How to reset factory gv-as controller without as-keypad

This model set uses 3 different main boards, they all look the same but not interchangable, this sounds like you have the wrong part installed. Match the old board part number to the new one, I think you will find they're different. If they're the same you received a defective board

Try this

How do I reset my Panasonic cordless phone to factory settings? How to Factory Reset Panasonic Phones

1. Press the Menu soft key (middle soft key) at the bottom of the screen.
2. Select System Settings from the menu.
3. Enter #136 on the keypad.
4. Select Yes when asked if you are sure you want to factory reset the phone. The phone will be reset successfully after startup.

some videos that _may_ be useful.

https://www.google.com/search?q=Panasonic+TGA520M+used+handset%2C+how+can+I+deregister+it+without+the+base+set

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press *** on the keypad, then enter from the softkey. If the phone keypad was accidently locked you can unlock it without a pw, but if was intentionally locked with a pw the only way to unlock it is either with a pw or to factory reset the phone

Solution : Perform a Software Reset The Software Reset utility allows for the reset of the machine software without powering the machine off and on.

1. Press the [Log In / Out] button on the Control Panel.
2. Enter the password using the numeric keypad, and then select [Enter] on the Touch Screen.
   
   NOTE: The default password is "1111". It is recommended that the System Administrator change this password. For additional information, press the [Help] button on the Control Panel.
3. Press the [Machine Status] button on the Control Panel.
4. Select the [Tools] tab on the Touch Screen.
5. Select [Device Settings].
6. Select [Tests & Resets].
7. Select [Software Reset].
8. Select the [Reset System Software] button. A pop-up window will be displayed warning that jobs in the system may be lost, and asking you to confirm that you wish to continue.
9. Select [Confirm] to perform the reset.

you must use the MENU for to restore the fACTORY setting.
Howwever you must open the remote control for to cleant the KEYPADS for dirty, grease, with c. cleaner solvents very IMPORTANT.
Otherwise you must to the repair shop TV for fix it.
God bless you

Here's the factory reset code for your Samsung Corby Genio Touch:
On the main menu(desktop) type in the following using the virtual keypad:*2767*3855#

• Warning: All data & setting in phone erase & reset to factory default automatically without any confirmation

KEYLESS ENTRY SYSTEM You can use the keyless entry keypad to:• lock or unlock the doors without using a key.• open the trunk.• recall memory seat/mirrors/steering column/adjustable pedals positions1 or 2. The keypad can be operated with the factory set 5-digit entry code; this code is located on the owner's wallet card in the glove box, is marked on the computer module, and is available from your authorized dealer. You can also create your own 5-digit personal entry code. When pressing the controls on the keypad, press the middle of the controls to ensure a good activation. Programming a personal entry code. To create your own personal entry code: 1. Enter the factory set code. 2. Within five seconds press the 1 • 2 on the keypad. Note: The lock motors will cycle, locked then unlocked 3. Enter your personal 5-digit code. Each number must be entered within five seconds of each other. 4. Enter a sixth digit to indicate which personality feature should be recalled by the personal code. Note: The lock motors will cycle, locked then unlocked. • 1 • 2 recalls driver personality 1. • 3 • 4 recalls driver personality 2. • 9 • 0 does not recall a driver personality. Wait 5 seconds without pressing a keypad button in order to store a personal entry code. Tips: • Do not set a code that uses five of the same number. • Do not use five numbers in sequential order. • The factory set code will work even if you have set your own personal code. • If you set a personal code and store it over an existing personal code it will erase that personal code only. Erasing personal code 1. Enter the factory set 5-digit code. 2. Press and hold the 1 • 2 for two seconds and release; this must be done within five seconds of completing step 1. 3. Press and hold the 1 • 2 for two seconds to erase the customer programmed code; this must be done within five seconds of completing step 2. Your personal code is now erased and only the factory set 5-digit code will work.

No this is a safety issue because if you could make your own code without the factory code then anyone could make their own code for your vehicle and break in. You should go back to the dealer and have them reset the code for you.

You must have the original code to change it, if u do here is how you do it.
KEYLESS ENTRY SYSTEM
With the keyless entry keypad, you can:
• lock or unlock the vehicle doors without using the key,
• release the liftgate glass,
• enable or disable the autolock function, and
• add or delete a 5–digit personal user code.
Your vehicle has a factory set 5–digit code that operates the keyless
entry system. You can also program your own 5–digit personal entry
code. The factory-set code is located:
• on the owner’s wallet card in the glove compartment,
• at your dealer,
• or on the module located under
the right-hand side of the
instrument panel, adjacent to the
passenger compartment fuse
panel.
Note: The 5–digit code (e.g. 12345)
will be in large, BOLD numbers on
the module label.
When pressing the controls on the keyless entry keypad, press the
middle of the controls to ensure a good activation.
Programming your own personal entry code
To program your own code:
6. Enter the factory set code (keypad will illuminate when pressed).
7. Press the 1 • 2 control within five seconds of Step 1.
8. Enter your personal 5–digit code.
Enter each digit within five seconds
of previous one.
9. After the code is entered, the
locks will cycle, confirming that the
new code has been set.
Do not set a code that includes five of the same number or presents
them in sequential order. Thieves can easily figure out these types of
codes.
Your personal code does not replace the permanent code that the
dealership gave you. You can use either code to unlock your vehicle. If a
second personal code is entered, the module will erase the first personal
code in favor of the new code.
If you wish to erase your personal code, use the following instructions:
1. Enter the factory set code.
2. Press the 1 • 2 control and release.
The system will now only respond to the factory set code.

try to go to their homepage for assistance ,since this item no longer available,heres the link : www.govideo.com/?GV=DP5040