Hantarex MTC9000 Basic testing

[Welly]

Hello, Apologies if this request is a bit vague. I have an Sega Outrun Deluxe Upright cabinet and cannot establish if the game PCB or the Monitor (Or Both) is not working.

Is there a way I can test the monitor without the game PCB. I don't have any other board or TPG at present. I noticed the video out cable from the game to the monitor has seen better days and will need to find or have a replacement made up.
Currently with the cab powered up I get a black screen. There is a glow in the neck of the monitor.
Also, any suggestion on a TPG or device I can plug in to produce video output instead of the game PCB for testing.

I feel this will be a long journey, so all help is appreciated.

Thanks, Chris.

 

[gunblade]

turn up the screen pot on the flyback, if you get a raster then its likely to be working

 

[Adamski]

This.Grant really knows his stuff

 

[Welly]

turn up the screen pot on the flyback, if you get a raster then its likely to be working

Thank you I will give this a try later. Is that the Bottom Pot / Brightness Adjustment ?

 

[gunblade]

yes

 

[Welly]

Hi all, I finally got chance to take a couple of pictures. Here are some images with the screen pot turned up to full brightness, with no video connected from the game board. Its is a deep purple colour. Should I be seeing a white screen.

 

[gunblade]

looks like green missing, could be cut off pot needs adjustment or bad transistor or bad solder joint or if its early 9000 then green contrast switch or even bad tube

 

[Welly]

looks like green missing, could be cut off pot needs adjustment or bad transistor or bad solder joint or if its early 9000 then green contrast switch or even bad tube

Thanks. Quite a list of potential issues there.

What would be the quick ones to check. I have a multimeter and willing but not the most experience at electronics. Is the green cut off pot on the neck board RV204.
(I'm looking at a downloaded manual for this as I'm at work.)

Thanks in advance.

 

[gunblade]

yep rv204
send a pic of your chassis, there are a few version of mtc9000

 

[Welly]

Thanks, Will send a PIC at the next oppertunity.

 

[69er]

Well done good progress so far for inexperienced hobbyist but just take care . Gunblade will remind you the screen brightness needs turning back to the point where the coloured flyback lines and background hue just about disappear

But my main reason to add is the start button probably just needs a standard microswitch easy to get hold of ….hundreds here they just wiggle out of the button body with bulb holder and detach from that by lifting the longer leg of the bulb holder and spin to release it reversing to reassemble.

 

[Welly]

yep rv204
send a pic of your chassis, there are a few version of mtc9000

Hi @gunblade attached are some pics. Turning the pot didn't seem to do anything.
Do you know of a way to connect a output to the monitor for test signal other than Outrun PCB. i have a number of PCs and Raspberry Pis floating around.

Kind Regards,
Chris.



Added neck board pic too. Urgh!