Dragon's Lair Fans - Arcade Lifestyle

General Chat => Technical Area => Topic started by: arcadefever on January 30, 2007, 06:42:06 AM

Title: rebuilding, asteroids audio/regulator board
Post by: arcadefever on January 30, 2007, 06:42:06 AM

I decided to rebuild my asteroids audio/regulator board. This is very important to do , most of the components have been inside sins 1979...

before starting, just wan say a big THANKS to "Mr PINX"  for is help and sharing knowledge ....


First let's take a look at what we need to change....


in yellow: this is the transistor part 2N3055

in dark blue: transistor part 2N6107

in white : 3 capacitor 470uf 25v

in green : 2 capacitor  33000uf 35v and 1 1000uf 25v

in red: 2 capacitor 10uf 35v

and in clear blue  2 transistor 2n3904

(http://www.arcadefever.net/MYPROJECT/asteroids-psu/4.JPG)

here is where I keep all the spair parts...

(http://www.arcadefever.net/MYPROJECT/asteroids-psu/5.JPG)

best tool to use is a desoldering iron....i recomand to practive on dead boards just to be safe and to get you use to it ...

(http://www.arcadefever.net/MYPROJECT/asteroids-psu/6.JPG)

here are al the components removed...always good to take a picture before taking them out, to remember where to put the new ones...

(http://www.arcadefever.net/MYPROJECT/asteroids-psu/7.JPG)

here is the board with all all components removed

(http://www.arcadefever.net/MYPROJECT/asteroids-psu/8.JPG)

each new capacitors, are place on the board, BECAREFULL !!!! to fallow there polarity...

most capacitor show you where the ( - ) negative is flowing ...this is very important ...look where the (+) is indicated on the board.


when place...just solder it, and cut the excess wire...

(http://www.arcadefever.net/MYPROJECT/asteroids-psu/9.JPG)

here is the board finish ...all capacitors and transistors in place ...

(http://www.arcadefever.net/MYPROJECT/asteroids-psu/10.JPG)

here a better picture ...look at the arrows showing you the minus polarity on the capacitors...


attached to the heatsink on the right the last 2 component are "amp" for the audio sound...

you can replace them with parts:  TDA2002.

(http://www.arcadefever.net/MYPROJECT/asteroids-psu/11.JPG)

This is one of the 2   (2N3904) transistors to change ....(in black)

(http://www.arcadefever.net/MYPROJECT/asteroids-psu/12.JPG)

when power on, voltage need to bee check and adjust...+5 is done via the molex on the pcb...

if you have any questions, or ....if you need any of this parts, contact me ...

and if you don't feel comfortable, I can also repair it for you ....



happy gaming ...


ps: same thing can be done for tempest, and star wars audio board...
and on many ATARI games

Title: Re: rebuilding, asteroids audio/regulator board
Post by: DarthNuno on January 30, 2007, 09:37:23 PM

Thanks for that great tuto ArcadeFever :o

It'll be very usefull... coz' this AR is present inside a lot of cab we all love : Xevious, Pole Position, Star Wars...

Quote from: "arcadefever"

if you have any questions, or ....if you need any of this parts, contact me ...

and if you don't feel comfortable, I can also repair it for you ....

You're great  :o