Monitor Guru's...U2000\K7000 ISO?

MonsterBash

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Man I think I blew this one big time. I had an Area 51 with a u2000 that had a tube shatter. I replaced it with a k7000 I had just rebuilt and was gonna deal with the u2000 tube swap later. Game played fine for a couple months then I sold it to a guy 2000 miles away.

He get's it and the monitor is dead. I have him snap some pics and was like WTF..the 110 out of the PS is plugged directly into the monitor! Well...I should say directly from the Black\white\Green plug coming form the Area 51 PS. I'm assuming this doesn't have a built in ISO So then I started thinking I don't remember seeing an ISO in the Area 51.

So a couple questions..

Did the u2000 NOT use an ISO?

If that's the case according to Fromm's flow chart...he makes no mention of blowing anything other that the fuse if the k7000 is ran without an ISO.

The guy I'm working with has zero electronics experience but very willing to get his hands dirty. I'm thinking about sending him a pre-wired ISO and some replacement fuses. Or should I expect more damage to the k7000? He's willing to pull the monitor...I'd rather not to that route if possible.

Any help would be greatly appreciated!
 
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A U2000 does not need an isolation transformer.....and a K7000 series does.

Edward
 
Correct me if I'm wrong, but there must be an ISO built into that PS. Monitors that need an ISO will immediately have problems if hooked up without one.
 
I know some later monitors don't require an ISO. I think I threw an ISO required monitor into a cab that originally had a monitor that didn't require an ISO
 
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I understand what you are saying, but if you hook up a K7000 without an ISO, it should immediately "blow up" not wait some time, and then have an issue.
 
What model K7000? there are some that require an iso (ex. k7100 series) and some that don't (ex. k7400 series)


and +1 to this minus the explosion

if you hook up a K7000 without an ISO, it should immediately "blow up" not wait some time, and then have an issue.
 
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could have been for whatever reason, the k7000 likes your ac power perhaps the ground is missing at the plug or something.. but as soon as the new owner hooked it up, BOOM like it should when connected to straight ac.

ALmost always a k7000 will blow some diodes and traces.

Id send him a replacement chassis and a pre wired iso.
 
That certainly wasn't the case. Here's a couple pics of the k7000 after the tube swap. The first pic you can see the the old u2000 still in the cab with the new monitor (K7000) next to it.

Then a couple pics of the K7000 installed in the game...

I understand what you are saying, but if you hook up a K7000 without an ISO, it should immediately "blow up" not wait some time, and then have an issue.
 

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Thanks for the info...

I don't have an extra k7000 chassis. Think I'll just have him pull it and send it to me for repair

could have been for whatever reason, the k7000 likes your ac power perhaps the ground is missing at the plug or something.. but as soon as the new owner hooked it up, BOOM like it should when connected to straight ac.

ALmost always a k7000 will blow some diodes and traces.

Id send him a replacement chassis and a pre wired iso.
 
I understand what you are saying, but if you hook up a K7000 without an ISO, it should immediately "blow up" not wait some time, and then have an issue.

They don't always go immediately.....I have no idea why. I've personally seen some go quite a few hours before "blowing".

Edward
 
I've played this game probably 50-100 times across about 2 months and didn't have an issue. I would have very much rather had the thing grenade in my game room than 2000 miles away. I'm wondering if the monitor was over fused...I never checked the actual amperage of the fuse...only that it was good.

I know the 2A fuses I sent him blew immediately..and also tripped the breaker

Either way it certainly was my stupidity..and just not paying attention when I swapped the monitor. Being I usually work with early 80 games...I never gave the whole ISO thing a though. I just assume there was one

If there's anyone in the Albuquerque NM area that wants to do a service call let me know. Else..I'm gonna walk the guy through pulling the monitor and send the boards back for repair.

They don't always go immediately.....I have no idea why. I've personally seen some go quite a few hours before "blowing".

Edward
 
Personally i haven't hooked one up wrong, but i did just get a machine that was iso-less but had a k7193 installed and powered up (beyond that i know nothing), so i swapped a k7400 in. I still have to troubleshoot or see if there's even anything wrong with the 7193 (maybe this week finally).

That's just my experience with this. Didn't know that there's a chance it can work fine for some time before failing (learn something new every day).

Sucks that it failed so far away, at least your backing up your item by fixing it, very commendable.
 
That's just my experience with this. Didn't know that there's a chance it can work fine for some time before failing (learn something new every day).

A lot of times it'll have to do with the wall outlet the game is plugged into.....floating ground, reversed polarity, etc......it'll affect how and when it'll blow.

Edward
 
That certainly wasn't the case. Here's a couple pics of the k7000 after the tube swap. The first pic you can see the the old u2000 still in the cab with the new monitor (K7000) next to it.

Then a couple pics of the K7000 installed in the game...

YEah an back before i knew better i was powering k7000s with an xbox "repair cord" they sent out to keep those xboxes from catching fire..


Nowadays it is amazing that i didnt blow more stuff up lmao
 
Tell me about that...I never gave it a second thought. It wasn't until he sent pics of the back of the game..that's when the light bulb went off.

Oh well.. live and learn. I'll probably have more into this than I sold the game for.

Can't blame it on anyone but myself. At least the guy that bought the game is willing to get dirty. I spent about 2 hours typing a email on how to pull the monitor and boards. Hopefully he doesn't zap himself or break anything.

Funny though...I don't even have another k7000 to test\repair this in. I got a couple 25" donor tubes that are probably close enough for repair testing.

Personally i haven't hooked one up wrong, but i did just get a machine that was iso-less but had a k7193 installed and powered up (beyond that i know nothing), so i swapped a k7400 in. I still have to troubleshoot or see if there's even anything wrong with the 7193 (maybe this week finally).

That's just my experience with this. Didn't know that there's a chance it can work fine for some time before failing (learn something new every day).

.
 
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