Question about swapping monitors

jehuie

Well-known member

Donor 2011
Joined
Sep 8, 2007
Messages
10,947
Reaction score
1,672
Location
Martinez, California
Two questions actually. I've just removed a G07 monitor from a Centipede game because it has bad screen burn. I'm putting a nice Sanyo EZY monitor in it's place.

Question 1: The Sanyo manual has the following pinout: 1=green, 2=red, 3=blue, 4=gnd, 5=gnd, 6=Neg composite sync. The Centipede manual has pin 1=Horz Sync, 2=Vert Sync, 3= Vid Ret, 4=Blue, 5=Green, 6=Red ----so, how do I connect the composite sync monitor to the Centipede which has separate Horz/Vert sync? And what the heck is "Vid Ret"?

Question 2: What's the best way to modify the connectors to switch these? Should I just cut them and solder/shrink-wrap the wires to recreate the cable?

Thanks!
 
And another thing...the actual cable coming from the Sanyo monitor only has 5 pins in the 6 pin connector so it doesn't jive with the manual. And all the wires are white making deciphering them tricky for a relative noob like me. Is this standard?
 
I would save that ez20 for a nintendo cab or trade it with someone local for a replacement.
 
Two questions actually. I've just removed a G07 monitor from a Centipede game because it has bad screen burn. I'm putting a nice Sanyo EZY monitor in it's place.

Question 1: The Sanyo manual has the following pinout: 1=green, 2=red, 3=blue, 4=gnd, 5=gnd, 6=Neg composite sync. The Centipede manual has pin 1=Horz Sync, 2=Vert Sync, 3= Vid Ret, 4=Blue, 5=Green, 6=Red ----so, how do I connect the composite sync monitor to the Centipede which has separate Horz/Vert sync? And what the heck is "Vid Ret"?

Question 2: What's the best way to modify the connectors to switch these? Should I just cut them and solder/shrink-wrap the wires to recreate the cable?

Thanks!

Did you mean EZV or 20EZ?

If so, the Power input for that monitor is 100V and not 120V. Plugging it into another cab could have very bad results.
 
Did you mean EZV or 20EZ?

If so, the Power input for that monitor is 100V and not 120V. Plugging it into another cab could have very bad results.

It's a 20EZ. I pulled it out of another Atari game (A Mr.Do's Castle in an old Kangaroo cab).

But that answers a big part of my question....apparently I was confusing the manuals and looking at the wrong one. I found another one and this one has the same pinouts...good deal! Although I still can't tell which is which since they are all white. When looking at the 6 pin (2 rows of 3) molex connector, which is pin 1?
 
Last edited:
I see this thread is getting confusing.....let's get a few things straight...

Sanyo EZV was used by Nintendo, it's a 100 volt monitor, and uses inverted video.

Sanyo EZY was used by Atari, it's a 120 volt monitor, and uses non-inverted video.

These two chassis look almost identical with a few subtle differences (power supply circuit, and video output circuit).

jehuie, you only need 5 wires in the six pin video connector. There's two ground wires, which is redundant.....you only need one.

Centipede outputs separate positive horizontal and positive vertical sync. The EZY chassis only accepts composite negative. The EZY chassis WILL NOT sync up with a Centipede (at least, not without some hackery).

Edward
 
. The EZY chassis WILL NOT sync up with a Centipede (at least, not without some hackery).

Edward

Well this is extremely disappointing since the original Centipede monitor has extreme screen burn and a broken neck board. So...how much hackery would be required to make this work? I love this Sanyo monitor....it looks soooo nice.
 
Well this is extremely disappointing since the original Centipede monitor has extreme screen burn and a broken neck board. So...how much hackery would be required to make this work? I love this Sanyo monitor....it looks soooo nice.

Well, let me dig up some schematics......if I'm not mistaken, the Centipede motherboard (actually) has a negative composite sync output.....it's just not wired up that way. So, you'd have to add it into the wiring harness.....and not use the two separate positive sync wires.


Here you go....pin 12 of the 24-pin edge connector.

Edward
 
Sanyo EZY was used by Atari, it's a 120 volt monitor, and uses non-inverted video.

Do you have a Manual for this? This seems to be one of the few I don't have.

It also appears that Atari used the EZV monitor as the manuals I have for the EZV are from Atari.
 
Well, let me dig up some schematics......if I'm not mistaken, the Centipede motherboard (actually) has a negative composite sync output.....it's just not wired up that way. So, you'd have to add it into the wiring harness.....and not use the two separate positive sync wires.


Here you go....pin 12 of the 24-pin edge connector.

Edward

It's amazing what some of you guys know and can find quickly! Thanks...good info! Ok so all I need to do is clip off the old connector on the the Centipede cab and wire in a new connector that I can plug onto the Sanyo monitor right? The power is the same and it's safe to plug this thing in? yes?

Here's a pic of the Sanyo plug. How do I tell which of these is which? They are numbered on the schematic but where do I start counting from? Is the top left one pin 1? Or do I rotate it around 180 degrees? I don't get it! :)

And lastly....I don't see a "ground" pin on the Centipede connector. Is that what the "Vid Ret" pin is?

Rep for eveyone who has helped so far! I could probably figure all this out eventually but you guys make it so much easier!

attachment.php
 

Attachments

  • IMG_0848 (Medium).jpg
    IMG_0848 (Medium).jpg
    97.1 KB · Views: 99
Last edited:
Yesssss! It works...and looks great other than having an upside down picture! Thanks guys. I guess it's time to break out the saws-all right? :)

And for the record books, the pins in the molex connector are as follows:

Looking at my pic: the top left pin is Red, middle left is Green, bottom left is blue, the top right is ground, the middle right is composite sync and the bottom right is, obviously, unused.

attachment.php
 
Ok I flipped the yoke wires and now it looks perfect. Thanks again! Now to adapt the other monitor to go back in my clunker Mr. Do cab..... :)
 
Do you have a Manual for this? This seems to be one of the few I don't have.

It also appears that Atari used the EZV monitor as the manuals I have for the EZV are from Atari.

I've never seen a manual for it. The first time I saw one, it was in a Dig Dug. I thought it was odd, and someone had done some hackery to make it work. The Dig Dug came into the shop for repair (bad power supply)....the monitor worked, so I didn't dig too deep into it.....if it's not broke, don't fix it...so to say. Next was another Dig Dug....came into the shop for repair. Another damn Sanyo! I figured not a coincidence....plus all the Atari serial numbers matched.....including the monitor. This one I pulled and gave a good going over. The easiest way to tell the difference is the filter cap. On a Sanyo EZV, the filter cap is 470µf160 volts......on a EZY, it's 330µf 200 volts.

You know, I've got an Atari Sanyo EZV manual too.......I don't recall ever seeing an EZV monitor in an Atari machine.

For the record....I've only ever seen 3 EZY's.....all (oddly enough) were in Dig Dug games.

Edward
 
For the record....I've only ever seen 3 EZY's.....all (oddly enough) were in Dig Dug games.

Edward

Well this one was in a Kangaroo that was then converted to a Mr. Do's Castle but has now been moved and is living happily in a Centipede. :)
 
I've never seen a manual for it. The first time I saw one, it was in a Dig Dug. I thought it was odd, and someone had done some hackery to make it work. The Dig Dug came into the shop for repair (bad power supply)....the monitor worked, so I didn't dig too deep into it.....if it's not broke, don't fix it...so to say. Next was another Dig Dug....came into the shop for repair. Another damn Sanyo! I figured not a coincidence....plus all the Atari serial numbers matched.....including the monitor. This one I pulled and gave a good going over. The easiest way to tell the difference is the filter cap. On a Sanyo EZV, the filter cap is 470µf160 volts......on a EZY, it's 330µf 200 volts.

You know, I've got an Atari Sanyo EZV manual too.......I don't recall ever seeing an EZV monitor in an Atari machine.

For the record....I've only ever seen 3 EZY's.....all (oddly enough) were in Dig Dug games.

Edward

Cool, thanks for the info. Good to know cause I would have probably blown up an EZY :D
 
Back
Top Bottom