Neo Geo AES video problem

salvo85

New Challenger
Hi All,

i bought a few of days the my dream console after years to be able to buy it.
When i start the console without the game the screen become blue, so i think that it goes in diagnostic mode and there aren't problems (with your experience, can you confirm this?).
today i riceve Fatal Fury 2 and when i insert the game or not see any signal on TV or there are glitchesglitches aes.jpg

After some tests i clean the contact on the game cartridge that there was dirt and dust but also after the clean the problem remain.

Do you have any idea to understand if the problem is the console or the game?

thanks
 

gtsamour

Twinkle Star Sprite
A Blue screen on power up without a cartridge plugged in means the system passed it's self diagnostics successfuly.
The bios self diagnostics are not by any means thorough but its an indication that the system is probably OK.

I would go with the cart being faulty in your place, try to clean the contacts again, very good cleaning this time. Use isopropyl alcohol or classic alcohol with a cotton swab. You can also clean the two slots of the system usind a credit card (or any other similar size card) with a thin cloth soaked with alcohol or prefferably isopropyl alcohol. Cover one side of the card with the cloth and stick it in the slot several times in and out all the way for the whole length of each slot.

Do you have any sound from the system? Try ear phones plugged to the sound hole in the front of the console and make sure the volume slider is all the way to the right. It looks like your TV is compatible since you are getting a clear blue screen without the cart plugged in.

The sure way to know if its the system or the cart is to try another cart that is known to be good, but I guess you don't have one...

What power supply are you using? Can you post a close photo with the specs of the PSU?
 
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salvo85

New Challenger
Hi,

thank you for your answer, i try many times to clean the contacts with classic alcohol but this is the results:

glitches aes 2.jpg
I notice that when i start console without cart immediately give me screen blue, when i insert the cart and start the console take more time (maybe 10 sec. ) before i see something on the screen, is normal?

thank you in advice for your support
 

Atro

Who?,
You seem to have a fucked up BIOS and/or RAM.

I had to change both on one of my AES's. It was a hell of NO fun to find the culprit.
 

gtsamour

Twinkle Star Sprite
You seem to have a fucked up BIOS and/or RAM.

I had to change both on one of my AES's. It was a hell of NO fun to find the culprit.
How can he have fucked up the bios if the self diagnostics which reside in the bios indicate a blue screen which means they are read and run successfully?
Also blue screen means the ram is good.

I don't believe its that.


If a console is OK and a cart is OK then the neo geo logo appears a second after powering on.

Photo of the PSU ratings please.
 

salvo85

New Challenger
If i clean the card's contact and give me this result is possibile clean the contact in the console?
maybe witha spray electric cleaner? Or it is so risky?
 

Atro

Who?,
How can he have fucked up the bios if the self diagnostics which reside in the bios indicate a blue screen which means they are read and run successfully?
Also blue screen means the ram is good.

I don't believe its that.


If a console is OK and a cart is OK then the neo geo logo appears a second after powering on.

Photo of the PSU ratings please.
Because I had a similar problem. Turned out to be a malfunctionning BIOS. Might not be his issue.

I desoldered the old one, instaled a socket and inserted a UniBIOS.

The games could boot, but it still gave me RAM errors. Two were dead. Luckily I had a few spare MVS boards around as donnors. Works like a charm now.
 

gtsamour

Twinkle Star Sprite
Because I had a similar problem. Turned out to be a malfunctionning BIOS. Might not be his issue.

I desoldered the old one, instaled a socket and inserted a UniBIOS.

The games could boot, but it still gave me RAM errors. Two were dead. Luckily I had a few spare MVS boards around as donnors. Works like a charm now.
Was it giving a blue screen?
 

Atro

Who?,
Also, this issue persisted in only certain games. I remember Sengoku worked fine, despite the hardware issue. Fatal Fury 3 on the other hand, never worked until I swapped the BIOS and RAM.
 

salvo85

New Challenger
Sorry gtsamour i don't see that you edit your message i search to answer to your question:
-no i don't have any sound from tv, i don't try with the earphone, i will try and give you update;
-unfortunately i don't have any cart to try;
- i live in Italy so i use this adapter:
psu aes.jpg
 

gtsamour

Twinkle Star Sprite
Are you sure your AES is a 10V needing version? Some of them need 5V. Dont connect it again unless you're sure. You need to open the console up and post a photo right away. Do you have the original PSU? Is it a 10V one?
Unfortunately you can't tell from the outside.
 

gtsamour

Twinkle Star Sprite
No. It was giving garbage screen. Like his. Blue screen, green screen, etc are solid colors. Garbage screens are different errors.
His console gives garbage only with a cart inserted. The blue screen is when the system is powered on without any cart plugged in and the diagnostics from the bios are run. Blue screen means all diagnostics passed like in his case.
In your case and without the cartridge plugged in, what was the picture like?
 

gtsamour

Twinkle Star Sprite
The easy thing to do now is to clean the 2 slots as I described and see how it goes.
Also if you have a 10V Sega Megadrive PSU (center negative) you can also use it.
 

salvo85

New Challenger
ok gtsamour i will clean the 2 slots and hope.
thanks for your support i will update you, from the screens you see that all is OK on the PCB?
 

gtsamour

Twinkle Star Sprite
ok gtsamour i will clean the 2 slots and hope.
thanks for your support i will update you, from the screens you see that all is OK on the PCB?
The pictures aren't very detailed but I don't see something wrong. Its a good thing you get a blue screen without a cart in my opinion.

Did the game come with the console or did you buy it seperately?
 

salvo85

New Challenger
Hi,

i went to the market to buy the spray, after various clean on the 2 slots (when insert the cloth with the card it was clean) and clean the cntact card not see any solution.
I put in the earphone and i heard alternate buzz when the cart is in.

I bought them separately. i will try again to clean both.

Thanks
 

gtsamour

Twinkle Star Sprite
If i try to open the cartridge we can see anything can help to risolve the problem?
Well i dont see why not. There are videos on youtube on how to open one without causing damage, its pretty easy. Take photo as soon as you open it so you know exactly how to put it back.
 

salvo85

New Challenger
I have a question can be the problem in the 2 slots, i don’t know for example unsoldered part on the slots? In this case the diagnose test reveal this type pf problems?
 

gtsamour

Twinkle Star Sprite
I have a question can be the problem in the 2 slots, i don’t know for example unsoldered part on the slots? In this case the diagnose test reveal this type pf problems?
No, the diagnostic cannot detect such things. I dont think the problem is a cracked solder point of the slots, anything is possible but you have to go with the most probable, which in this case is a bad cart.
The only way to be certain is to either find another game or another aes console to try.
 

salvo85

New Challenger
Hi,

i successfull open the cartridge and i see this:

contact.jpgcontact2.jpgcontact3.jpgcontact4.jpgcontact5.jpg

as you can see everywhere the contact seems ruined (lost the golden contact) so i presume that whe i insert the cart in the console there isn't the correct contact and the correct transmission among them.
You can confirm this theory? if yes you have any idea if it is repairable?

thanks
 

gtsamour

Twinkle Star Sprite
Here is a link with scans of a legit cart of Fatal Fury 2 for you to compare (its easier for you since you have it on hand)

From what I can see I think that someone has tined the contacts using solder, a soldering iron and solder wick. This is a method when the contacts are very corroded or damaged somehow. This isn't bad. I have done it on other retro computer expansion slots myself.
So, the cart has been definitely opened in the past by someone else. Was it sold to you as "working" or "untested" ?
The contacts don't lose their gold copper color on their own.

The best way to clean dirty contacts since you have the cart open and have very good access to them, is to rub them with a pencil rubber (the white one prefferably since its softer, or the orange one)

After you clean them as much as you can, them rub the contacts with alcohol.

If that doesn't help then it's probably a bad cart.

Also check for anything suspicious on the other side of the boards. Do the boards look like they have been tampered with (besides the contacts)
 

Xian Xi

JammaNationX,
You're comparing a very high quality power supply with the Chinese built one you have now that doesn't even output close to 1A when tested. You'll be lucky to even get 500mA out of it.
 

gtsamour

Twinkle Star Sprite
What Xian Xi is saying might be absolutely true.

I'm using a 10V 1.2A PSU and the AES is working perfectly but my PSU is made by SEGA.

Whatever you try be VERY careful of the polarity otherwise you'll fry the console. You need center negative.
 

gtsamour

Twinkle Star Sprite
Which psu sega is your for what console
Model No : 1602-05
10V 1.2A
Center negative


There are a few different model numbers with the exact same specs.
You absolutely need center negative and 10V 1.2A

The one in the photo you posted is for the Megadrive 2 and is NOT what you need, it also has the wrong polarity,
 
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salvo85

New Challenger
Updates: i bought the psu correct:
D910CD3E-8702-40B6-944F-E39080C0105B.jpeg

to find this i bought entire mega drive 1 and in the end i try again to start AES without cart always blue screen, with cart nothing always gargabe
 

salvo85

New Challenger
Sum up, i try to clean with the pencil rubber all the electric contact and cleaned ti with alcohol.
I replace the psu with sega psu always screen blue without cartridge always garbage.
The cartridge was used and tested OK.
For other test i don’t have other aes and in this moment i don’t have any cartridge but i bought a new one but will arrive in 13th april.
Do you have other ideas? Or test or do you want other photos...

thanks everyone for your support
 

gtsamour

Twinkle Star Sprite
What do you mean "The cartridge was used and tested OK"?
Did they test it in the shop where you bought the Megadrive and it worked?
 

salvo85

New Challenger
No sorry for the misundestanding, i wanted to answer your old question, when i bought the game they said me that tested before to send me
 

gtsamour

Twinkle Star Sprite
No sorry for the misundestanding, i wanted to answer your old question, when i bought the game they said me that tested before to send me
Oh I see.

Well I guess all you can do now is wait for the other game to come. Unless someone else suggests to try something different.
 

DaisyAge

B. Jenet's Firstmate
You could try putting in the cart and starting the AES with top case off and then try slightly pressing on chips to see if you get a different result. Whichever chips cause new things to show up you should write down and then try to replace.
 

salvo85

New Challenger
If i understand correctly you want that i put the cart in the aes without the cover, with only the base support, and press the chips on the two pcb? Is not dangerous for the components?
 

DaisyAge

B. Jenet's Firstmate
No press on the chips on your neo geo AES. As long as your fingers are dry its fine. Keep the cart together.
 
Well, of you do end up swapping the bios, you'd might as well put in the smkdan Diagonstic Bios. I'd be curious to see what it reports back.
 

salvo85

New Challenger
Hi to everybody,

some upgrades, after more tests on the cartridge i contacted the seller explained all the problems and tests that we did and he onestly ask me to resend him the game and give me back the money because also he thought that the problem was the cartridge, also if he said that he tests the game and worked before send me.
In meanwhile i bought another game Fatal fury Special from another buyer on ebay and arrived today and......
it WORKED!!!
Immediately i insert the cart and start the console it works
I'm so gracefull to your help and support and i'm so very happy that the problem is not the console.
With calm i controlled the new cart and notice that all contacts have the gold electric contact and are all clean.
I'm so very happy to have this wonderfull fun machine now the next step is buy games but the problem is MONEY!!! they are very expensive (i have also the neo geo CD and the games are more cheap in compare).
I think to buy a MVS to AES converter to save money on the MVS cart, do you use some converter? do you have experience?

Thaks all
 

Xian Xi

JammaNationX,
Hi,

i successfull open the cartridge and i see this:

View attachment 46767View attachment 46768View attachment 46769View attachment 46770View attachment 46771

as you can see everywhere the contact seems ruined (lost the golden contact) so i presume that whe i insert the cart in the console there isn't the correct contact and the correct transmission among them.
You can confirm this theory? if yes you have any idea if it is repairable?

thanks
If that's how the cart was when you opened it, no wonder why it wasn't working. The PROG and CHAR boards were swapped. When you open an AES/MVS cart, you'll either see the top of the PROG board or the bottom of the CHAR board. If you see the top of the CHAR board then the PCBs were swapped.
 

DaisyAge

B. Jenet's Firstmate
Lmfao Xian Xi always dropping the knowledge. Three pages and this guy is the only one to notice that the boards are swapped. Try it out and let us know if that fixes it.
 
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