Originally Posted by ppoo
I have the circuit equipped as the following: Is it right equipped ?
1N4148 - 200mA do-35 Switching Diode Semtech
VRM = 100V, VR = 70V, IF(AV) = 200mA, Ptot=500mW
Resistor R1/4W-J22K 22Ką5% 1/4W Though Hole Resistor
And USB TO COM PL2303 V1
Those parts should work. If not, you may have an LED that you need to remove, as mentioned above.
One of my USB serial adapters has the resistor and diode soldered onto it. One of my K4s has them soldered inside it. The "bottom half" of the circuit was not needed for any of my kindles after using a better ground point (not the GND pin at the serial connector.