Asteriods Deluxe Wireing help

starfighter2

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I am taking another look at my asteroids deluxe monitor display issue and thought I would start from scratch. I read a couple of articles and post about the voltages needed to goto the monitor via P100 and noticed very strange readings(I will post later, mesurments taken in test mode as articles suggested). I got this cab from someone else that could not fix it and so I am concirned that the wireing in not correct. So I would like to see if anyone has a diagram/article as to where the wires to p100 (to the monitor) come from. I know that they come from the board and the power block but from what pins to what pins? The monitor is a G05-802 version 5 board.

Second I did not see any 30 volts to P100 but the game seems to play blind. Wanted to find out what may be causing that?

The board seems to have the correct X and Y volts Z is 2 volts instead of the .9XX volts which others seemed to indicate that that would only increase the brighness.

Thanks in advance for any help.
 
30

The 30 volts is for the monitor. If you dont have the 30V, the game will play blind but no display. That is the issue you should resolve first. The 30V (there is 2 legs of it) comes from the power brick.
 
I can see in the PDF FAQ and G05 monitor handbooks that I need the 30 volts and to what pins need the 30 volts. But I am not sure of the source (pins on the power brick to test) and not sure if I am not getting the 30 volts why? any thoughts? I did run a coninuity test from P100 to the power brick and can see where the current cabling is going but want to validate that it is correct.
 
30v

The wire colors will be the same at p100 as the connector on the power brick out put. I do not know the pin numbers and Dokert is on vacation.
 
Chances are the power brick prob has a blown fuse. Here's how to fix 90% of Asteroids monitor woes...

Remove deflection board

Resolder EVERY pin of every plug on the board - they are ALL prone to breaking and when they do tend to cause blown fuses, etc. There's not a ton so it shouldn't take too long.

Check R100 and R101 - the two giant resistors (if they're there - your rev 5 board may not have em). If one is really burnt, chances are the other is dead. If so remove them both and just solder some heavy wire across each one - its a factory mod and the resisters aren't needed.

Check ALL the fuses, both on the deflection board and the power brick. The monitor actually takes a center-tapped 60v (30volts x 2), but I've seen one fuse blow and the monitor still work. Also note that the heater for the pic tube actually comes from the power brick, so if you're not getting neck glow that fuse needs to be checked/cleaned as well.

Reassemble and have fun!
 
The schematic I have (avaliable from http://pdf.textfiles.com/manuals/ARCADE/A-J/) indicates that there are two 60 VAC center-tapped secondaries in the transformer. One has brown, gray/brown, brown/white wires and goes to pins 10,11,12 of J5 on the power block, the other has blue, gray/blue, blue/white wires and goes to pins 13,14,15 of J5. Those two triplets are tied together in the wiring harness (with 2 brown and 1 gray wire) and go to pins 7, 8, and 10 of P22, the 12-position connector that carries all the power and signal lines to the monitor. IIRC (this part isn't in the schematic) that connector is attached to the monitor frame and breaks out from there to P100 and other assorted connectors on the monitor boards.

These schematics don't show any fuses on the 60 VAC lines at the power block. So, if you don't have 60 VAC measured between pins 10/12 or pins 13/15, your transformer must be bad. This is pretty unlikely - I think the things orion3311 mentioned are more likely your problem.
 
Thanks these schmatics are excatcly what I was looking for. In the G05 monitor it indicates the input of 30 VAC for two pins in P100 but you had indicated that the power brick is sending out 60VAC. does it get converted somewhere down to 30VAC?
 
I believe the center tap is grounded at P100 on the monitor chassis, so the other two lines will each read as 30 VAC with reference to ground, which is what the regulator section needs in order to provide +/-25 VDC.
 
I was able to test (correctly this time) the AR and was able to get the 30 volts correctly. But I am a little confused an hope you all can help.

1. In the Asteroids Deluxe manual it has a pitcure of the molex pin out in the exploeded view 19" monitor page that does not appear to match the Asteroids Deluxe wireing diagram 036687-01 of the srawing supplemental pdf document

2. The following is what the pin outs look like in my cab. This does not seem to match the drawing suplimental and am looking to see if another esle thinks this is incorrect and why it might be wired this way?
Also should I try to fix it or just get another wire harness?

P100 wire from pcb/ARII Game Board ARII
pin 1 pin 17
pin 2 pin 18
pin 3 pin K
pin 4 pin Q
pin 5 pin R
pin 6 pin 11
pin 7 pin 8
pin 8 pin 11 and pin 14
pin 9 pin 12 and pin 15
pin 10 pin 7
pin 11 ground
pin 12 pin 10 and pin 13

P100 diagram AR Diagram
1 4 7 10 1 4 7 10 13
2 5 8 11 2 5 8 11 14
3 6 9 12 3 6 9 12 15
 
Ok after much carful review of the documents I have P100 back the way it should. however, I still get a spot killer on the monitor. I dont beleive it to be a monitor issue however. I want to be sure. I get 30 volts at the correct places on P100. How do I test x/y/Z outputs from P100. if I do what the FAQ suggests. (i.e. put black prob in socket 8 nad test 1, 2, 3 pin I get zero) which suggest the board is bad. If I test on the board ground clip on board and y out I get a dancing ~4 volts and z i get about 2 volts (which seems ok) and about 2 volts crancked on the xout. Any thoughts would be great. thanks
 
If you're seeing some signals on the board but nothing at P100, there has to be something wrong in the wiring harness. I'd check continuity between the test points on the board and the pins on P100. If I'm reading everything right, pin 1 should be Z, pin 2 Y, and pin 3 X. They should be connected to M, 18, and 17 on the PCB.
 
That is correct. That is what I get with the coninuity test. However the voltages seem to be off. In another thread I had seen that this might be caused by a bad DAC (AM6012ADC). That both the X and Y voltages are suppose to be fluxuating. is that true? I don;t have a logic probe to test the DAC. Anyone have thoughts on this? or any other ideas on why the voltage may look of and what to test?
Thanks
 
I have to ask the very stupid quest to confirm what I found. the wires from the molex side of the deflection board do not match what is printed on the PCB. Shouldn't they?

example pin 10 on the molex is connected to 11 on the board. I want to check before I clean it up and move the wires back to where the board is indicating.
 
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I have to ask the very stupid quest to confirm what I found. the wires from the molex side of the deflection board do not match what is printed on the PCB. Shouldn't they?

You'd think so, but no! they had to make it extra confusing.

According to the manual (also available at http://pdf.textfiles.com/manuals/ARCADE/A-J/):

Molex pin / PCB pin
1 / 5
2 / 3
3 / 1
4 / 8
5 / 4
6 / 2
7 / 10
8 / 6
9 / 11
10 / 7
11 / 9
12 / 12
 
So I made some progress, but still have some issues. The spot light killer is now off, I have the tube guns fireing and can see a glow in the neck tube. Also hear a hum from the monitor. However, There is no video. I tried to change the contrast and brightness on the deflection board but there was no change.

Looking for suggestions on what and how to test next. Thanks
 
If the spot killer is off, you can hear deflection chatter, and you have neck glow, but still no video, you could have a problem in the high voltage section.
 
That was my thought as well, but how whould I verify that. I know what I would do on a CGa monitor but this is the first time I've worked on one of these x/y monitors
 
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