I do not know serial number or mg The remote is not new. I tried dvd and set up button but do not know code

To select a proper universal remote control, you should know about the number of digits to its set-up codes. There are 3 digit, 4 digit, 5 digit, 2 digit and even single digit codes, to some brand devices. After confirming this, check the sites linked here. Both the sites have set-up code list and set-up procedure to many popular brand remote controls. Check which brand remote control has set-up code/s to your device brand, and buy that one according to availability. Brand name of the remote control isn't a matter, but it should have set-up codes in its code list, to the device brand you have.
Please note: Every new universal remote control will have set-up code list, and set-up procedure along with its pack. Never accept a remote control, that hasn't both of this. For more details about the set-up codes, visit the sites.
http://electrohelponline.blogspot.com/
http://remotesearch.blogspot.com/
Universal remote controls are available at most of the electronic spare part selling shops. Visit some on-line sites too, which deals with electronic spare parts.

Ray, Check the attached links,remote codes.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

Sony eSupport Remote Control Codes Programming Select Model

New 3 digit codes for DVD VCR DVR SAT TV VCR TV DVD DVR CABLE and DVR DVD...

https://www.att.com/support_media/images/pdf/uverse/set-up-code-list.pdf

To select a proper universal remote control, you should know about the number of digits to its set-up codes. There are 3 digit, 4 digit, 5 digit, 2 digit and even single digit codes, to some brand devices. After confirming this, check the sites linked here. Both the sites have set-up code list and set-up procedure to many popular brand remote controls. Check which brand remote control has set-up code/s to your device brand, and buy that one according to availability.
Brand name of the remote control isn't a matter, but it should have set-up codes in its code list, to the device brand you have.
Please note: Every new universal remote control will have set-up code list, and set-up procedure along with its pack. Never accept a remote control, that hasn't both of this. For more details about the set-up codes, visit the site http://electrohelponline.blogspot.com/ Check this site too. http://remotesearch.blogspot.com/ Universal remote controls are available at most of the electronic spare part selling shops.
Type in the "brand name only" of your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.

Check this code search method. If you wish to know more about codes and setup proceedings to different other brands remote control, check this linkDirect Code Entry

1. Press and hold the SETUP button until the red indicator stays on, then release the SETUP button.
2. Press and release the desired Mode button (TV, VCR, etc.). The red indicator blinks, then stays lit.
3. Enter the 4 digit code from the code tables. Note: after a valid code entry, the red indicator turns off. For an invalid code, the red indicator flashes.
4. With your device on, press CHANNEL UP. If the device responds, no further programming is required. Note: If some buttons do not operate your device, try one of the other codes for your brand.

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it's possible to unlock with a remote control.I Used a "One-For-All" remote.
This process is working on more that this Sony DVD players.

First prepare the remote control to use right device code.
1: Select the DVD button on the remote
2: Hold "Magic/Set" button util the LED blinks twice (Rabbit appears)
3: Press numbers 0533

Now program the remote control to send special codes on button 1 to 5.
1: Hold "Magic/Set" button until the LED blinks twice (Rabbit appears)
2: Press numbers 994
3: Press "Magic/Set" button once
4: Press number 1891
5: Wait some time
6: Hold "Magic/Set" button until the LED blinks twice (Rabbit appears)
7: Press numbers 994
8: Press "Magic/Set" button once
9: Press number 2552
10: Wait some time
11: Hold "Magic/Set" button until the LED blinks twice (Rabbit appears)
12: Press numbers 994
13: Press "Magic/Set" button once
14: Press number 0953
15: Wait some time
16: Hold "Magic/Set" button until the LED blinks twice (Rabbit appears)
17: Press numbers 994
18: Press "Magic/Set" button once
19: Press number 2214
20: Wait some time
21: Hold "Magic/Set" button until the LED blinks twice (Rabbit appears)
22: Press numbers 994
23: Press "Magic/Set" button once
24: Press number 0795
25: Wait some time

Now the remote is ready for use on the DAV-X1
1: Start the DVD without any DVD in it.
2: At the same time press and hold "Eject" and "Stop" in and then press "volume +" to get into the service menu
3: Now use your programmed remote
4: Press button 12345 with a small pause between each num.
5: Press button 12345 with a small pause between each num.
6: Wait some time
6: Press button 12345 with a small pause between each num.
7: Now use your orginal remote and turn the DVD off

Tested to play Region 2 and Region 1 DVDs without any problems after this. (The remote i used was a Cameleon 6)

post the serial number found stamped in the metal casing

Pan use a version of Linux on the recorder. If you change the hard drive there is a format command in setup to format a new hard drive. Put a DVD in and try selecting and playing both DVD and HHD via the front panel buttons. Sometimes you can get error codes on a unit when the batteries in the remote are low. Try changing them Sometimes the remotes are faulty and not communicating properly. A fix in some cases is to press the number button corresponding to the number shown on the display together with the enter or OK button for at least 2 seconds. Good luck

Newer DVD224 is actually DVD-224ss - small print on front of manual. There are two possible hacks:

DVD224SS (This worked for me)
1. Open the DVD tray
2. Press STOP button on the remote control
3. Press 70
4. Press MENU
5. Use the numeric keypad to select your region code number (0 – 6).

OR

DVD224 (224SS)
1. Open the DVD tray
2. Press STOP button of remote control
3. Press the digit number buttons “2008” of remote control.
4. Press MENU
Region code will appear, select your region code number.

press stop button then the power button together the player will go off. put it on again the remote should work.

took me awhile but I figured it out

ok

Put your TV/DVD/VCR on
hold in what you want to program TV/DVD/VCR BUTTON
(you dont need codes or anything)
then while holding in what you want to program (TV, DVD, VCR) hold in ON/OFF
both at the same time

when the light comes on and stays on
keep hitting ON/OFF BUTTON
do it slow, when the TV turns off hit the STOP button at the bottom
then hit the button you just programed
then hit the ON/OFF button, the TV/DVD/VCR will turn on

if it doesnt work, repeat. make sure you hit the stop button when the TV/DVD/VCR shuts off, if you hit it an extra time while the TV/DVD/VCR is off it wont work.

took me about 30 mins to figure it out.