had a (self) modded switch with a Hwfly v5 chip for over a year now and has been working fine until last week, it ran out of battery and won't turn on. purple flashing then solid red.
I cracked it open and it seems the dat0 connection has given up, getting 1.5v on diode mode. However this is where things get weird.
If I check from the c point on the friction flex pcb, I get a clean 0.77ish V, so the contact there is still good, now if I solder a wire from that to the hwfly chip, and test the point on the chip to ground, 0.77-8V again. but as soon as I put the cover on the eMMC chip, it jumps up to 1.5V every time. I've re-soldered with different wire 3 times and practically mummified the thing in kapton tape and it still breaks the connection and gives 1.5V.
I've tried just testing the switch without the cover on and it gets the green light pretty quick.
Any ideas what it could be? it doesn't seem to be properly shorting to ground or anything? it's driving me crazy.
I cracked it open and it seems the dat0 connection has given up, getting 1.5v on diode mode. However this is where things get weird.
If I check from the c point on the friction flex pcb, I get a clean 0.77ish V, so the contact there is still good, now if I solder a wire from that to the hwfly chip, and test the point on the chip to ground, 0.77-8V again. but as soon as I put the cover on the eMMC chip, it jumps up to 1.5V every time. I've re-soldered with different wire 3 times and practically mummified the thing in kapton tape and it still breaks the connection and gives 1.5V.
I've tried just testing the switch without the cover on and it gets the green light pretty quick.
Any ideas what it could be? it doesn't seem to be properly shorting to ground or anything? it's driving me crazy.