So, I've run across two boards thus far that have the same exact vaporized trace between the OMRON board connector and the EMI filter that's connected to VGA ground.
WTF is happening here?
In each case, there's been a shoddy repair, and for the most part, they seem to work, but it seems a bit wierd this has happened.
I see that there's a dedicated trace for pin 9 (+5V) on the Naomi VGA port (even though I can't imagine that it has ANY EDID support in its graphics subsystem)
Does the Naomi simply pipe system 5V direct to that pin, and as a result, when connected to a vga cable wired with 5-10 to ground, simply burn through the trace mentioned?
Pin 9 USED to be unused on old monitors, but is now used for +5v for the EDID chips in newer monitors, and many diagrams online show 5-10 all being tied to ground, however this is ONLY acceptable (still not recommended) on the HOST side of the connection.
or.. is something else causing these traces to burn?
WTF is happening here?
In each case, there's been a shoddy repair, and for the most part, they seem to work, but it seems a bit wierd this has happened.
I see that there's a dedicated trace for pin 9 (+5V) on the Naomi VGA port (even though I can't imagine that it has ANY EDID support in its graphics subsystem)
Does the Naomi simply pipe system 5V direct to that pin, and as a result, when connected to a vga cable wired with 5-10 to ground, simply burn through the trace mentioned?
Pin 9 USED to be unused on old monitors, but is now used for +5v for the EDID chips in newer monitors, and many diagrams online show 5-10 all being tied to ground, however this is ONLY acceptable (still not recommended) on the HOST side of the connection.
or.. is something else causing these traces to burn?
