Nope, and its a hard copy. Came from an ex-engineer from back in the day who designed peripherals for these beasts.
Hopefully from this, I can design replacement Hybrid ICs which are needed, because they are failing at an alarming rate. You know when they do because one day it works, then all of a sudden battery charging/levels go intermittent, and eventually it doesnt power on.
Also if you remove 1 of the 2 wires going to the 4 pin battery plug, it removes the reference and blows up ICs including the SWIM. because the 5.2V regulator goes out of regulation.
The reason why this happens, is there is a single 1.2v voltage reference in the Hybrid, and it provides the reference signal for ALL of the voltage regulators across the board. And guess what: It is powered by the battery sense line which is the top left corner of that 4 pin plug. So if you remove that voltage, while leaving the voltage present on the top right corner (2 wires for voltage), it loses the reference voltage. The loss of this causes the 5.2V to spike to your battery or worse, your AC adapter input which is 7.5V. This then in turn blows all the ICs that are the most sensitive to it. 1st being the SWIM.
Bad design.
Hopefully from this, I can design replacement Hybrid ICs which are needed, because they are failing at an alarming rate. You know when they do because one day it works, then all of a sudden battery charging/levels go intermittent, and eventually it doesnt power on.
Also if you remove 1 of the 2 wires going to the 4 pin battery plug, it removes the reference and blows up ICs including the SWIM. because the 5.2V regulator goes out of regulation.
The reason why this happens, is there is a single 1.2v voltage reference in the Hybrid, and it provides the reference signal for ALL of the voltage regulators across the board. And guess what: It is powered by the battery sense line which is the top left corner of that 4 pin plug. So if you remove that voltage, while leaving the voltage present on the top right corner (2 wires for voltage), it loses the reference voltage. The loss of this causes the 5.2V to spike to your battery or worse, your AC adapter input which is 7.5V. This then in turn blows all the ICs that are the most sensitive to it. 1st being the SWIM.
Bad design.