Tengugurl
Cheng's Errand Boy
- Joined
- Feb 9, 2017
- Posts
- 111
Hey there Neo Geo gurus!
I've got an AES that had a failed unibios install. As Gadgetuk would say, this poor board got attacked lol ps love your vids!
Here is my worklog, let me know what you think could be the problem as I am unsure where to go next.
Background:
AES rev 3-6 JP - uses- POW PRO3 psu
Failed unibios. Working board prior to failed install.
Damage report:
Damaged traces near the bios socket (underneath)
2 damaged pads on bios holes
Wavy PCB (bent) as an air desoldering gun was used
Bent stock bios (prying and heatgun)
Worklog:
1) Inspected board
A. 4 traces damaged under bios from pry marks
Solution: Jump wires used and full continuity
B. Noticed lots of little scratches from prying under bios
Solution: Checked continuity and all passed
C. Damaged solder pads on bios
Solution: attempted to trace fix the board (aka check
continuity to all chips i.e 68k, neo DO, work rams...)
Continuity =passed after having to do 3 major jump
wires from 68k and E0
Installed sip sockets to drop in some diagnostic bios
2) Verified work
A. Turned on the console and still getting click of death
Odd things I am noticing:
1. Clicks are sporadic (sometimes) = trace cut?
2. With a game in no clicks (sometimes) =garbled screen
3. Fast clicks =something is missing major (68k etc..)
4. Screen shows blue (aka passes hardware test) but has wavy Yellow and magenta colors on the top part of the screen
***YouTube video if you want to see first hand what it's doing***
https://youtu.be/ThitMq_-8tM
Take away:
Continuity tests passed, bios fully installed and all traces should be good?
Still no luck!
I hope someone out there has some ideas, I am lost!
Looking forward to anyone's assistance.
Let's raise this AES from the dead.
It worked before
I've got an AES that had a failed unibios install. As Gadgetuk would say, this poor board got attacked lol ps love your vids!
Here is my worklog, let me know what you think could be the problem as I am unsure where to go next.
Background:
AES rev 3-6 JP - uses- POW PRO3 psu
Failed unibios. Working board prior to failed install.
Damage report:
Damaged traces near the bios socket (underneath)
2 damaged pads on bios holes
Wavy PCB (bent) as an air desoldering gun was used
Bent stock bios (prying and heatgun)
Worklog:
1) Inspected board
A. 4 traces damaged under bios from pry marks
Solution: Jump wires used and full continuity
B. Noticed lots of little scratches from prying under bios
Solution: Checked continuity and all passed
C. Damaged solder pads on bios
Solution: attempted to trace fix the board (aka check
continuity to all chips i.e 68k, neo DO, work rams...)
Continuity =passed after having to do 3 major jump
wires from 68k and E0
Installed sip sockets to drop in some diagnostic bios
2) Verified work
A. Turned on the console and still getting click of death
Odd things I am noticing:
1. Clicks are sporadic (sometimes) = trace cut?
2. With a game in no clicks (sometimes) =garbled screen
3. Fast clicks =something is missing major (68k etc..)
4. Screen shows blue (aka passes hardware test) but has wavy Yellow and magenta colors on the top part of the screen
***YouTube video if you want to see first hand what it's doing***
https://youtu.be/ThitMq_-8tM
Take away:
Continuity tests passed, bios fully installed and all traces should be good?
Still no luck!
I hope someone out there has some ideas, I am lost!
Looking forward to anyone's assistance.
Let's raise this AES from the dead.
It worked before
Last edited: