Subelectro Help

[Retromanic2]

Hi everyone,
Have been following Equites Asteroids Repair Thread inspired me to look at my Subelectro Clone,
(Well I think it is)
History:Located in a farm out building open to the elements stored for 6-7years.
Has suffered from water damage various exploded patches on the cab no back door.
Previous in guys home,before that purchased at a Devon auction for 20£.

So on initial inspection board damage extensive much crap all over board ,all electolitics shot,replaced these and cleaned board.

Managed to power up but sounds like Space Invaders...
No X Y Z outputs.

Main concern is 15% of Information lost from components on the board,so does anyone have a Subelectro Asteroids board.

I need some info on a damaged chip...or replacement board.

 

[trm]

Hiya.

Definitely good quality board pics, PSU and anything else which looks important required to help ID and provide advice. Not so bothered about the CRT chassis yet.

It'll either prompt somebody into saying "I've got one of those" or somebody else spotting that it's 99% identical to another Asty board, hopefully leading you to schematics.

Good luck!

 

[Retromanic2]

Located my camera lead at last,so managed to get a shot of the Board.

 

[Retromanic2]

The Board looks very similar to an Atari Asteroids Deluxe,so hoping this is the case,as I then might be able to use part of the schematic set .
Anyone agree!!!

 

[Equites]

That looks like an Asteroids PCB alright, you will be able to refer to Atari schemes for this. Both Asteroids and Asteroids Deluxe are very similiar in hardware, notable difference is that Deluxe employs a Pokey chip to handle sound as opposed to analog circuits used on the original Asteroids.

Looks like your RAMs are socketed which is handy.

Have you tried to power up this PCB yet? Any life? A scope? Checked voltages?

A picture of the cab and PSU would help also.
Equites2011-06-14 12:42:44

 

[Retromanic2]

No Pokey chip found,only 40 pin chip is the Processor 6502a.

I have powered up just get around 8 tones then a change in pitch.
Now that I might be able to use Atari schemes I can check VR2,VR3,VR4 Regulators as there is no X an Y output and the information is missing off them.

No pics of cab and PSU at the moment as its 90 miles away in storage.

 

[Macro]

I have a subelectro PCB in my (spare) asteroids cab - looks nothing like that - may have to do a picture one day.

I would say that is a direct copy of an Atari Asteroids (not deluxe - hence no pokey)

 

[Equites]

No Pokey chip found,only 40 pin chip is the Processor 6502a.

I have powered up just get around 8 tones then a change in pitch.
Now that I might be able to use Atari schemes I can check VR2,VR3,VR4 Regulators as there is no X an Y output and the information is missing off them.

No pics of cab and PSU at the moment as its 90 miles away in storage.

Get yourself a copy of the schemes here;

http://www.ionpool.net/arcade/asteroidtech/asteroidsrepair.html

Some good tips here too.

The tones you are getting indicate a bad RAM (if the PCB is in TEST mode?) - sounds like a bad vector RAM.

 

[system11]

There are quite a few clones of Asteroids, my Alca Planet had something that looked nearly identical to an Atari one. It was dead so I put a real Atari board in, job done

So how badly damaged is the cab?

 

[guddler]

I have a subelectro PCB in my (spare) asteroids cab - looks nothing like that

That definitely is one though, it's screened onto the PCB just below the CPU. It's a bit different to the other one I've seen that had "Subelectro Ltd" screened on it too. Interesting that there's so many variants out there.

 

[Alpha1]

I have the exact same Subelectro Asteroids board as you have posted with the picture. It's untested but in good condition. £30 posted.

Alpha12011-06-14 16:40:57

 

[tymawrcymru]

I have the exact same Subelectro Asteroids board as you have posted with the picture. It's untested but in good condition. £30 posted.

Is there anything you dont own

?

ME ? Just Jealous

 

[Retromanic2]

Guddler How did you manage to spot that? It says Subelectro Ltd 045 Iss 3
God dam camera is so old..
Focus is so poor...

 

[Retromanic2]

Bloodflowers, Cab is made from chipboard laminated with woodgrain effect,areas which have been water damaged have exploded.So unsure at the moment what course of repair would be most effective.
I suppose in total its about 10%.

 

[Retromanic2]

Alpha1 PM sent.

 

[Alpha1]

Cool. I'll get a pic taken.