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- Apr 8, 2020
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Are your voltages all reading as expected?
Also, when you LMAO Bugged your U10, did you check that you hadn't shorted 3.3v to GND? There's a 3.3v via right under the U10 in that spot
This trim + Nand relocation was a commission I received, and I got confirmation of it working and displaying video before it shipped.
When you do the resistance check you must first disconnect the PMS from the Wii. If it's still wired in, it will skew the readings. Use the 20k ohm setting for 3.3v and 2000 ohm for everything else. Ignore continuity, it's irrelevant here so long as no resistance is below 10 ohms.In voltage mode,
1.8 V ≈ 1.6 V
3.3 V ≈ 3.25 V
1.0 V ≈ 0.95 V
1.15 V ≈ 1.1 V
In Continuity mode,
1.8 V continuous beep
3.3 V shows continuity
1.0 V shows continuity
1.15 V continuous beep
In resistance mode,
1.8 V ≈ 6
3.3 V shows nothing. Just stays at 1 without fluctuating.
1.0 V ≈ 135
1.15 V ≈ 2
When you do the resistance check you must first disconnect the PMS from the Wii. If it's still wired in, it will skew the readings. Use the 20k ohm setting for 3.3v and 2000 ohm for everything else. Ignore continuity, it's irrelevant here so long as no resistance is below 10 ohms.
Use this table to record your results and post a snip of it here when you're done.
20k for 3.3V, 2k for everything else.Don't forget to check your resistances in the other rows like 1V to 1.5v, 1v to 1.8v, 1.8v to 3.3v, ect.. All of your values look super low, are you sure you are measuring correctly with your multimeter (sometimes it shows it as 0.XXX thousand OHMs). The reason I am saying this is all your measurements would be good if they were multiplied by 1k.
Then you should check the resistance values to ground for each voltage. The NAND may have been normal before shipment, but there's no guarantee that the bumps during transit didn't cause the NAND solder pins to detach. You still need to re-inspect the NAND pins.
You have a short somewhere on the 1.15v line. 3.3v looks fine, so the U10 relocation is good and NAND flex is probably good.
You have a short somewhere on the 1.15v line. 3.3v looks fine, so the U10 relocation is good and NAND flex is probably good.
Can you complete the table by measuring the resistance between each voltage rail and the other voltage rails? Just for posterity while I try to figure out how tf 1.15v is shorted to GND
Hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm. Everything aside from the 1.15v to GND short looks acceptable.
Hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm. Everything aside from the 1.15v to GND short looks acceptable.
I guess we need to find that short. Fortunately there aren't many places that 1.15v can easily find GND. First we should check the edge of the trim right below the big 1.15v capacitor. Can you provide a clear and close photo of the trim edge in that area? Ideally one that clearly shows the PCB layers in good lighting so I can look for solder wisps or curled copper.
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?
Correct. Black probe goes on the location in the column, red probe goes on the location in the top row.Just to be clear, this column was supposed to be the COM, where I put the black probe, right?
View attachment 40938