No ISO....F*%*K ME!

eh97ac

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Just picked up a new Robotron Cab for my Multi Williams project. The monitor looks to be a K7000 and it has a great picture.

I started cleaning things out and noticed the power cord is splice to the switcher (red) and monitor (purple).

I have the original power system. Other than wiring it back up properly, is there anything I should be worried about?
 

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I'd get a new power cord since it looks like yours has no ground. Hard to tell from the pictures.
 
Monitor

If the monitor has been powered up with no ISO. You have a lot of diodes to replace. But. I believe there are some newer 7000s that do not require an externan ISO. Similar to the newer Vision Pro's. See if you can find a model # and Mod, Chris or Ken will know that for sure.

Edit. That monitor needs an ISO.
 
If the monitor has been powered up with no ISO. You have a lot of diodes to replace. But. I believe there are some newer 7000s that do not require an externan ISO. Similar to the newer Vision Pro's. See if you can find a model # and Mod, Chris or Ken will know that for sure.

Edit. That monitor needs an ISO.

A ground wire is present on the power cord. Most of the labels are gone for ID'ing the chassis, I matched it to the K7000 from Bob's site.The purple wires leading into the chassis have instructions for an ISO.

While I'm at it...does anybody know which wires to splice the monitor into off of the back side of the ISO?
 

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A ground wire is present on the power cord. Most of the labels are gone for ID'ing the chassis, I matched it to the K7000 from Bob's site.The purple wires leading into the chassis have instructions for an ISO.

While I'm at it...does anybody know which wires to splice the monitor into off of the back side of the ISO?
I'm not sure which wires off that transformer are the isolated 120 for the monitor, but I would check arcarc for the Robotron manual. Also, I noticed your K7000 has a white adjustment knobs for the flyback. A lot of people are recommending that those be replaced even if they still work (see the K7000 sticky thread). For whatever reason they don't seem to last as long as a the version with black adjustment knobs.
 
I'm not sure which wires off that transformer are the isolated 120 for the monitor, but I would check arcarc for the Robotron manual. Also, I noticed your K7000 has a white adjustment knobs for the flyback. A lot of people are recommending that those be replaced even if they still work (see the K7000 sticky thread). For whatever reason they don't seem to last as long as a the version with black adjustment knobs.

Saw that recently, thanks for the reminder!
 
That transformer on the bottom of the cab is the iso - and regular power transformer - all built into one. The purple/yellow wires are the isolated monitor power.

I just worked on a Robotron today, so it's all fresh...
 

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I dont know why people on this message board crap out a twinkee when ever they see a switching power supply wired to the monitors AC supply.

Open up the switcher... One of the FIRST things you see on the AC path is another transformer that ISOLATES it from the cabinets AC suply lines....

So what you have is another Isolation transformer connected to your cabinets Isolation transformer.
 
That transformer on the bottom of the cab is the iso - and regular power transformer - all built into one. The purple/yellow wires are the isolated monitor power.

I just worked on a Robotron today, so it's all fresh...


I was waiting for you to chime in, I though you were going to say my K7000 was all fresh, haha
 
I agree

I dont know why people on this message board crap out a twinkee when ever they see a switching power supply wired to the monitors AC supply.

Open up the switcher... One of the FIRST things you see on the AC path is another transformer that ISOLATES it from the cabinets AC suply lines....

So what you have is another Isolation transformer connected to your cabinets Isolation transformer.

I see what you mean. I, being lazy, did not look at the pics and thought the monitor was being powered from the same AC source as the switcher with out being isolated. I never liked switcers wired from the ISO. I always use a seperate AC power source and just use the ISO to only power the monitor.
 
I see what you mean. I, being lazy, did not look at the pics and thought the monitor was being powered from the same AC source as the switcher with out being isolated. I never liked switcers wired from the ISO. I always use a seperate AC power source and just use the ISO to only power the monitor.

From the looks of things the monitor and the switcher are being supplied by the ISO'ed AC. FWIW theres really nothing wrong with wiring machines up like this. I've been in the Coin-Op industry since 1984 and have been wiring switchers and monitors together for as long as I can remember.
 
From the looks of things the monitor and the switcher are being supplied by the ISO'ed AC. FWIW theres really nothing wrong with wiring machines up like this. I've been in the Coin-Op industry since 1984 and have been wiring switchers and monitors together for as long as I can remember.

The ISO was not hooked up at all, monitor and switcher were running right off the power cord
 
The ISO was not hooked up at all, monitor and switcher were running right off the power cord

+1
It was mentioned in the first post that someone had spliced the power straight to the monitor and switcher wiring.

Power Cord ----> Monitor and Switcher
 

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