Lunar Lander monitor question..beginner here

Nevus

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My Lunar Lander arrived this week and played fine the first evening I plugged it in. The next day and since that time, the monitor appears to be zoomed in to the center of the screen. The entire screen is illuminated. The self test runs fine. All I can see is..
Insert Coin
750 FUEL UNITS PER COIN
and a mountain top with some stars.

It appears to play and if the ships drifts by the zoomed area, I can land it.

I have very limited knowledge and the seller has been helpful with some suggestions and appropriate cautions (ie dont do this etc).

Is anyone here able to tell me exactly what that might be or help me identify how to narrow it down.

Thanks in advance. I'm ready to fly my new Lander!
 
Zoomed in.

On a 19v2000 or a GO5-802 it would be the HV diode failing. I think all LLs came with a GO5-801. Cant remember if they have the HV diode or not. I have never had one fail on those. Someone could have upgraded the monitor to the later 2 styles used in Atari Vectors. Does it have 2 large capacitors standing up in the middle of the monitor frame if you are looking from the back? A pic of the chassis would help on the ID. It sounds like blooming either way though.
 
If you have a G05-801 then I probably have working spare monitor boards for it if you are interested. I would take your non-working as a partial trade.
 
When I was inquiring about the game before buying it the seller told me he had it for about 5 years, most of that time idle and it worked fine. He also said "I did cap the monitor and I have adjusted the HV output on the flyback".

It worked fine the first night I had it and then sadness. I checked and it does have to two large blue capacitors on the back. It looks like the one in this thread to me. http://forums.arcade-museum.com/showthread.php?t=107992

I'm exactly not sure what/where the parts (are located)you guys are refering to. I do have acess to manuals online. Any further suggestions etc are really appreciated.
 
When I was inquiring about the game before buying it the seller told me he had it for about 5 years, most of that time idle and it worked fine. He also said "I did cap the monitor and I have adjusted the HV output on the flyback".

The monitor is a G05-801 and the above things mentioned were done to the monitor. It was also burn tested for about 8hours a few times including the day before the game was shipped. The voltage doubler failure is common but not something you can fix until it happens. It must have happened after you recieved the machine and "left it on all night", as you had told me in your email prior it was working fine.

If you want to remove the HV section (requires a discharge tool) and send it to me along with the voltage doubler parts from arcadecup.com I will install it for free and test it in my machine. Depending on what he is chargeing you may be better off doing a swap with ArcRevival for just a HV section he has already tested and is known working.
 
Before this thread gives the wrong impression somehow, I'm not complaining about the sale, seller, machine etc. Perfidious has been extremely helpful to me and I'm very happy with the transaction etc. Thanks to everyone else as well. Please keep helping.

I followed the link to arcadecup.com and found this item for $65.00.
High Voltage Doubler for the G05-801 vector monitor! All components brand new. Runs Cold to touch! 30KV PRV! Integrated anode cup!

Does that sound like the right part?
 
One thing you should check first is the green and white wires connected to the power brick in the bottom of the cabinet (bolt post w/ a nut holding the wires on). In my early Asteroids (owl eye coin door, w/ the G05-801) I had major blooming... I was going crazy troubleshooting the problem, I swapped just about every part in the machine, and it ended up just being that those wires weren't connected.

Of course it shouldn't have come undone on its own, but it could have been loose... and it's easy enough to check.

DogP
 
blooming question

One thing you should check first is the green and white wires connected to the power brick in the bottom of the cabinet (bolt post w/ a nut holding the wires on). In my early Asteroids (owl eye coin door, w/ the G05-801) I had major blooming... I was going crazy troubleshooting the problem, I swapped just about every part in the machine, and it ended up just being that those wires weren't connected.

Of course it shouldn't have come undone on its own, but it could have been loose... and it's easy enough to check.

DogP

I am curious if the blooming you experienced with this grounding issue was the same as he described and is described on this webpage?

http://www.arcadesolution.com/blooming.html

I have seen ground issues cause blooming in the vector lines being fatter or appear out of focus but never the entire screen magnified or zoomed as it does when the voltage doubler fails. If this can be the case from loose grounds also I want to be aware of it.
 
I am curious if the blooming you experienced with this grounding issue was the same as he described and is described on this webpage?

http://www.arcadesolution.com/blooming.html

I have seen ground issues cause blooming in the vector lines being fatter or appear out of focus but never the entire screen magnified or zoomed as it does when the voltage doubler fails. If this can be the case from loose grounds also I want to be aware of it.

Yeah, it was real blooming in the normal sense, caused by the HV dropping (I could see it from the HV probe). I probably would have suspected the voltage doubler as well, except that I had multiple monitors, and I thought the odds of all of them being same were pretty slim. I was actually troubleshooting humming on my Asteroids last week and saw the major blooming and got scared for a sec, then I remembered that I just swapped the power brick and forgot to hook those wires back up :p .

BTW, here was my old post, though there weren't any pictures or anything:
http://forums.arcade-museum.com/showthread.php?t=21174

DogP
 
Follow up post.

I (okay a friend did most of it while I watched) replaced the HV cage today and the Blooming problem was resolved. Thanks to everyone for your assistance.

Game On!
 
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