Naomi Help (no Display)

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subbie

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Hey I have a question. I have asked a few so far and nobody is exactly sure so I am asking here incase someone else might know.

I have a naomi 2 rigged to a MASS Super Nova with a Capcom IO board. The +5 line is giving out 5.7 volts. (it has been tested at 5.0 wich produces the same results).

When the supergun is turned on I get nothing on screen. Just a blank black screen. The screen does flicker quickly when I turn it on (like practicaly all devices do). I did test out a tekken 4 board on the supergun and get a display output from that board so I know the supergun is fine.

So any ideas?

The only conclusions left I could think is maybe my eeprom is dead and that is the cause for nothing on screen. Yet I have not gotten a verification if the naomi does nothing when it finds no bios.
 
JetFire

JetFire

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Hi subbie, Try to use VGA cable connect your naomi2. (Don't use the S-video cable)
Mass system supergun have a problem when you use the S-video cable to connect to Digital TV(ex,HDTV). Hope can help and you understand my english.
 
S

subbie

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JetFire said:
Hi subbie, Try to use VGA cable connect your naomi2. (Don't use the S-video cable)
Mass system supergun have a problem when you use the S-video cable to connect to Digital TV(ex,HDTV). Hope can help and you understand my english.
Click to expand...


I've tried VGA in the past with the same results I am having now. Nothing.

As well I get no audio from the unit. Also I used composite signal and not the s-video.
 
RGP

RGP

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subbie said:
I've tried VGA in the past with the same results I am having now. Nothing.

As well I get no audio from the unit. Also I used composite signal and not the s-video.
Click to expand...


You did remember to put it back into 15Khz mode when using the SuperGun?
 
RGP

RGP

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Actually I do have a spare Export N2 bios.
 
S

subbie

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realgameplay said:
You did remember to put it back into 15Khz mode when using the SuperGun?
Click to expand...

Haha actualy yes I did make sure to do that first before anything.
:)
 
A

Amano Jacu

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subbie said:
Yet I have not gotten a verification if the naomi does nothing when it finds no bios.
Click to expand...

I just checked and yes, the naomi doesn't output any video when turned on with no bios. However I would find very strange that it is your bios the faulty thing. Oh well, it could be possible.
 
L

lill-c

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Do you have anyone close by to you that has a cab with a Naomi in it? Maybe they can test it for you?
 
S

subbie

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lill-c said:
Do you have anyone close by to you that has a cab with a Naomi in it? Maybe they can test it for you?
Click to expand...

Not that I know of.
Disapointing part is the only eprom burner I have access to is a 40pin and not a 42pin. :(

Wish I could find a local place that can do eprom burns.
 
Spectre

Spectre

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You could try removing the game cart and bios to see if you get identical video output. Could be worth reseating the bios anyway...
 
L

lill-c

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Do you know someone here you can trust to send it to for them to test it for you?
 
S

subbie

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Spectre said:
You could try removing the game cart and bios to see if you get identical video output. Could be worth reseating the bios anyway...
Click to expand...

Done. Same result. As well, Amano Jacu posted above that the naomi outputs nothing when the bios chip is removed.

lill-c said:
Do you know someone here you can trust to send it to for them to test it for you?
Click to expand...

Nope. Would be much faster to just order an eprom off the net and have it shipped to me. I would need it anyways if it is a dead eprom.
 
Spectre

Spectre

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subbie said:
Done. Same result. As well, Amano Jacu posted above that the naomi outputs nothing when the bios chip is removed.
Click to expand...

I thought it might be worth checking for even very subtle changes in video output, such as the screen flicker on power-on you mentioned or even a small change in background shade/brightness. If the video output is slightly different with no bios seated then you could perhaps assume that it is indeed the bios which is at fault and not a more worrying hardware issue.
 
A

Amano Jacu

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Well, I tried it with my LCD computer monitor. When it doesn't get a signal it just goes to "stand-by" mode, and turns on automatically when it detects a signal. With no bios, it would just remain in the stand-by mode
 
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