Question Pulsing "countdown" voltages

[Conron]

Hey all, attempt number 2 with making one of these dang portable wiis. I seem to be having a unique issue. I just finished the trim and decided to test a test wire with my pms 2 and one battery cell along with a scrap composite cable.
I wired up everything to the pms and, at first, I could see the correct voltages were being sent over to each spot but I wasn't getting any video out. I was about to post about no composite out and then I went to power the Wii back on to double check, and nothing.
When I put the multimeter to any of the solder points and ground, specifically the 3.3v, it will show .4v, then .34, .2, and onward until it reaches .01v, and the cycle starts over again. What do these weird countdown pulses mean? Thanks

 

[Stitches]

We'll need photos of all the wiring in order to help with this

 

[Conron]

We'll need photos of all the wiring in order to help with this

Hey Stitches, I figured out the problem with the voltages. I haven't charged my cells since I got them so I just needed to run 2 in series. All voltages look good now.
However...
Still no video out. Using a multimeter I can clearly see there's about .28v going through the line but I'm not getting any picture. Attached are some images of the video wiring.
The composite wire snapped and I had to resolder it but I don't think that's the issue

 

[Stitches]

Hey Stitches, I figured out the problem with the voltages. I haven't charged my cells since I got them so I just needed to run 2 in series. All voltages look good now.
However...
Still no video out. Using a multimeter I can clearly see there's about .28v going through the line but I'm not getting any picture. Attached are some images of the video wiring.
The composite wire snapped and I had to resolder it but I don't think that's the issueView attachment 35147View attachment 35148

Nonononononono not series, the PMS is a 1S system you need to put the cells in parallel! Positive to positive, negative to negative. Series will kill the PMS

Also those photos aren't helpful. We need to see the Wii, the PMS, and the batteries

 

[Conron]

Hey there, that's my bad . It's all wired up in Parallel but still no difference. Luckily the pms isn't dead thank you for the heads up. Here's a bunch of images. I wouldn't be surprised if it was f'ed up because of my shoddy soldering but nothing is shorting. I know the 1.8 looks close but I tested with a multimeter and it seems all good. All the resistances from the pms to ground look good. Also the scoring next to that trace headed to the GPU doesn't seem to have exposed any copper, just used too big of a dremmel

 

[Stitches]

You can remove the 1.8v wire btw. The PMS-2 doesn't need a reference voltage from the Wii, and if you're leaving the LDO on the Wii it's best to not connect the two to prevent interference

 

[Conron]

You can remove the 1.8v wire btw. The PMS-2 doesn't need a reference voltage from the Wii, and if you're leaving the LDO on the Wii it's best to not connect the two to prevent interference

Hey I removed the 1.8 wire and now it's back to the countdown. I thought maybe it was the batteries so I replaced the cells with ones at 3.52v and still doing it

 

[Stitches]

3.5v is still a bit low. I'd give them a full charge and try again.

Also, did you sand the edges of your trim? I'm seeing a lot of flaky edges, expecially around the NAND legs, that normally indicate a lack of proper sanding. You've also lost one of the 3.3v filtering caps for the NAND and may need to relocate the 3.3v and GND feeds for that side of the chip