Question AVE showing no video output

[Ottoman Luigi]

The trim edge looks clean, but yeah that flux blob might have a solder wisp in it. Can you clean the flux off with some isopropyl alcohol and make sure to remove any blobs or wisps?

Did and remeasured:

Correct. Black probe goes on the location in the column, red probe goes on the location in the top row.

Yeah, that's what I thought I did the first time. I think I mixed some things up, so I remeasured and got different results.

 

[Stitches]

Those readings look much closer to the expected range. Still a 1.15v short to GND somewhere though................

 

[Ottoman Luigi]

Those readings look much closer to the expected range. Still a 1.15v short to GND somewhere though................

Should I remove the capacitor, clean the area, then put it back?

 

[Stitches]

Should I remove the capacitor, clean the area, then put it back?

You can try that, yeah. Just be very careful to not rip up the pads when doing it

 

[Ottoman Luigi]

You can try that, yeah. Just be very careful to not rip up the pads when doing it

I took it out and cleaned the area. Then I remeasured it without the capacitor. I got similar results. Are there any other tests or things to look for to figure out what's causing the short?

 

[Stitches]

I took it out and cleaned the area. Then I remeasured it without the capacitor. I got similar results. Are there any other tests or things to look for to figure out what's causing the short?

Honestly this one is a toughy. The 1.15v voltage traces and vias only exist in a very small part of the motherboard. I have circled that portion in red, the blue dots are 1.15v locations.
Top PCB face:

Bottom PCB face:

The short is somewhere in that circle. If you can post some clear photos of that section of your trim, I can look for anything obvious, but you'll have a better chance eyeballing it under a magnifying glass from several angles.
I recommend checking the via I have marked with a red arrow first. It's on the GND side of the big cap and the most likely to get accidentally blobbed.

 

[Ottoman Luigi]

Honestly this one is a toughy. The 1.15v voltage traces and vias only exist in a very small part of the motherboard. I have circled that portion in red, the blue dots are 1.15v locations.
Top PCB face:
View attachment 40970

Bottom PCB face:
View attachment 40968

The short is somewhere in that circle. If you can post some clear photos of that section of your trim, I can look for anything obvious, but you'll have a better chance eyeballing it under a magnifying glass from several angles.
I recommend checking the via I have marked with a red arrow first. It's on the GND side of the big cap and the most likely to get accidentally blobbed.

I couldn't find anything. I guess I'll just do the trim. Is this outline correct for LMAO 2?

I placed my commissioned trim on the Wii and traced. I just want to double check since I never did LMAO 2 before.

 

[Ottoman Luigi]

I did the LMAO 2 trim and got these results:

Here is the trim. I don't have good lighting now.

I accidentally scratched into the ground plane with my dremel. Not sure how far it goes, or if it even affects the trim.

Here is the 1.8V tantalum capacitor relocation:

I'll try to post the rest of the edges tomorrow. Hopefully with better lighting.

 

[Ottoman Luigi]

I'll try to post the rest of the edges tomorrow. Hopefully with better lighting.

I can't quite figure out what is shorting 1.8V to ground.

 

[Stitches]

All looks good aside from that 1.8v to GND short. Like 1.15v, 1.8v only exists in a very small area. Specifically around the RAM and AVE chips, so with any luck this will be easier to find than the previous short.
On the top and bottom faces, the green marked spots are the only 1.8v surface pads.

The internal voltage layer is completely within the boundaries of the LMAO trim. In this case the short can only be coming from a solder blob or solder wisp on the surface of the board by one of the marked locations, or possibly between the old 1.8v tantalum cap location and the internal GND layer. The circled pad from the old cap location is the 1.8v side, so I'd give that a closer look and perhaps a scrape to be sure there isn't a tiny hair making contact between the cut-through solder and the internal GND layer. Also the circled little cap on the left looks like it's covered in flux goop that could be hiding some conductive particles, it needs a clean.

 

[Ottoman Luigi]

I ended up getting rid of the short, but I couldn't get the NAND relocation to work. With regards to my first board, I'm guessing the 1.15 got shorted around here, probably from the solder mask getting damaged and giving way to the ground plane.

Could I trim this part off and relocate the 1.15V tantalum capacitor, like what I see being done in some Omega trims? (Possibly with a 1.15V capacitor taken from a 6 layer board?)

 

[CrazyGadget]

From your pics, it doesn't look like that 1v15 point is shorted to the ground plane, even though the solder mask has been lifted off. For reference, here is what that area looks like in the compendium:

Trimming that section off and attempting the relocation used for the FD OMEGA would likely lead to more shorting, as it requires digging to the voltage layer, leaving a portion of ground plane exposed on the bottom layer: