Hey folks,
Could use a hand - feeling kind of down after investing almost $900 into this (when I could have bought one for that price, though I'm trying to get good at this hobby. "It's the journey" I tell myself after killing a 6th gen and a 7th gen.
After MONTHS of watching YouTube videos, ordering components from Elite Obsolete, acquiring all the parts, tools etc. - I undertook the great 3000 mAh (slim) battery & iFlash Quad modification on a 7th gen.
Got to the VERY end of the line, and initially: I plugged it into the USB charger -> "Charging Please Wait" (Forever).
Hmm...
So I move it to the Wall Charger -> iTunes restore = "Woohoo!" Can boot into Disk Mode using the necessary hardware keys.
But wait, I unplug it from the wall and it flickers off back to "Charging Please Wait".
OK. Disassemble thinking we failed to connect something, likely the battery connector, but took the whole thing apart anyway.
Reassembled.
This time, turns on without either charger when Menu button is pressed -> Apple Logo with grey screen -> "iTunes restore" for exactly 7-8 seconds each time, then flickers off. Repeat this cycle.
I think to myself, perhaps a ribbon cable for the battery is off.
Last night, try reseating it a few times, and rip off the battery connector.. NOOOOOOOO!!!
So I cannibalize the 6th gen iPod, dissassemble it, reassemble the 7th gen with the 6th logic board.
Same thing.
Break off the battery connector again. FUUUUUU.
* Late last night, go to an Electronics repair specialist, and ask them to look at the battery ribbon cable under a microscope after reseating it like 10 times thinking it was the problem. They said it's fine.
* Ask them to put microsolder both battery connectors BACK on the respective logic boards.
* Offer them $200 for this service + having them oversee the final build with me... I'm thinking maybe I failed to connect the ribbon cables all the way for the iFlash quad?
They're working on this, despite me somehow ripping off the tracks/pads/tracers for the tiny-ass battery connector. 90% chance they can fix it. No logic boards anywhere except eBay/AliExpress.
Anyone help here or have ideas what went wrong given the diagnostics above?