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Another take on repairing the CD-i's Timekeeper Battery

>> Tuesday, September 15, 2009

Richard lagendijk made a new article about repairing the timekeeper battery on a CD-i player. Based on previous articles published here on Interactive Dreams, see this as fine-tuning the tutorials for people who would like to repair the battery by themselves.

Inside a CDi player is a special IC where games can store data. This data is stored even when the CDi player is switched off. The data is normally the high-score list of the game. After a number of years the high-scores are not stored anymore. The Timekeeper IC does not function anymore. A simple solution is to replace the IC in the CDi player. But what is wrong with the Timekeeper IC? The IC is a RAM memory with it's own battery. This battery keeps the data inside the RAM available. Sadly after a number of years the battery will be empty. On the picture you can see the inside of the CDi player. This is a Philips CDi-210 player. The red arrow points to the Timekeeper IC (M48T08 150). Click on the picture for a bigger version.

Opening the Timekeeper IC is not as easy to do as it's sounds. The battery is sealed inside the upper-part of the IC. With a small saw I removed the front (upper) part of the IC. After that I took a sharp knife and slowly removed the sealing compound out of the IC. Be careful with this, because you do not want to damage the connections from the battery to the RAM memory. Also do not damage the lower-part of the IC where the RAM memory is. On the picture you can see a small part of the battery. Remove the sealing compound until the two connections from the battery to the RAM memory are available. Check with a Voltage-meter where the positive and the negative connections are on the battery. Solder a wire to each of the connections from the battery to the RAM memory. I used a red wire for the positive and a black wire for the negative, but you can use other colors. Keep the wires long enough so that you can place the "new" battery on a easily accessible place. After you have soldered the wires, you need to disconnect 1 side of the old battery. The red arrow is pointing to the point where I cut through the connection with a sharp knife. Now it's time to clean the inside of the CDi player. Make sure that all the dirt from opening the IC is removed from the CDi player. For extra strength you can add some (hot-) glue to soldered wires.

For the new battery I used a old battery holder from a PC. The battery is a CR-2032 (3 Volt) type. The battery holder is placed upon a piece of experimental pcb. This pcb is mounted on a small metal tab that was not used. The wires from the Timekeeper IC are connected to the battery holder. The battery can be replaced easily, but that not necessary for another 10 years.

After everything is installed you can close the CDi player. On the picture you can see that the Digital Video Cartridge is installed. Testing if it works. Start the CDi player and play a game. Save your high-score. Switch the CDi player off for a while and switch it on again. If the high-score is still available you have successfully repaired your Timekeeper IC.

Thanks to Richard Lagendijk

6 reacties:

Patrick,  May 12, 2010 at 9:54 PM  

Just opened up my cd-i 220/60, to give it a good clean, since audio is going bad after playing a few minutes of the apprentice.
I decided to look where the m48t08 timekeeper chip was located. But i couldn't find it. I did notice a stack of ic's near the side of the cd tray but it wasn't the m48t08, but a mitsubishi m5m5256cp-70lls that was installed. After looking at the specs of this chip i noticed it was the ic i was looking for.
The m5m5256 was stacked up onto a socket, that was installed onto a bigger socket. Maybe this sockets holds the battery but i don't know.
Is there more info on this? Since all i see is info about the m48t08. Is it an after market fix?
Hope you can fill in the blanks.

Bas May 13, 2010 at 6:26 AM  

When you say that that chip was mounted on a bigger socket, bells start to ring here it might have already been repaired before! I'm not familiar with a mitsubishi chip in the CD-i. Would it be possible to share a picture? It's hard to say with this information...

Anonymous,  August 23, 2014 at 9:03 PM  

Mine cd-i 220 also uses a mitsubitshi m5m5256 chip but has a different end number. It's the m5m5256cp-70ll. It's stacked into a socket, that is stacked into a second socket. Could be that the middel socket holds the battery? Mine has saved data from '94 onto it.

Candela January 12, 2016 at 12:10 AM  
This comment has been removed by the author.
Candela January 26, 2016 at 12:10 PM  

Underneath the M5M5256CP-70LL is a DALLAS DS1216-9426D3 which is the "timekeeper".

No idea if it can be fixed in a similar way but it's much smaller and harder to reach than an M48T08 timekeeper because it's surrounded by the M5M5256CP-70LL socket.

I have seen these chips in a CDI220/60 and CDI220/80

Candela January 26, 2016 at 12:11 PM  

Underneath the M5M5256CP-70LL is a DALLAS DS1216-9426D3 which is the "timekeeper".

No idea if it can be fixed in a similar way but it's much smaller and harder to reach than an M48T08 timekeeper because it's surrounded by the M5M5256CP-70LL socket.

I have seen these chips in a CDI220/60 and CDI220/80

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Games 0-F

3rd Degree - PF Magic
7th Guest, The - Philips Freeland Studios
Accelerator - SPC/Vision
Adventure of the Space Ship Beagle, The - Denshi Media Services
Affaire Morlov, L' - Titus
Alfapet - Adatek
Alice in Wonderland - Spinnaker
Alien Gate - SPC Vision
Alien Odyssee - Argonaut
Aliens Interactive CD-i - Dark Vision Interactive
Ange et le Demon, L' - Smart Move
Apprentice, The - SPC Vision
Apprentice 2, The - Marvin's Revenge - SPC Vision
Arcade Classics - Philips ADS / Namco
Asterix - Caesar’s Challenge - Infogrames
Atlantis - The Last Resort - PRL Redhill (Philips ADS)
Axis and Allies - CapDisc
Backgammon - CapDisc
Battle Chess - Accent Media (for Interplay)
Battleship - CapDisc
Big Bang Show - Infogrames
BMP Puzzle - Circle (for ZYX)
Brain Dead 13 - Readysoft
Burn:Cycle - Trip Media
Caesar's World of Boxing - Philips POV
Caesar's World of Gambling - CD-I Systems
Cartoon Academy - Bits Corporation
CD-i mit der Maus - SPC Vision
CD Shoot - Eaglevision Interactive Productions
Change Angels Kick-off - HMO
Chaos Control - Infogrames
Christmas Country - Creative Media
Christmas Country - The Lost Levels - Creative Media
Christmas Crisis - DIMA
Clue - 3T Productions
Clue 2 - The mysteries continue - 3T Productions
Connect Four - CapDisc
Creature Shock - Argonaut (for Virgin)
Crime Patrol - CapDisc
Crow, The - Philips POV
Cyber Soldier Sharaku - Japan Interactive media
Dame was Loaded, The - Beam Software
Dark Castle - Philips POV
Dead End - Cryo
Defender of the Crown - Philips POV
Deja Vu - Icom Simulations
Deja Vu 2: Lost in Las Vegas - Icom Simulations
Demolition Man - Virgin Interactive Entertainment
Demon Driver - Haiku Studios
Discworld - Teeny Weeny Games
Dimo's Quest - SPC Vision
Domino - Wigant Interactive Media
Down in the Dumps - Haiku Studios
Dragon's Lair - Superclub / INTL CDI
Dragon's Lair 2- Time Warp - Superclub / INTL CDI
Drug wars - Crime Patrol II - CapDisc
Dungeons & Dragons - PF Magic
Earth Command - Visionary Media
Effacer - CapDisc
Escape from Cybercity - Fathom Pictures
Evidence - Microids
Falco & Donjon & The Sword of Inoxybur - BMi / Zephyr Studio
Family Games I - DIMA
Family Games II - Junk Food Jive - DIMA
Felix the Cat - Philips Sidewalk Studio
Flashback - Delphine/Tiertex (for US Gold)
Flinstones Wacky Inventions - Philips Funhouse
Fort Boyard: The Challenge - Microids
Frog Feast - Rastersoft

CD-i Games Index G-M

Go - CapDisc
Golden Oldies - SPC Vision
Golden Oldies II - SPC Vision
Golgo 13 - Japan Interactive Media
Great day at the races, A - CD-I Racing, Dove Films, Total Vision
Guignols de l'Info, Les - Canal+ Multimedia / INTL CDI
Heart of Darkness - Amazing Studio (for Virgin)
Hitchhiker's Guide to the Galaxy, The - Philips Kaleidoscope
Holland Casino CD-i - HMO
Hotel Mario - Philips Fantasy Factory
Inca - Coktel Vision
Inca 2 - Coktel Vision
International Tennis Open - Infogrames
Jack Sprite vs. The Crimson Ghost - PF Magic
Jeopardy - Accent Media
Jigsaw - Novalogic
Joe Guard - DIMA
John Dark: Psychic Eye - CapDisc
Joker's Wild!, The - Accent Media
Joker's Wild Jr., The - Accent Media
Kether - Infogrames
Kingdom - The far reaches - CapDisc
Kingdom 2 - Shadoan - CapDisc
Labyrinth of Crete - Philips Funhouse
Laser Lords - Spinnaker
Last Bounty Hunter, The - CapDisc
Legend of the Fort - Microids
Lemmings - DMA Design / Psygnosis
Lettergreep - Wigant Interactive Media
Lingo - SPC Vision
Link - The faces of evil - Animation Magic
Lion King, The - Virgin Interactive Entertainment
Litil Divil - Gremlin Graphics
Litil Divil 2: Limbo Years - Gremlin Graphics
Lords of the rising sun - Philips POV
Lost Eden - Cryo (for Virgin)
Lost Ride, The - Formula (Lost Boys)
Lucky Luke - The video game - SPC Vision
Mad Dog McCree - CapDisc
Mad Dog McCree II: The lost gold - CapDisc
Magic Eraser - Circle (for ZYX)
Mah-Jong - Japan Interactive Media
Making the Grade - 3T Productions
Man Before Man - Cryo
Marco Polo - Infogrames
Mario Takes America - CIGAM
Master Labyrinth - AVM AG/HQ
Mega Maze - CapDisc
Memory Works, The - Compact Disc Incorporated
Merlin's Apprentice - Philips Funhouse
Microcosm - Philips Freeland Studios
Micro Machines - Codemasters
Monty Python's Invasion from the Planet Skyron - Daedalus CD-i Productions
Mutant Rampage - Body Slam - Animation Magic
Myst - Sunsoft (for Cyan)
Mystic Midway - Rest in pieces - Philips POV
Mystic Midway 2 - Phantom Express - Philips POV

Compact Disc Interactive

Compact Disc Interactive

Games N-Z

Name that tune - Philips Fantasy Factory
New Day - Bits Corporation
NFL Hall of Fame Football - Philips POV
Othello - HMO
Pac Panic - Philips ADS / Namco
Palm Springs Open - ABC Sports / Fathom Pictures
Pool - SPC Vision
Pinball - CapDisc
Plunderball - ISG Productions
Power Hitter - ABC Sports / Fathom Pictures
Power Match - Two's Company
Pursue - BEPL
Pyramid Adventures - Compact Disc Incorporated
RAMRaid - PRL Redhill
Return To Cybercity - Fathom Pictures
Riddle of the Maze, The - Fathom Pictures
Riqa - Bits Corporation
Rise of the Robots - Mirage Technologies
Sargon Chess - Spinnaker
Scotland Yard Interactive - AVM AG/HQ
Secret Mission - Microids
Secret Name of Ra, The
Shaolin's Road - Infogrames
Skate Dude - Viridis
Smurfen, De - De Telesmurf - Infogrames
Solar Crusade - Infogrames
Solitaire - BEPL
Space Ace - Superclub / INTL CDI
Space Ranger - Studio Interactive
Special Operations Squadron - SPC Vision
Sport Freaks - SPC Vision
Star Trek - Philips POV
Star Wars: Rebel Assault - LucasArts
Steel Machine - SPC Vision
Striker Pro - Rage
Strip Poker Live - Greenpig Production
Strip Poker Pro - Interactive Pictures
Super Fighter - The Super Fighter Team / C&E
Super Mario's Wacky Worlds - NovaLogic
Surf City - Philips Sidewalk Studios
Tangram - Eaglevision Interactive Productions
Taco's Toyroom Troopers - Creative Media
Tankdoodle - Creative Media
Tetris - Philips POV
Tetsuo Gaiden - Creative Media
Text Tiles
Thieves' World - Electronic Arts
Tic-tac-toe - BEPL
Tox Runner - ISG Productions
Treasures of Oz - Philips Kaleidoscope
Ultra CD-i Soccer - Krisalis
Uncover featuring Tatjana - SPC Vision
Uninvited - Icom Simulations
Video Speedway - ISG Productions
Vinnie the Pinguin - Pandemonium Labs
Voyeur - Philips POV
Voyeur 2 - Philips POV
Whack-a-Bubble - Creative Media
What's it worth - Marshall Cavendish Multimedia / Spice
Who shot Johnny Rock? - CapDisc
Wordplay - BEPL
World Cup Golf - US Gold
Zaak Sam, De - Toneelschool NL
Zelda - The wand of Gamelon - Animation Magic
Zelda's Adventure - Viridis
Zenith - Radarsoft
Zombie Dinos From The Planet Zeltoid - Philips POV

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