Star Wars non responsive

[GameyMcGame]

Ok, here are the voltages...

At the brick:

1-3: 13V
6-7: 17.1V each = 34V total
8+9: 5.4
10+11: 23v total
15: 45V

At the ARII board everything seems pretty good ( -/+5 are solid) BUT there is no 36V...

At the AVG PCB, everything seems good except nothing at +12

 

[RetroHacker]

36v is an input to the AR-II. But, since you have already verified you're getting it at pins 6 and 7 of the power brick connector, that means it's making it past the fuses (F4 and F5). So, basically, there's something wrong between the power brick connector and the AR-II board.

-Ian

 

[channelmanic]

Look for broken wires, poor connections, or cracked solder joints on the AR board. Broken solder on those pins in the connectors on the AR board is a common issue.

 

[GameyMcGame]

Will check. Thanks guys.

 

[GameyMcGame]

Jeez. You guys are going to kill me. I pulled the ARII, checked the pins and didnt see anything that 'looked' like a bad/cold joint.

I checked the power brick again and I am not getting anything out of PIN 6. I must have written it down wrong. Pin 7 I get 17V though...

 

[RetroHacker]

I checked the power brick again and I am not getting anything out of PIN 6. I must have written it down wrong. Pin 7 I get 17V though...

Is F4 blown? Bad fuse holder? Burned spade connector?

-Ian

 

[GameyMcGame]

Is there a way to check for a bad fuse holder? Will check fuses again tonight...THANKS!

 

[dezbaz]

Did you start checking your power from the brick first.
Here is a video that was from a tempest. It is the same for Star Wars
http://www.youtube.com/watch?v=C1pVTzEF3ZA

Great Video, thanks for sharing. A picture paints a thousand words

 

[GameyMcGame]

OK, looks like a fuse was bad...Changed it and am now getting ~17 at both 6 and 7. At the ARII board though I am only getting 17 at the 36 terminal...

 

[ELutz]

At the ARII board though I am only getting 17 at the 36 terminal...

That's normal. You're measuring AC volts with reference to Ground....so, you're only reading one pole (or half the wave). 17 plus 17 equals 34....close enough.

Edward

 

[GameyMcGame]

CRAP! Thought I found the issue...

Ok, well, back to the monitor then I guess.

Can anyone walk me through how to start checking the monitor? Again, I'm getting activity diagonally...When my deflection has gone on other vectors it collapses and leaves on side working with a line down the center. Or if both collapse, just a single line or dot.

This seems strange since its diagonal...