Naomi Netdimm issues

PCB problems and fixes
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Benimaru
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Naomi Netdimm issues

Post by Benimaru » January 26th, 2019, 10:45 am

Hey guys,

seems that someone have sold me a faulty Netdimm a while ago...
There is no Naomi screen or any sign of life uppon booting. The only thing I could recognize is a short flash of all of the 4 onboard LEDs:

https://imageshack.us/i/plki4KCtp

Anyone could me here?

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DaveyD
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Re: Naomi Netdimm issues

Post by DaveyD » January 26th, 2019, 11:08 am

Does the Naomi boot up without the net dimm installed?

Benimaru
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Re: Naomi Netdimm issues

Post by Benimaru » January 26th, 2019, 12:35 pm

Yes, the Naomi MoBo works perfectly fine with any game, I have a multibios chip installed.
But everything I receive with the Netdimm inserted is a dark screen.

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nem
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Re: Naomi Netdimm issues

Post by nem » January 26th, 2019, 12:58 pm

Netdimms can be surprisingly power hungry. Check your voltages.

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DaveyD
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Re: Naomi Netdimm issues

Post by DaveyD » January 26th, 2019, 2:26 pm

As above - what are you using to power it? If you are using a Sega/capcom JVS to Jamma adapter it won't supply enough juice

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