Hello,
I wonder if anybody could give me some pointers, I have 2 AES which I am restoring at the moment with an interesting number of video faults.
#1 AES NEO-AES3-4
This one looked like an easy fix, when I first saw the motherboard. The previous owner had cut the bios off and kept the legs to solder a socket on top of it for I guess a Unibios or something similar. Previous owner kindly left a fully work bios. When turned it on, it only displayed a white screen, flickered and made a clicking sound. My conclusion was bad bios installation.
What I did is remove as delicately as possible (took me 2-3 hours) the socket, the previous legs and re-seated the bios. In hindsight I should have fitted a new socket, I've ordered some but they haven't arrived yet...
After bios re-seat the console magically started and displayed the NeoGeo splash screen almost perfectly (see screenshots) however the intro scren of the game I use for testing, Samurai Spirits is all white with some garbage graphic displayed at the top. I can play the game, the sound is perfect, but the gameplay is plagued by white vertical bar. I tried cleaning the cartridge thoroughly but no changes.
Here are some screenshots taken with a camera and a video captured though my framemeister.
Funnily enough the framemeister does a really poor job with this system while my TV on its own works much better. Screenshots are captured using the TV.
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
#2 NEO-AES3-5
This one has an interesting problem, it basically looks like there are scanlines applied to the image when none are applied. There are also rainbow like artifact on the image but I'm not sure if it's because I'm using a composite signal. I need to build a new RGB cable for these Neos. Not all the image look bad as you can see from the video but the problem is there. Sound is perfect and you can play no problem. Again the Framemeister doesn't like that system either, looks better through TV directly.
I think I found the origin of the problem, about 3-4 pin on the NEO-B1 chip appear to becorroded and it looks like some of the traces have been eaten away, probably a leaky cap earlier in its life? I just wanted to double check before I start operating it, if the NEO-B1 could be the culprit here and what would be the best course of action here? It's a very delicate repair and I'd probably do a bypass rather than trying to fix it in situ.
Thanks for your help in advance
I wonder if anybody could give me some pointers, I have 2 AES which I am restoring at the moment with an interesting number of video faults.
#1 AES NEO-AES3-4
This one looked like an easy fix, when I first saw the motherboard. The previous owner had cut the bios off and kept the legs to solder a socket on top of it for I guess a Unibios or something similar. Previous owner kindly left a fully work bios. When turned it on, it only displayed a white screen, flickered and made a clicking sound. My conclusion was bad bios installation.
What I did is remove as delicately as possible (took me 2-3 hours) the socket, the previous legs and re-seated the bios. In hindsight I should have fitted a new socket, I've ordered some but they haven't arrived yet...
After bios re-seat the console magically started and displayed the NeoGeo splash screen almost perfectly (see screenshots) however the intro scren of the game I use for testing, Samurai Spirits is all white with some garbage graphic displayed at the top. I can play the game, the sound is perfect, but the gameplay is plagued by white vertical bar. I tried cleaning the cartridge thoroughly but no changes.
Here are some screenshots taken with a camera and a video captured though my framemeister.
Funnily enough the framemeister does a really poor job with this system while my TV on its own works much better. Screenshots are captured using the TV.
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
Neo Geo AES Bios re-seat by 470s, on Flickr
#2 NEO-AES3-5
This one has an interesting problem, it basically looks like there are scanlines applied to the image when none are applied. There are also rainbow like artifact on the image but I'm not sure if it's because I'm using a composite signal. I need to build a new RGB cable for these Neos. Not all the image look bad as you can see from the video but the problem is there. Sound is perfect and you can play no problem. Again the Framemeister doesn't like that system either, looks better through TV directly.
I think I found the origin of the problem, about 3-4 pin on the NEO-B1 chip appear to becorroded and it looks like some of the traces have been eaten away, probably a leaky cap earlier in its life? I just wanted to double check before I start operating it, if the NEO-B1 could be the culprit here and what would be the best course of action here? It's a very delicate repair and I'd probably do a bypass rather than trying to fix it in situ.
Thanks for your help in advance
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