Sega Super Hang-on missing textures

tordyvel78

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Hello!
I bought an Super Hang-On upright with some graphic issues.
The game runs well besides some hum in left speaker.
Memory test - OK
CRT test shows uhm.. nothing?

Can it be one of the eproms that need reburn?

I post some pics.

IMG_1584.jpg

IMG_1581.jpg

IMG_1580.jpg
 
Yes the test can come up clear on a faulty board for two reasons.

1) the test may not test all ram/rom on board.

2) the test may not be overly comprehensive.

Have seen both on Sega boards. If all the EPROMs are present they are likely to be fine. Most likely is you have bad sprite SRAM chips that are not covered by the test routine.
 
Most likely is you have bad sprite SRAM chips that are not covered by the test routine.

Ok, thanks.
I have a Logic probe and a oscilloscope. Can you point me where i should look. I also have some crappy schematics :/

I looked on the boards and found that the three big connectors that connects CPU & Video board are unsoldered on one side. Is that OK or should i fix that?

20120501_092915.jpg
 
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