The screen on my telephone handset is unreadable

Add and register a handset
Each newly purchased handset must be registered to the telephone base before use. When first purchased, each expansion handset shows NOT REGISTERED.
You may need to charge the phone first.
To register a handset:

·Place the unregistered handset in the telephone base or charger. Press Find for 4 seconds. If the headset screen doesn't light up after the 4 seconds. You will need to charge it some more.
·After making sure it is charged set the telephone on the main base again press and hold the Find button for 4 seconds ( until the red light IN USE comes on) Then release the find button. The headset will show PLEASE WAIT; this takes about 10 seconds to complete the registration. The hand set will show HEADSET REGISTERED and the headset number assigned, you will hear a beep when the registration is finished
·When the registration is complete, the newly registered handset is assigned the next available handset registration number. For instance, if you already have HANDSET 1 and HANDSET 2, the next registered handset is HANDSET 3.
·Makes sure no other headsets are in use at the time or the registration may fail.
·You cannot register a handset if any other system handset is in use. Only one handset can be registered at a time.

If you want to replace a handset or re-assign the designated handset number of a registered handset, you must de-register all the handsets and then individually register each handset.
To de-register all handsets:
Press and hold
FIND HANDSET
on the telephone base for about 10
seconds (until the IN USE light on the telephone base turns on and starts to flash), then release FIND HANDSET
.
Press and release
FIND HANDSET again. (You must press FIND HANDSET
while the IN USE light is still flashing. The IN USE light flashes for
approximately seven seconds.)
All system handsets show
CONNECTING...
The de-registration process
takes about 10 seconds to complete. All handsets show
NOT REGISTERED
when the de-registration completes.
If de-registration fails, you might need to reset the telephone and try again.
To reset:
Pick up the registered handset and then press
/FLASH
.
Press
OFF/CLEAR
and place the handset back in the telephone base.
-OR-
Unplug the power from the telephone base, then plug it back in.
note:
You cannot de-register a handset if any system handset is in use.

After de-registering, proceed with registering process:
If the handset screen does not show LOW BATTERY
or HANDSET X, you will need to charge the handset for at least five minutes before registering to the telephone base.
To register a handset:
Place the unregistered handset in the telephone base or charger. If
PRESS FIND HS 4 SEC ON BASE
does not appear on the handset screen after a few seconds, remove the handset and place it in the telephone base or charger again.
On the telephone base, press and hold
FIND HANDSET
for about four seconds (until the red IN USE light on the telephone base turns on) and then release the button. The handset shows
PLEASE WAIT...
and it takes about 10 seconds to complete the registration. The handset shows
HANDSET X REGISTERED
(X represents the handset number assigned)
and you hear a beep when the registration completes.

Model LS6305: How to register a handset:

1. Place the non-registered handset in the telephone base or charger. If 1.Press FIND HS on base 4sec and 2.Then press # on handset do not appear alternately on the handset screen after a few seconds, remove the handset and place it in the telephone base or charger again.
2. On the telephone base, press and hold FIND HANDSET for about four seconds until the red IN USE light on the telephone base turns on.
3. Remove the handset from the telephone base or charger and then press # (pound key). It displays Registering...Please wait. It takes about 60 seconds to complete the registration. The handset displays Handset X Registered and you hear a beep when the registration process completes.

• If the registration fails, the handset displays Registration failed for a few seconds, then 1.Press FIND HS on base 4sec and 2.Then press # on handset alternately. To reset the handset, remove it from the telephone base or charger and place it back in. Try the registration process again.

Model ip8300: How to register a handset:

1. Press and hold FIND HANDSET for at least 10 seconds on the telephone base. The VMWI and LINE IN USE lights will blink alternately indicating that the telephone base is in registration mode.
2. To display the telephone feature menu, press the Menu softkey from the main idle screen.
3. Press the up, down, left and/or right NavKeys to choose Registration Settings then press the Select softkey or center NavKey/SEL.
4. Press the up or down NavKey to choose Handset Settings then press the Select softkey or center NavKey/SEL.
5. Press the up or down NavKey to choose Register to Base then press the Select softkey or center NavKey/SEL. A list of locations for assigning telephone bases will be displayed.
6. Press the up or down NavKey to choose an empty location and press the Register softkey or center NavKey/SEL.
7. The handset will display Searching while it searches for the telephone base. If the search is successful, a code from the telephone base will be displayed. To register the handset to the telephone base, press the Register softkey.
8. In the Enter PIN box, enter the system PIN. The default PIN is 0000. Press the Apply softkey.
9. Handset registered will be displayed when the registration process is complete. The screen will return to the registration settings menu. Press OFF to return to the idle screen.

Model ip8301: How to register a handset:

• Before registering the handset with the base station, press the FIND HANDSET button in the base till the VMWI and LINE IN USE lights blink alternatively. When the lights start blinking, register the handset. The default PIN for registering the handset with the base station is 0000.
  

1. Press Softkey Menu from Home screen
2. Choose the Settings icon from Menu screen and press center Navigation key/SEL to display the settings menu options.
3. Press the up or down Navigation Key to choose the Registration Settings menu option and press the center Navigation key/SEL to select.
4. Press the up or down Navigation Key to choose the Handset Settings and press the softkey Select to select.
5. Press the up or down Navigation Key to choose the Register to Base and press the softkey Select to display a list of available base stations. Choose a base station from the list and press the softkey Select to select.
6. The handset will search for the Base within its range. During this time, the searching screen will be displayed.
7. If the search is successful, the Base station number of the base will be displayed.
8. Press softkey Register. Enter the PIN and press softkey Apply to save and subscribe to the base station.
9. To cancel the entire operation, press OFF key anytime.
   

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Please try the following procedure to register the handset:

1. Place the unregistered handset in the telephone base. If PRESS FIND HS 4 SEC ON BASE does not appear on the handset screen after a few seconds, remove the handset and place it in the telephone base again.
   
2. On the telephone base, press and hold FIND HANDSET for about four seconds (until the red IN USE light on the telephone base turns on) and then release the button. The handset shows PLEASE WAIT... and it takes up to 60 seconds to complete the registration. The handset shows HANDSET X REGISTERED (X represents the handset number assigned) and you hear a beep when the registration completes.

When the registration is complete, the newly registered handset is assigned the next available handset registration number. For instance, if you already have HANDSET 1 and HANDSET 2, the next registered handset will be HANDSET 3

If you are using this phone on a Panasonic KX-TDA 30/100/200/600 system.
From the Switcboard / Main telephone or Managers phone with the handset on the cradle/hook:
1. Press PROGRAM * * or PROGRAM * # followed by the system password ( default is 1234).
2. Now press 004 and then ENTER.
3. Enter the extension number you want to change.
4. Enter the name (the same way as texting on a cellphone)
5. To save the changes press AUTO DIAL / STORE.
6. To go to the next extension press NEXT on the screen.
7. Lift the handset and put it down to exit program mode.

If you are using this phone on a Panasonic KX-TDA 30/100/200/600 system.:
From the Switcboard / Main telephone or Managers phone with the handset on the cradle/hook:
1. Press PROGRAM * * or PROGRAM * # followed by the system password ( default is 1234).
2. Now press 004 and then ENTER.
3. Enter the extension number you want to change.
4. Enter the name (the same way as texting on a cellphone)
5. To save the changes press AUTO DIAL / STORE.
6. To go to the next extension press NEXT on the screen.
7. Lift the handset and put it down to exit program mode.

Incoming email to Blackberry Bold or new Curves is extremely light yellow when sent from Outlook 2003. I solved the problem by going to Options, Mail Format, under Stationary and Fonts, my Use this stationary by default: was set to the word <Blank>. When I changed it to <None> the problem was solved!

To deregister ALL handsets:
Step 1: Press and hold FIND HANDSET on the main telephone base for 10 seconds.

Step 2: When the IN USE light starts to flash, release the FIND HANDSET button.

Step 3: Press and release FIND HANDSET again. The IN USE light will turn off and in a few seconds, all handsets will be de-registered.

Step 4: All handsets will show NOT REGISTERED.

To register a handset (register 1 handset at a time):
Step 1: Place the handset in the base unit or a charger that is connected to a power outlet. If PRESS FIND HNDST 4 SEC ON BASE does not appear on the screen after a few seconds, lift up handset and place in base or charger again.

Step 2: On the telephone base, press and hold FIND HANDSET for four seconds. Release FIND HANDSET once the IN USE light comes on.

After a while the handset will emit a series of tones, the newly registered handset will be assigned the lowest extension number not previously assigned to another system handset (1-4) when successfully registered. Repeat Steps 1 and 2 if the handset does not successfully register to the telephone base within two minutes.

REPEAT THE REGISTRATION PROCEDURE FOR EACH SYSTEM HANDSET.

Make sure the handsets are not receiving interference from other appliances, cell phones, etc.

IF deregistering does not work .. you will need to reset the entire system
Step 1: Disconnect the power to the telephone base.

Step 2: Disconnect the handset battery.

Step 3: Wait a few minutes and then reconnect the power to the telephone base.

Step 4: Reconnect the handset battery

Step 5: Wait about one minute for the handset to re-establish a link with the telephone base and then test the phone again.
You will need to set the time and date again after resetting the entire system.

Oh wow, I have never encountered this problem before. I think your screen may be bad, or there is a loose solder connection. You might need to resolder a connection, or get the screen replaced. If you don't feel comfortable taking it apart, you should take it to a technician who can do all the work for under $100.