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Naomi 2 putting up “no signal” in my NNC

caloge

caloge

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Tried doing a search but couldn’t find someone with a similar problem. Naomi NetBoot setup. Hardware appears to boot up as I can hear the motherboard running. But no signal to the monitor. All dips are down.
Can’t test the sound as the netdimm is giving me problems (whole other ball of wax) but I should be seeing the Naomi 2 error message.

As you can probably tell. I’m a bit out of my depths on this. Any help is appreciated.

(P.s. if anyone knows why my raspberry pi won’t ping or connect to my netdimm id gladly accept some guidance on that too ?( )
 
I attached an image of my hook up. Thanks all.
 

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Thanks. So video AND sound problems. Wonderful. I will drop him a line.
 
Just gave it a shot and nada.

Took a couple more pics while I had everything apart in case anything stood out as obv broken or obv boneheaded on my part
 

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Mine was being a pain for a while (bought it while i was in Tokyo, i don't think i packed it well enough when i came back), sent it to Sega Ken, and he got it fixed up for me. wasn't super cheap (with shipping both ways cost me about what i spent on the Naomi 2 in the first place), but considering how much work he put in it was a bargain.
 
Here is some help for you (follow the quote to the thread for more info):
TylerDurden67 said:
Naomi 2:

Black screen
-Bios Corrupt or not present
-Problems CPU had more particularly to the BGA (extremely rare.changing GPU rams can make itboot)
-supercap (to change or leaked.Less worries than N1, not too many components around)
-GPU Fans not working
- 1 or 2 Mains RAM (IC106 and IC107) is / are dead (s)
Click to expand...
As long as you don't have supercap leakage, most of these fixes listed can be done if you have the tools. Supercap leakage means trace repair which is a pretty hefty effort. Since it is an NAOMI 2, you are less likely to be impacted by the dreaded supercap leakage. Word of advice to anyone that has a working NAOMI 1 or 2, pull and scrap that supercap (C29, affectionately known as "c'te bastard"). The board runs fine without it and the function it serves is redundant for home collection usage. TylerDurden67 says sometimes replacing it gets the board going again.

I got lucky recently in fixing a NAOMI 2 and all it needed was a new BIOS. Good luck!

EDIT: also try booting with a cart. NetDIMM's have their own problems at times.
 
Make sure your naomi has enough juice. Mine needs a little more on the 5v to boot. Also, check and make sure you have the dips setup for netboot mode on the dimm. Which monitor are you using? The tosh I had to set a switch to the middle for it to sync on VGA.
 
radiantsvgun said:
Make sure your naomi has enough juice. Mine needs a little more on the 5v to boot. Also, check and make sure you have the dips setup for netboot mode on the dimm. Which monitor are you using? The tosh I had to set a switch to the middle for it to sync on VGA.
Click to expand...
Hmm. Ok, I will try this. it is the toshiba. the motherboard fan powers up and the raspi gets juice, but still no sound or picture. will get back at it tonight after work.

Might have solved the raspi netdimm communication problem at least.
 
As an update. I contacted Sega Ken as suggested at irepairsega and his first suspicion turned out to be correct. I cracked the motherboard open and A CPU fan wasn't spinning. Needs a new bearing apparently so that's what's next on the docket.

As an aside, ken is extremely legit and if you need stuff repaired I wouldn't hesitate to send it to him.
 
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