Need Help[ with by Projection Set - 50" Mitsubishi

kajunlion 18 years ago

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

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kajunlion 18 years ago

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

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Jamie 18 years ago

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.

"I'm never wrong, once i thought i was, but was mistaken" Real Programmers Do things like this. http://webpages.charter.net/jamie_5

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kajunlion 18 years ago

I will chech it out and post it here.

Thanks Kajunlion

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