I recently purchased a lovely Outrun 2 SP from muddymusic which takes pride of place in my games room.
The Achilles heel of the Outrun 2 SP is the battery pack that saves high score and game adjustments
I checked the voltage and the news was not good, 0 volts. New battery packs are available from Sega but at the cost of £150+ which is not really an option. With a new Sega battery pack installed you have around 72 hours with the game switched off before it goes flat which would not work in my games room. So I found a diagram on a forum ‘arcade-museum.com’ which detailed a battery backup system for Sega Chihiro game board.
Following the diagram the parts were purchased from EBay and promptly assembled and tested.
The system can switch from mains supply to battery back-up seamlessly.
I managed to fit the wiring though an unused plug on the side of the Chihiro unit without having to modify the case
To prevent the Chihiro board trying to charge the new battery backup system I soldered a blocking diode into a fuse holder.
Checked the voltages from battery to voltage regulator
From mains supply
And output remained static at 7.1 volts
There is a feature on the regulator board that when you are happy with the voltages you can switch off the display to save power
A great bonus what I was not expecting was that the media board now holds the game download and no longer reloads the game every time its switched on
(this video takes time to download scroll down)
I tested the system for 4 days before fitting it to the game, I plan on putting the charging system on a timer to charge for 1 hour every two days
I would be interested in anyone’s thoughts good or bad as I am most certainly not an electrical engineer
Cheers Les
The Achilles heel of the Outrun 2 SP is the battery pack that saves high score and game adjustments
I checked the voltage and the news was not good, 0 volts. New battery packs are available from Sega but at the cost of £150+ which is not really an option. With a new Sega battery pack installed you have around 72 hours with the game switched off before it goes flat which would not work in my games room. So I found a diagram on a forum ‘arcade-museum.com’ which detailed a battery backup system for Sega Chihiro game board.
Following the diagram the parts were purchased from EBay and promptly assembled and tested.
The system can switch from mains supply to battery back-up seamlessly.
I managed to fit the wiring though an unused plug on the side of the Chihiro unit without having to modify the case
To prevent the Chihiro board trying to charge the new battery backup system I soldered a blocking diode into a fuse holder.
Checked the voltages from battery to voltage regulator
From mains supply
And output remained static at 7.1 volts
There is a feature on the regulator board that when you are happy with the voltages you can switch off the display to save power
A great bonus what I was not expecting was that the media board now holds the game download and no longer reloads the game every time its switched on
(this video takes time to download scroll down)
I tested the system for 4 days before fitting it to the game, I plan on putting the charging system on a timer to charge for 1 hour every two days
I would be interested in anyone’s thoughts good or bad as I am most certainly not an electrical engineer
Cheers Les
