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Need Help[ with by Projection Set - 50" Mitsubishi

I usually post on the arcade group but I was told the projection
experts are here.

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I have a Sega Gunblade Video Game with a 50" Mitsubishi Projection TV.

The model # is VS-50SE1 which Mitsubishi does not recognize. Sega
bought these sets and modified them with cooling fans and a seperate
input for the video from the game. No one has been able to find a
manual for that model. There is no chassis # to cross reference it.

Other arcade people think the model is a VS-5043 which was also made
in 1996. If you have a manual for either odel or know where I can
download it, please let me know,.

The set come on for about 5 seconds and I hear high voltage kick in
and them the relay kick the set off. Since I can't find a manual as
of yet, I am thinking the B+ is too high and it is shutting down. I
was going to disconnect the B+ from the flyback to see if it come on.
I also thinking about changing the HOT and VR to see if that wil do
it.

Any common problems that I need to check?

Any help or advice will be appreciated

Kajunlion
 
Update -


I have ruled out the power supply section & Horz output becuase the
set does fire up and then shuts down. This tells me it is working but
the set is sensing either too much voltage or current.

I thought the problem might be the vert output IC and I changed it and
no luck.

The guy who is helping me told me that it might be one of the 3
convergence IC's that is bad. He says that usually when a projection
set shuts down, it is either a convergence or verticle problem.


Any help will be appreciated
Thanks
Kajunlion
 
J

Jamie

Jan 1, 1970
0
Update -


I have ruled out the power supply section & Horz output becuase the
set does fire up and then shuts down. This tells me it is working but
the set is sensing either too much voltage or current.

I thought the problem might be the vert output IC and I changed it and
no luck.

The guy who is helping me told me that it might be one of the 3
convergence IC's that is bad. He says that usually when a projection
set shuts down, it is either a convergence or verticle problem.


Any help will be appreciated
Thanks
Kajunlion
Or, depending on why type of projector set you have, (CRT is assumed
here), the irradiation sensor could be detecting excessive amounts or
be defective if you have one that is.
 
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