Hi, To start off I’m still learning as a hobby so i hope i can learn. So I got this Ipad mini 5th gen that came in no power and no charging. The usb ammeter shows no current and not detected by pc. Then i found out there is vcc main short at the PMIC. So when i lift the pmic, the short gone. After replaced the pmic, it still cant be turned only after i found out that there is a shorted cap on PP2V63_Nand and i removed that and the short gone. I also learn the that the PPVBUS voltage drop to 3.7v, so i suspect that the charging ic(not the hydra aka usb ic) is bad i guess. So i lifted it up and the 5v restored.
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So, the problem is when i connected to dcps, it start bootlooping even i dont prompt to boot yet. The current on dcps start from 100(ish)mA to 700(ish)mA (with screen connected) and repeat. Also when i put the old charging ic back it goes dfu mode.
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What else should i probe and does the charging ic is needed to boot properly because from what i know it doesnt( i guess?) I’ve checked the PP1v8_always diode value around 0.4 something. I appreciate any helps. Thanks[br]
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UPDATE :
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The problems:
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# Suddenly it can turned on normally, but it has charging problem, the moment I plugged in charger, it shorted. lifted up charging ic shorted gone and can be turned on.
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# The problem is that it automatically turned on even i dont prompt to boot.
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# It can turned on normally, but it has charging problem, the moment I plugged in charger, it shorted. lifted up charging ic shorted gone and can be turned on.
+
# It automatically turned on even i dont prompt to boot. Current on dcps start from 250mA and rises normally
Hi, To start off I’m still learning as a hobby so i hope i can learn. So I got this Ipad mini 5th gen that came in no power and no charging. The usb ammeter shows no current and not detected by pc. Then i found out there is vcc main short at the PMIC. So when i lift the pmic, the short gone. After replaced the pmic, it still cant be turned only after i found out that there is a shorted cap on PP2V63_Nand and i removed that and the short gone. I also learn the that the PPVBUS voltage drop to 3.7v, so i suspect that the charging ic(not the hydra aka usb ic) is bad i guess. So i lifted it up and the 5v restored.
So, the problem is when i connected to dcps, it start bootlooping even i dont prompt to boot yet. The current on dcps start from 100(ish)mA to 700(ish)mA (with screen connected) and repeat. Also when i put the old charging ic back it goes dfu mode.
What else should i probe and does the charging ic is needed to boot properly because from what i know it doesnt( i guess?) I’ve checked the PP1v8_always diode value around 0.4 something. I appreciate any helps. Thanks[br]
-
-
UPDATE :
# Suddenly it can turned on normally, but it has charging problem, the moment I plugged in charger, it shorted. lifted up charging ic shorted gone and can be turned on.
# The problem is that it automatically turned on even i dont prompt to boot.
Hi, To start off I’m still learning as a hobby so i hope i can learn. So I got this Ipad mini 5th gen that came in no power and no charging. The usb ammeter shows no current and not detected by pc. Then i found out there is vcc main short at the PMIC. So when i lift the pmic, the short gone. After replaced the pmic, it still cant be turned only after i found out that there is a shorted cap on PP2V63_Nand and i removed that and the short gone. I also learn the that the PPVBUS voltage drop to 3.7v, so i suspect that the charging ic(not the hydra aka usb ic) is bad i guess. So i lifted it up and the 5v restored.
So, the problem is when i connected to dcps, it start bootlooping even i dont prompt to boot yet. The current on dcps start from 100(ish)mA to 700(ish)mA (with screen connected) and repeat. Also when i put the old charging ic back it goes dfu mode.
-
What else should i probe and does the charging ic is needed to boot properly because from what i know it doesnt( i guess?) I’ve checked the PP1v8_always diode value around 0.4 something. I appreciate any helps. Thanks
+
What else should i probe and does the charging ic is needed to boot properly because from what i know it doesnt( i guess?) I’ve checked the PP1v8_always diode value around 0.4 something. I appreciate any helps. Thanks[br]
+
+
+
+
+
UPDATE :
+
+
# Suddenly it can turned on normally, but it has charging problem, the moment I plugged in charger, it shorted. lifted up charging ic shorted gone and can be turned on.
+
# The problem is that it automatically turned on even i dont prompt to boot.
Hi, To start off I’m still learning as a hobby so i hope i can learn. So I got this Ipad mini 5th gen that came in no power and no charging. The usb ammeter shows no current and not detected by pc. Then i found out there is vcc main short at the PMIC. So when i lift the pmic, the short gone. After replaced the pmic, it still cant be turned only after i found out that there is a shorted cap on PP2V63_Nand and i removed that and the short gone. I also learn the that the PPVBUS voltage drop to 3.7v, so i suspect that the charging ic(not the hydra aka usb ic) is bad i guess. So i lifted it up and the 5v restored.
So, the problem is when i connected to dcps, it start bootlooping even i dont prompt to boot yet. The current on dcps start from 100(ish)mA to 700(ish)mA (with screen connected) and repeat. Also when i put the old charging ic back it goes dfu mode.
What else should i probe and does the charging ic is needed to boot properly because from what i know it doesnt( i guess?) I’ve checked the PP1v8_always diode value around 0.4 something. I appreciate any helps. Thanks
Hi, To start off I’m still learning as a hobby so i hope i can learn. So I got this Ipad mini 5th gen that came in no power and no charging. The usb ammeter shows no current and not detected by pc. Then i found out there is vcc main short at the PMIC. So when i lift the pmic, the short gone. After replaced the pmic, it still cant be turned only after i found out that there is a shorted cap on PP2V63_Nand and i removed that and the short gone. I also learn the that the PPVBUS voltage drop to 3.7v, so i suspect that the charging ic(not the hydra aka usb ic) is bad i guess. So i lifted it up and the 5v restored.
So, the problem is when i connected to dcps, it start bootlooping even i dont prompt to boot yet. The current on dcps start from 100(ish)mA to 700(ish)mA (with screen connected) and repeat. Also when i put the old charging ic back it goes dfu mode.
What else should i probe and does the charging ic is needed to boot properly because from what i know it doesnt( i guess?) I’ve checked the PP1v8_always diode value around 0.4 something. I appreciate any helps. Thanks
Hi, To start off I’m still learning as a hobby so i hope i can learn. So I got this Ipad mini 5th gen that came in no power and no charging. The usb ammeter shows no current and not detected by pc. Then i found out there is vcc main short at the PMIC. So when i lift the pmic, the short gone. After replaced the pmic, it still cant be turned only after i found out that there is a shorted cap on PP2V63_Nand and i removed that and the short gone. I also learn the that the PPVBUS voltage drop to 3.7v, so i suspect that the charging ic(not the hydra aka usb ic) is bad i guess. So i lifted it up and the 5v restored.
-
So, the problem is when i connected to dcps, it start bootlooping even i dont prompt to boot yet. The current on dcps start from 100(ish)mA to 700(ish)mA and repeat. Also when i put the old charging ic back it goes dfu mode.
+
So, the problem is when i connected to dcps, it start bootlooping even i dont prompt to boot yet. The current on dcps start from 100(ish)mA to 700(ish)mA (with screen connected) and repeat. Also when i put the old charging ic back it goes dfu mode.
What else should i probe and does the charging ic is needed to boot properly because from what i know it doesnt( i guess?) I’ve checked the PP1v8_always diode value around 0.4 something. I appreciate any helps. Thanks
Hi, To start off I’m still learning as a hobby so i hope i can learn. So I got this Ipad mini 5th gen that came in no power and no charging. The usb ammeter shows no current and not detected by pc. Then i found out there is vcc main short at the PMIC. So when i lift the pmic, the short gone. After replaced the pmic, it still cant be turned only after i found out that there is a shorted cap on PP2V63_Nand and i removed that and the short gone. I also learn the that the PPVBUS voltage drop to 3.7v, so i suspect that the charging ic(not the hydra aka usb ic) is bad i guess. So i lifted it up and the 5v restored.
So, the problem is when i connected to dcps, it start bootlooping even i dont prompt to boot yet. The current on dcps start from 100(ish)mA to 700(ish)mA and repeat. Also when i put the old charging ic back it goes dfu mode.
What else should i probe and does the charging ic is needed to boot properly because from what i know it doesnt( i guess?) I’ve checked the PP1v8_always diode value around 0.4 something. I appreciate any helps. Thanks