been told to play).
The procedure is as follows (which you probably know):
The audio system display usually shows the time when the ignition switch is in ACCESSORY (I) or ON (II). It shows the operation mode of the radio, cassette player, or optional CD player/changer when you operate them, then goes back to the time display after five seconds.
If an error occurs while operating the optional CD player or changer, the display will keep showing the error code and will not switch to the time display until the error is corrected. You can set the time only when the clock is displayed.
To set the hours, press the H (Preset 4) button while pressing the CLOCK (SCAN/RPT) button. Press and hold the H button until the hour advances to the desired time.
To set the minutes, press the M (Preset 5) button while pressing the CLOCK (SCAN/RPT) button. Press and hold the M button until the minutes numbers advance to the desired time.

If you don't have a CD player, or no error is showing in the clock read-out, leave a comment so I can investigate further.
Hope this helps you.

first on the car and play

Disclaimer: I am not a professional. This is an account of what I did to replace my DVD changer. If I had been offered the $450 installed option, I would have taken it.

According to the boys at Car Toys and the dealer, once these DVD changers go, they have to be replaced. The dealer quoted me $705, but I found one on E-bay from a highly rated seller for $400. I was able to pull out the DVD changer by popping off the trim betwee the DVD player and the cup holder, and then removing two screws. Note that it may help to remove the cup holder.

Once those two screws at the bottom are removed, it just takes a firm tug on console shell below the DVD player for the whole face of the console to come off. Disconnecting the airbag indicator connector will allow the console face to be pulled far enough away to get at the DVD changer. All connectors have a tab you need to press while pulling.

Two more screws need to be removed to get the DVD changer out. With those screws removed, another firm tug and wiggle will release the DVD changer. You'll probably hear a metal popping sound, which is just the rear grounding tab (I think that's what it is) pulling free from the cage.

Once you can reach the two wiring harnesses behind the DVD changer, pull on the wire bundle to give yourself some slack to work with, while not stressing the cable assemblies too much. Disconect the two connectors at the back of the DVD changer. At that point the DVD changer can be removed, and you can search on E-bay for the part number. My unit had a complete wiring diagram for the two connectors on the sticker, but I couldn't find anyone with the right connectors to install an aftermarket system.

I haven't received the new part yet, so I'm a little nervous about the correct order of connector installation. I'll probably pull the battery terminals while installing the new unit, but here is where you are on your own. Good luck.

Replace it

you may have a different region on you dvd to your dvd player. say your dvd player was 1st region you can only play 1st region dvds if you try a 2nd or 3rd region dvd it would not work. you can go to a dvd specialist to get it tuned to a multiregion dvd player.
go to a dvd player shop and ask if they know how to tune it.