Asteroids Repair

WarLordAG

Active member
Joined
Feb 11, 2007
Messages
1,070
Reaction score
9
Location
Newark, Ohio
I picked up an asteroids that was not working, if you read my previous thread, here are a couple pictures, including one of the back.

CIMG2048.jpg


CIMG2051.jpg



I finally got around to checking some voltages last night. The board is getting 5.01 in each spot where there should be 5 volts.

When I turn the machine on, I'm getting both start lights solid, and the light on the PCB is lit. Spot killer is not on. I took out the PCB, and started going over it and taking out the socketed chips. There was some definite corrosion and a few legs had even broke off of some chips. That solves my question as to whether or not the board is good or bad.

My monitor is glowing. However, when the board was removed I fired up the game to see if that spot killer light came on on the deflection board, and it did not. It is my understanding that it should have, since there was no board feeding it a signal.
The monitor is a G05-802.

Where do I go from here to continue to troubleshoot this monitor? I want to have it for sure working by the time a game board arrives that is known working. This is my first vector.
 
G05

It is hard to diagnose a monitor without a known good board. The 3 socketed chips on the left hand side will take out the video in game play. If you monitor is not getting power, the spot killer will not be on. On those monitors usually you start with a cap kit and reflow all the headder pins on the deflection and HV pcb and replace the chassis mounted transistors to start with and go from there.

If the monitor has no pic after you verify the voltages and you hear deflection chatter. Most likely it is a problem in the HV section. If you have no chatter but you here the monitor fire up with the spot killer on. It is in the deflection PCB. (usual monitor crackling noise) The neck glow you are seeing is powered by a totaly seperate wire that comes from the power brick. It is 6.3v AC It also powers the coin lights.

It is odd to see your Willis overlay Asteroids. I have not seen one with that CPO in a long time and I got 2 of them last week. I got both of mine running and for sale now. One had board and monitor issues and the other was Just a monitor issue.


Nice one
http://indianapolis.craigslist.org/vgm/1683899479.html

Not as nice but it is the early version.
http://cgi.ebay.com/Asteroids-by-At...emQQptZLH_DefaultDomain_0?hash=item3a59aa18d6
 
It is odd to see your Willis overlay Asteroids. I have not seen one with that CPO in a long time and I got 2 of them last week.

Yeah, I had to check the location because I fixed one a month ago with the same overlay:

Photo-0022.jpg
 
If you monitor is not getting power, the spot killer will not be on.

I agree on the cap kit, taking out the deflection PCB might yield some broken solder traces or cold solder joints. Especially on the header pins for the connectors. That might be why your not seeing the spot killer LED come on. Maybe the LED isn't even there in the board, might want to check that.

Sounds like he is getting at least some voltage to the tube, since there is some glow. I haven't seen the flyback go bad on one of these, I have only seen the HV diode go.
 
So what do you suggest ordering other than I guess the full cap kit with xy stuff? Hopefully all from Bob.

The previous owner says he just replace this deflection pcb, and it does look new. I'll post some pics of it tonight.
 
Parts

I would start with the BR rebuild kit. The hv diode can go either way. When it is starting to fail, it will cause blooming. I have not had one be bad all together but I have read it will cause it not to have a picture. Makes sense. It is in the anode wire. Caps and chassis transistors and reflow the solder on the headder pins and it should be up and running. If not. At least you have a good baseline to go from to start diagnosing. I think Bob is out of the HV diodes by the way.
 
Do I need to look at the schematics to figure out which transistors to order? Is there a listing somewhere?

I'm going my order with bob this afternoon. Who has the uv diode if bob is out?
 
personally, I would order a big blue cap, a monitor cap kit with transistors, and a AR rebuild kit all from Bob Roberts. Maybe a new Atari power cord too if it needs it, he sells them. Worry about the diode later.

Edit. You could order the filter caps too. Wouldn't hurt.
 
Do I need to look at the schematics to figure out which transistors to order? Is there a listing somewhere?

I'm going my order with bob this afternoon. Who has the uv diode if bob is out?

The transistors I am talking about are the 4 chassis mounted ones that are included in the kit. No need to llok rhem up. There some on the HV and the Deflection pcb that also come in thekit. If you are new to vectors it is best to replace all the kit parts then go from there. Probably all you will need to do.

The hv diode is a h1809 for that one I believe, There are a few different ones, so make sure to check the number that is clearly printed on your old one to get the same one. I am not sure if the other ones that are available are interchangeable.

The last ones I got was from either arcadeshop or mikesarcade. I think they were 15$ each. You only need one per monitor. I tried to get some from a few electronics distrubters but it is no longer in production and I could not (even with digikey and mouser looking) could not find a spec sheet to find a suitable replacement.
 
I"m assuming it's a 19" monitor., though it could be 15"-ish. Anyone know for sure?
Does this from Bob include all I should need then:?

GO5-802 19" B&W X-Y w xsistors

Edit:
I just sent bob an email, stating I needed a big blue cap, a monitor cap kit with transistors, and a AR rebuild kit, all for an asteroids with a G05-802
 
Last edited:
Mjenks has one on the way to me.
Looking for that to be here Monday, so we'll see if she plays blind.
 
without going back and reading it all, did you check all your fuses ? You need to check the ones on the deflection board and in the bottom of the game. Make sure they are all correct. Also make sure the ones in the bottom of the game are not corroded. Take them out and check them.
 
Monitor

Yours is a GO5 802. The brownish deflection board gives it away. 19v2000 is an off white color. Your monitor is 19". You ordered the right kit.
 
Fuses

If the f100 and f101 fuses are blown go ahead and pick up a bridge rectifier for the power brick from Bob while you are at it.
 
I am at work right now but when I get home I'll get the pictures of that deflection board and go over the fuses to make sure they're good,and the right ones.
 
Pulled the deflection board out. I tested all fuses with my meter, and all were good except for the 1 amp fuse at F102. All above stated parts are on the way from bob, and I'm assuming will be here Wednesday.

CIMG2055.jpg


CIMG2056.jpg
 
Back
Top Bottom