Well, I took a chance on a NeoGeo AES sold as untested (Internet code for we know it's broken). It gives me a greenish blueish screen which I understand relates to a graphics problem. So, I open it up, and on the whole, it looks reasonably good. However I get to the LSPC2 and WOAH! What the hell happened here? It looks like someone stumbled and fell onto the unit with a soldering iron in their hand. The chip seems to have been reworked due to the flux residue around it. All the pins look fine until you get to the top side. So, of course - this would be the device with the finest pitch on the whole board... I think I'm going to need the microscope to see if just putting the legs back where they should and trying to remove any obvious bridges is enough... Question: if this chip is fried - can I lift one from a 1 slot MVS board and use that in it's place? Taking a donor off with hot air is going to be easy enough - I've done this sort of thing before with success.
I repaired a 2slot MVS for Fandangos in 2013, I believe. Rat made the unit a nest and pissed on the LSPC chip. I had to mend a lot of traces and replace the LSPC chip.
This just reinforced the need for testing and licensing requirement to touch a soldering iron, and a stiff fine for people who stabs a random soldering iron into complex project like this with no experience.
