Super Monaco GP Airdrive
- Thread starter sega_man
- Start date
RedFighter
Student
a PAL is a Programmable Array Logic, even if the component has the same number,
each IC has its own logic programmed, so do not mix up the position, otherwise the CPU will not start
each IC has its own logic programmed, so do not mix up the position, otherwise the CPU will not start
One chip did have a different number, anyway, more progress! It was still dead, I touched a ROM and it started to boot.....
No track
I went into the games own test mode......
IC108!! I pushed down on it.......
Yay! So I'll re-flow 108, then it on to testing the sound and inputs....oh...and the airdrive! Long way to go yet but at least I have something to show for all the work now
I haven't forgotten about those airdrive measurements you want RedFighter, juts my garage is a right mess with all of this and the back of the cab is against a wall at the moment 
No track
I went into the games own test mode......IC108!! I pushed down on it.......
Yay! So I'll re-flow 108, then it on to testing the sound and inputs....oh...and the airdrive! Long way to go yet but at least I have something to show for all the work now
I haven't forgotten about those airdrive measurements you want RedFighter, juts my garage is a right mess with all of this and the back of the cab is against a wall at the moment
RedFighter
Student
Yeahhh !!
at the moment it doesn't look bad with your board, you'll manage it.
yes the dimensions and some pictures would be great, i want to continue with the airdrive components next...
at the moment it doesn't look bad with your board, you'll manage it.
yes the dimensions and some pictures would be great, i want to continue with the airdrive components next...
OK, I've re-flowed 108, the sound board is back on. I've got sound and the game runs. I've got no steering input or pedals I'm hoping rodent damage to the wiring somewhere....if not another board fault to find & fix!
I'm hoping rodent damage to the wiring somewhere....if not another board fault to find & fix!
Mrhide
Legendary
You are officially nominated for stubborn bastard of the year 
I wish we could have seen your smile when the road appeared !
I wish we could have seen your smile when the road appeared !
Haha! I was VERY HAPPY. Then down.... then up again!! It's not over but I think it can be done. I couldn't have done this without the help on here and others that have helped via email. I didn't think I'd ever see the start screen again!!!
Gamesmonkey
Professional
OK, I've re-flowed 108, the sound board is back on. I've got sound and the game runs. I've got no steering input or pedals
Superb work looks great, the steering and pedals could just be bad pots?
Cheers Justin
Gamesmonkey
Professional
Go @Gamesmonkey Go!
RedFighter
Student
@Gamesmonkey
ohhh what is that weird dirt on the board?
I look forward to your repair report.
My board was rotted too, here you can see some pics of it.
ohhh what is that weird dirt on the board?
I look forward to your repair report.
My board was rotted too, here you can see some pics of it.
RedFighter
Student
@sega_man
First I would measure the supply voltage at the potentiometers for the steering, gas and brakes.
There should be GND and +5V on the outer pins of the potentiometer.
If that works, check out IC166, a 74HC4051 analog multiplexer. The analog signals go straight to this IC.
Possibly check the lines up to the pins, maybe something is smoked there or the line is broken.
First I would measure the supply voltage at the potentiometers for the steering, gas and brakes.
There should be GND and +5V on the outer pins of the potentiometer.
If that works, check out IC166, a 74HC4051 analog multiplexer. The analog signals go straight to this IC.
Possibly check the lines up to the pins, maybe something is smoked there or the line is broken.
Thanks @RedFighter @Gamesmonkey what game is it? Please keep this thread updated. We may be able to help each other again!
Gamesmonkey
Professional
It looks worse than it is I took the photo just after spraying some alcohol to start cleaning it down.@Gamesmonkey
ohhh what is that weird dirt on the board?
I look forward to your repair report.
My board was rotted too, here you can see some pics of it.
Mine is like yours all the EPROMs have bad corrosion on the legs but the PCB appears to be in good condition
Here's how it's looking now. Sockets and EPROMs were removed waiting for more parts to arrive.
This is from my ThunderBlade DLX.
RedFighter
Student
@Gamesmonkey
cool, you have a Thunderblade Deluxe cab.
the board looks better in the last pictures, I see you also had to desolder all the sockets.
That's over 1000 solder points, I know.
I hope your board will work soon.
cool, you have a Thunderblade Deluxe cab.
the board looks better in the last pictures, I see you also had to desolder all the sockets.
That's over 1000 solder points, I know.
I hope your board will work soon.
Gamesmonkey
Professional
Thanks, can I ask where to got your replacement capacitors from please.?
