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macck

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Hi guys,

I'm having a little problem with my Demon Front cartridge.

The game has some missing sprite, but if i give him a little touch the sprites come back...after a while the issue back again and i need gave another touch in the cart to fix.

I've cleaned the cartridge contacts and the motherboard slot, but the issue persist, so i think it's a problem in the cartridge sprite area.

So, someone can guide me, where is locatedy the sprite area in the cartridge? I will try make some "re-flow" in the components to fix it.

Thanks

[]'Macck
 

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Neo-Alec

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Hi Macck. Is that a photo of an AES that plays MVS carts, or an AES system with a converter.

Anyway, does the PGM board work fine with other games? Sounds like a connection issue.
 

macck

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Hi Neo, yes it's my "AES" with a MV-1C inside.

Yes the PGM motherboard works fine with other games, i suspected too that was a connection issue, so as i said, cleaned up the cartridge pins and washed the board slot, but does not fixed it.

[]'Macck
 

GC8TECH

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Sounds like a "doddgy" cart connector. If you wiggle it and it comes good... that's probibly what it is. Do you have a Dual wipe or a single wipe cart slot connectors??

Tim.
 

macck

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Hi GC8TECH.

Sorry, no.

I never has seen one before, i have doubt if i will fInd this in Brazil, can you please post a pic or link to me see?

Cheers,
Macck
 

GC8TECH

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Attached is a pic of DUAL on top and SINGLE on the bottom....

Tim.
 

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Rg111

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Is your voltage correct?

I had a similar graphics issue with Martial Masters and it turned out my voltage was not exactly on 5v (before inserting the cartridge)
 

Fluffy

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sprites are the Axxx and Bxxx Roms on the bottom board. As you get square sprites i suspect the Bxxx Roms first, which contain the mask data.
You should inspect the bus Pins as well, both on the cart and the connector. Have a look on the pgm conversion thread for circuit diagrams which pins connect to which Rom type. I am on my phone, otherwise i'd post a copy here.
 

Neo-Alec

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Macck, do you have more photos of the MV-1C somewhere? Maybe I've seen yours before. I'm interested in these.
 

macck

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Is your voltage correct?

I had a similar graphics issue with Martial Masters and it turned out my voltage was not exactly on 5v (before inserting the cartridge)
Hi Rg111,

Yes the voltage is ok.
 

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macck

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sprites are the Axxx and Bxxx Roms on the bottom board. As you get square sprites i suspect the Bxxx Roms first, which contain the mask data.
You should inspect the bus Pins as well, both on the cart and the connector. Have a look on the pgm conversion thread for circuit diagrams which pins connect to which Rom type. I am on my phone, otherwise i'd post a copy here.
Thank you soo much Fluffy to guide me to the right place, after a "re-flow" in all the Bxxx roms = problem solved.

Thank you all for helping to fix the problem, i love this game!!!

Macck, do you have more photos of the MV-1C somewhere? Maybe I've seen yours before. I'm interested in these.
Not at the moment Neo-Alec, but i can open it and take some pics. I've made it for about +10 years old, haha a lot of wires inside. Give me sometime and i will provide.

Cheers,
Macck
 

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GC8TECH

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Hi guys,

I'm having a little problem with my Demon Front cartridge.

The game has some missing sprite, but if i give him a little touch the sprites come back...after a while the issue back again and i need gave another touch in the cart to fix.

I've cleaned the cartridge contacts and the motherboard slot, but the issue persist, so i think it's a problem in the cartridge sprite area.

So, someone can guide me, where is locatedy the sprite area in the cartridge? I will try make some "re-flow" in the components to fix it.

Thanks

[]'Macck
Hey @macck

Any chance you can help me with this??

https://www.arcade-projects.com/for...or-demon-front-cart-serial-test-number.11012/

Trying to find more people with Demon Front carts....

T.
 

macck

Student
Joined
Jul 21, 2015
Messages
36
Reaction score
22
Location
Brazil
Hi guys,

I'm having a little problem with my Demon Front cartridge.

The game has some missing sprite, but if i give him a little touch the sprites come back...after a while the issue back again and i need gave another touch in the cart to fix.

I've cleaned the cartridge contacts and the motherboard slot, but the issue persist, so i think it's a problem in the cartridge sprite area.

So, someone can guide me, where is locatedy the sprite area in the cartridge? I will try make some "re-flow" in the components to fix it.

Thanks

[]'Macck
Hey @macck
Any chance you can help me with this??

https://www.arcade-projects.com/for...or-demon-front-cart-serial-test-number.11012/

Trying to find more people with Demon Front carts....

T.
Sure i can! Tomorrow will provide pics at your post dude.

Cheers
Macck
 
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