Switch OLED teardown V1/V2
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ah! I hadn't considered a pcb thin enough to slot under the emmc. that should greatly help with alignment
wasn't expecting to see such a fully-formed solution so quickly as well; very good job 
Only my prototype that I made with a fpcb ( thickness: 0.1mm) that I cut to the right size.
How did you connect to dat0? Did you pretin the point on your PCB and applied hot air, once it was in place to join the ball?
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I was talking about this with a friend of mine yesterday, but I was talking about those 0.1 enameled wires. They are very malleable though.I was originally quite skeptical of the possibility of a solution similar to the corona postfix adapter due to the clearance, depth, and pitch of the emmc's BGA, but I was in fact able to snake a tinned magnet wire under the chip and get continuity to the dat0 test point on a switch lite board. I will be looking into this further; I am certainly not opposed to the hot air rework method, but also would not mind if it was rendered unnecessary
What's this "magnet" wire you're talking about?
No, I thought I would slide the fpcb upwards and then fix the fpcb with the 3 anchoring points.
1- pull the fpcb down then weld point 1.
2 - to the right and weld point 2
3- Fix the Fpcb position with point 3.
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This will by "tricky" to do on the OLEDs since the eMMC is "enclosed" in those metal frame. Right?
Also, what did you use as the "needle"?
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Just trying to make sure we're talking about the same thing
I was talking about the "frame" around the eMMC, not the "shield" on top of the eMMC.
I know the "frame" can also be removed although it'll be a little bit trickier.
Cheers!
Layout pictures for SX Lite/HWFLY Lite
imgur:
Reference: https://www.bilibili.com/video/BV1Wq4y197i6/
imgur:
Reference: https://www.bilibili.com/video/BV1Wq4y197i6/
Last edited by HenryMin,
yeah can confirm tried this out a few days ago slides right in
would still need heating the bga
gl aligning it cause it will kill the chip if you mess up
Ya good point. I heard the 2 pins on the corner (let's call it pins 1 and 2) don't do anything so bridging those probably won't kill the chip...but bridging point C (pin 3) and the one beside it 'pin 4' definitely would kill it....ya...that's risky
OK. Guess I will patiently wait for my BGA 153 stencil The two pins you mentioned are not connected inside the eMMC but the pins on the board could be connected to ground.Ya good point. I heard the 2 pins on the corner (let's call it pins 1 and 2) don't do anything so bridging those probably won't kill the chip...but bridging point C (pin 3) and the one beside it 'pin 4' definitely would kill it....ya...that's risky
So bridging them COULD cause issues in DAT0 touches them.
We need to wait for a proper PCB delayer to see that is connected to where.
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