The screen displays a code of 24C02 after new batteries are installed

Remove and install new batteries, if displays reprogram. if no display replace thermostat

How To Install Programmable Thermostat The Home Depot

It could be that a code needs to be entered to reactivate your radio. It is common nowadays, to encode all car audio devices so that if they are stolen, they will be of little value to the thief who will have difficulty selling them.There should be a code somewhere on the vehicles paperwork that includes such a code . It may be that , if your vehicle had a previous owner, they may know it. Also, many car audio installers can crack the code of a particular unit
Good Luck with it

Hello, you can download this tool here:

http://www.cgsecurity.org/wiki/CmosPwd

Dell

The official method is to contact Dell Technical Support. Dell Technical Support will request the Service Tag and Express Service Code from the bottom of the Latitude. If the current user is not the original Latitude owner, Dell will transfer the used Latitude's registration from the original owner with only the Service Tag and Express Service Code from the tag on the laptop.

• Dell Inspiron 5100: eeprom 93lc46, password in scan code at 0x310
• Dell Inspiron 7500: eeprom 24c164
• Dell Inspiron 8100: eeprom 24c02
• Dell Latitude C600: eeprom 24c02, password in scan code at 0x00, 0x10 and 0x90
• Dell Latitude C610: eeprom 24c02, password in scan code at 0x00, 0x10, 0x80 and 0x90
• Dell Latitude C640: eeprom 24c04, password in scan code at 0x100 and 0x180
• Dell Latitude CPI: eeprom 24c02, password in scan code at 0x00, 0x10, 0x80
• Dell D600: eeprom 24c04, password in scan code at 0x110
• Dell Optiplex: Remove the PSWD jumper
• For most Dell Dimension desktops, the steps to reset a BIOS password and clear all CMOS settings are:
  • Locate the 3-pin CMOS password reset jumper on the system board.
  • Remove the jumper plug from pins 1 and 2.
  • Place the jumper plug on pins 2 and 3 and wait approximately 5 seconds.
  • Replace the jumper plug on pins 1 and 2.

Try the backdoor password: Dell

The another method is: by Using the Motherboard Jumper: In most motherboards CMOS battery is soldered, which makes it difficult to remove the battery. In this case we use another method.
Almost all motherboards contain a jumper that can clear all CMOS settings along with the BIOS password. The location of this jumper varies depending upon the motherboard brand. You should read your motherboard manual to check its location. If you don't have the manual then look for the jumpers near the CMOS battery. Most of the manufacturer label the jumper as CLR, CLEAR, CLEAR CMOS, etc.
When you find the jumper, look carefully. There will be 3 pins and the jumper will be joining the center pin to either left or right pin. What you need to do, is remove the jumper and join the center pin to the opposite pin. e.g. if the jumper joins center pin to left pin, then remove it and join center pin to right pin. Now wait for a few seconds and then again remove the jumper and join the center pin to left pin.
Make sure to turn the PC off, and remove the battery and power cord
( if it is a laptop ) before you continue.

Here is a picture how it looks like:



The default setting is:pin 1 to 2, to clear cmos: 2 to 3.

Best of luck :-)

That looks like an aftermarket radio, meaning it did not come with the car and was installed afterward. how to get the code would be new to me. the factory radios the dealer can get the code with serial # and proof of ownership.

I would try to contact kenwood they are the ones who will be able to help you. when the radio was installed who programed the code, if no one entered a code then it may be a default code like 0000 or 9999 but i would call them first.
is the screen displaying the word CODE?

what happened, did you replace the battery or radio just went out?

You may try default phone and security code to remove restrictions.
ur defalt phones codes is 12345 or 00000 u can use it
Default 4 Digit user code: 1234 or 0000
Default 6 Digit Security code: 123456 or 000000

Type *#06# at the mobile screen to know IMEI no of your mobile.
send the IMEI no to me and i will reply you with unlocking code.
IF Problem not Solved So
Please New Software install in the Phone Problem will Solved

the 24c02 is a memory chip inside. Unless your a tech - you can't repair.

The process is called "Registering."

From another fixya post:

1. Make sure to charge the handset battery pack at least 12 hours.
2. Using the soft keys on the base located below the base screen, press MENU.
3. Use the up or down arrow keys to select DISPLAY BASE ID.
4. Press OK. The base screen will display the 15-digit Base ID
code for about 30 seconds, then the unit returns to the idle
screen. Write down the Base ID code on a piece of paper.
5. At the cordless handset, use the soft key to select NEW.
6. Enter the 15-digit Base ID code using the number keypad.
7. Use the soft key to select OK. The screen displays PLEASE
WAIT!.
8. After about 45 seconds, the screen displays FOUND BASE. If the handset displays BASE BUSY TRY LATER, the base is in
use.

Why would it do that after you change the batteries though? Im having the same issue

Hi,
Check that the terminals in the battery compartment are clean and shiny. Remove any powder left after battery leakage. Insert fresh batteries in calculator. Make sure you respect the polarity diagram. +-+- (Many malfunctions come from incorrectly placed batteries).

After replacing batteries, calculator is restored to defaults and screen display may be too loght or too dark

To adjust the screen: Darken or lighten display

To darken screen
Press [2nd] key and release it.
Press and hold [UpArrow] until screen is dark enough.

To lighten screen
Press [2nd] key and release it.
Press and hold [DownArrow] until screen is light enough.

Hope it helps.

ok i found the the code located at address B0h and B2h and it,s repeated again at B4h and B6h but it's reversed ie. 45 67 code would be 67 45