GD Rom set up not working 100%
- Red5
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GD Rom set up not working 100%
I have a GDrom, Net Dim, Naomi 1 mob all the cables:
mob proven to work, when power'd up with net dim in, i get nothing on screen, switch off, insert disk and switch back on, Disk can be heard booting etc, black / dark grey screen on crt,
then nothing, couple mins later the drive makes a typical DC drive noise, but still no picture / sound.
have two disk, and two dongles, have been told the GD rom can take a good few mins to load, so have left for 10+ mins at a time, still no joy
D
mob proven to work, when power'd up with net dim in, i get nothing on screen, switch off, insert disk and switch back on, Disk can be heard booting etc, black / dark grey screen on crt,
then nothing, couple mins later the drive makes a typical DC drive noise, but still no picture / sound.
have two disk, and two dongles, have been told the GD rom can take a good few mins to load, so have left for 10+ mins at a time, still no joy
D
- The Enigmatic Form
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Re: GD Rom set up not working 100%
No matter what, there should always be something on screen if the mobo works, even when the GD loads. Do you have another motherboard, or can you 100% confirm that it works with carts?
- Red5
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Re: GD Rom set up not working 100%
Sorry should of said, i have 2 fully working namoi 1 Mobs, work 100% with carts, boot screen etc without carts in.The Enigmatic Form wrote:No matter what, there should always be something on screen if the mobo works, even when the GD loads. Do you have another motherboard, or can you 100% confirm that it works with carts?
one has a BIOS that the last owner said worked with NET booting
- KmanSweden
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Re: GD Rom set up not working 100%
You need to change 3 jumper inside the Dimm to switch between Netboot and GD-Rom.Red5 wrote:Sorry should of said, i have 2 fully working namoi 1 Mobs, work 100% with carts, boot screen etc without carts in.The Enigmatic Form wrote:No matter what, there should always be something on screen if the mobo works, even when the GD loads. Do you have another motherboard, or can you 100% confirm that it works with carts?
one has a BIOS that the last owner said worked with NET booting
Up the Irons!
- Chi
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Re: GD Rom set up not working 100%
You've got the second power connector attached (the 6-pin one)?
"TO THE untrained eye Christian Cooper might have been stamping out a small fire " - The Times, 7th Feb, 2004
- Red5
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Re: GD Rom set up not working 100%
GD rom has all the cables connected and i can hear and feel it working, i just get nothing on the screen , no naomi splash screen, no errors zip
Even though i can not see any error codes, i have read that the daughter board on the dim board can become unseated, so i have opened and reseated, set the jumpers and still nothing. power down and put a game cart in and instant working game
Even though i can not see any error codes, i have read that the daughter board on the dim board can become unseated, so i have opened and reseated, set the jumpers and still nothing. power down and put a game cart in and instant working game
- thomj
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Re: GD Rom set up not working 100%
have you metered it?
made sure the dimm is properly seated?
made sure the dimm is properly seated?
- Red5
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Re: GD Rom set up not working 100%
not attempted metering yet, but de cased both the mob and the Dimm , so relative certain that there seated snugglythomj wrote:have you metered it?
made sure the dimm is properly seated?
- Red5
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Re: GD Rom set up not working 100%
Voltages tested 5.2 with a loadthomj wrote:have you metered it?
made sure the dimm is properly seated?
- wonderbanana
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Re: GD Rom set up not working 100%
Someone may correct me but I was always advised here that's too high for Naomi.Red5 wrote:Voltages tested 5.2 with a loadthomj wrote:have you metered it?
made sure the dimm is properly seated?
Should be 5.0 to 5.1 ish.
markedkiller78 wrote:that's probably my best contribution to the forum to date "I am pluralising fanny"
- Red5
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Re: GD Rom set up not working 100%
Well its bang on 5.00 now, still no joy, could the higher voltage have damaged the Dim board? .2 over the recommended does not seem excessivewonderbanana wrote:Someone may correct me but I was always advised here that's too high for Naomi.Red5 wrote:Voltages tested 5.2 with a loadthomj wrote:have you metered it?
made sure the dimm is properly seated?
Should be 5.0 to 5.1 ish.
- wonderbanana
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Re: GD Rom set up not working 100%
I know for certain that game carts can have the buffer chips fried at 5.2, I would assume net dimms are similar in that respect?Red5 wrote:
Well its bang on 5.00 now, still no joy, could the higher voltage have damaged the Dim board? .2 over the recommended does not seem excessive
Cageman & Andy iirc seemed to know most about this sort of thing though, I'm only repeating what I've been told tbf.
markedkiller78 wrote:that's probably my best contribution to the forum to date "I am pluralising fanny"
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Re: GD Rom set up not working 100%
what you do to get it working, share the wealth
- Red5
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Re: GD Rom set up not working 100%
What?purplec wrote:what you do to get it working, share the wealth
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Re: GD Rom set up not working 100%
Sorry im extremely tired and for some reason I read "now working" when it actually say "not working" sorry il either go have a cookie or go to bed.Red5 wrote:What?purplec wrote:what you do to get it working, share the wealth
- Red5
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Re: GD Rom set up not working 100%
lolpurplec wrote:Sorry im extremely tired and for some reason I read "now working" when it actually say "not working" sorry il either go have a cookie or go to bed.Red5 wrote:What?purplec wrote:what you do to get it working, share the wealth
- Red5
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Re: GD Rom set up not working 100%
another day, another Dimm now works 100%, re-checked the 5volt and 3 before inserting, 5.00v and 3.25, could not get the 3 volt any lower
odd if .2 over the norm has fried the Dimm, as i would say there would of been more variation that that from cabs coming out of the factory, but who knows.
odd if .2 over the norm has fried the Dimm, as i would say there would of been more variation that that from cabs coming out of the factory, but who knows.
- grantspain
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Re: GD Rom set up not working 100%
its 3.3 volts anyway
- wonderbanana
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Re: GD Rom set up not working 100%
I didn't realise you needed this lower than 3.3??? Has anyone advised different matey???Red5 wrote:could not get the 3 volt any lower
markedkiller78 wrote:that's probably my best contribution to the forum to date "I am pluralising fanny"