RESULT! - AES continual resetting at start-up.

El Capitan

El Capitan

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Hello all.

I am having some trouble with 3 AES systems I own. When they power on, after about a second they reset, and again, and again.

In that one second, one shows garbled pixels, two show the start of the Neo-logo and the first chime of the logo sound.

Any thoughts?

All need 5V input and I'm using a 5V 2A power supply.
 
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J

JMKurtz

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2A may not be enough power if they are the older generation boards. So, try the standard 5V 3A supply.

Jeff
 
El Capitan

El Capitan

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JMKurtz said:
2A may not be enough power if they are the older generation boards. So, try the standard 5V 3A supply.

Jeff
Click to expand...

Thanks Jeff - I managed to get to maplin today and I got a 5V 2.5A PSU but it was frikking positive centre when I got it home.

Well I switched the polarity and the one console now cycles through most of the Neo-Geo logo (and most of the chimes) but then resets....

Do you know what inside the system could be causing the resets? what part is drawing the current?


I wish I knew where to get a PSU for these in the UK.... (I have some other AES using the ProPow3 which work fine.
 
El Capitan

El Capitan

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360heelflip said:
Get a Step-down... that should help
Click to expand...

That makes no sense.

You only need a step down when you use a power supply from a country with a different rated voltage....

:shame:
 
A

Adamaki

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El Capitan said:
That makes no sense.

You only need a step down when you use a power supply from a country with a different rated voltage....

:shame:
Click to expand...

He means get a stepdown so you can use the original neo geo power supply with it. That's assuming you have the original power supply.

I know it's not easy finding a suitable power supply for the aes in the UK. I tried and ended up just getting a stepdown so I could use the original power supply.
 
El Capitan

El Capitan

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Heh - I have about 5 setpdown convertors, and If I had the original PSU I would be using it.

I don't have the original PSU, hence I'm after a bit of help!
 
K

Kunio

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Untested theory

Hey!

***THIS IS AN UNTESTED THEORY!! LET'S HOPE SOMEBODY ELSE HERE WITH BETTER KNOWLEDGE THAN I CAN COMMENT ON THIS ONE!!***

A standard PC AT power supply has +5V lines with a lot of amps. Is that something that can be used for testing 5V Neo systems..?
 
El Capitan

El Capitan

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Kunio said:
Hey!

***THIS IS AN UNTESTED THEORY!! LET'S HOPE SOMEBODY ELSE HERE WITH BETTER KNOWLEDGE THAN I CAN COMMENT ON THIS ONE!!***

A standard PC AT power supply has +5V lines with a lot of amps. Is that something that can be used for testing 5V Neo systems..?
Click to expand...

hmmmm!

Anyone know about this?

Jeff?
 
A

Adamaki

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Kunio said:
A standard PC AT power supply has +5V lines with a lot of amps. Is that something that can be used for testing 5V Neo systems..?
Click to expand...

That's assuming he has the 5v aes board and not the 9v revised board.
 
Patmaster

Patmaster

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Kunio said:
Hey!

***THIS IS AN UNTESTED THEORY!! LET'S HOPE SOMEBODY ELSE HERE WITH BETTER KNOWLEDGE THAN I CAN COMMENT ON THIS ONE!!***

A standard PC AT power supply has +5V lines with a lot of amps. Is that something that can be used for testing 5V Neo systems..?
Click to expand...

YES, tested and works. I have an 5V AES too and at the beginning the seller forgot to send me the original PSU, so I picked my old AT-PC-PSU and it works perfectly. An AT power supply should have about 20A, but that's not a prib, because the AES will only take the 3A it needs, so you can use an AT power supply to fire up your 5V AES. :)
 
El Capitan

El Capitan

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Whallop! Back of the net!

I just Heath-Robinsoned a PC PSU up to a Neo Geo style power cable for full on 5V power!

Of the 3 AES systems:

1) Perfect operation! Puuuuurrrrrfect! Get in

2) Not bad, weirdly the system works fine is the AES is switched on (at the ON/OFF switch) and then the live PSU is connected. If i then flick the on/off switch to off and then back on, the PSU clicks off and I have to unplug it at the wall socket......
If I plug in the PSU and then connect it to the Neo Geo (with the on/off switch at off) and then turn the Neo on, it clicks off like above....

3) Totally fucked, but hey, I needed a spare shell to replace one I smashed.


Ok - now any thoughts about what's happening with AES system 2?
 
El Capitan

El Capitan

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Any thoughts on system 2 guys?

I would like to get it fully working.

I guess the most likely explanation is a faulty grounding somewhere?
 
A

Adamaki

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El Capitan said:
Any thoughts on system 2 guys?

I would like to get it fully working.

I guess the most likely explanation is a faulty grounding somewhere?
Click to expand...

Yeah I'd like to know what's wrong with it too. Come on guys! I would guess at faulty grounding as well.

Well I know who to ask if I need any spare parts for an aes now anyway ;)
 
El Capitan

El Capitan

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I've already taken the shell for one of my other Neo's I smashed.

and I have had interest in the broken PCB for parts! it's a crazy world!
 
channelmaniac

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It could be quite a few things depending on how the power supply section was designed!

If it's a switching type then it could have a feedback mechanism in there that looks at the voltage and if it's too high, it shuts down. It could be thinking it's too high if you have an electrolytic capacitor that is drying out and not filtering like it should be... Maybe it's shutting down thinking that there is too much current draw...

Without actually seeing one, it's hard to figure out where to begin. I'd try comparing some resistance readings from the output of the power supply section to see what the resistance readings are for the various voltage outputs. If they are very close to the same, then I'd try shotgunning the electrolytic capacitors in the power supply. If they are off by quite a bit then try to track down why...

RJ
 
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