we are way off course here folks, but I like serial for breakfast. On Wed, Jan 20, 2021 at 2:09 AM Bastien Durel <[email protected]> wrote: > > Le mardi 19 janvier 2021 à 14:52 -0700, Diana Eichert a écrit : > > Hello > > > > Having spent way to many years working on serial devices it looks to > > me like either Rcv pin has noise on it because it is floating. If I > > remember correctly you can try a resistor between rcv and ground. > > > > diana > Hello, > > Thanks for the hint, but this is -- like Stuart's -- over my reach. I > have no soldering skills or tools, and the pins are very small[1] :(
This is not as hard as you think. Get a couple (it is good to have extras and they are pretty cheap) RJ45-DB9 adapter, the pins will not be inserted in DB9 connector, therefore you can perform some wire surgery. Break open the RJ45 side, cut the cables from RJ45 connector. Now depending on whether this is DCE or DTE RCV can be pin 3 or pin 2, Ground is pin 5. Acquire a 50k ohm resistor, several small gauge wire nuts. Connect one wire with one end of resistor and twist on wire nut, do the same with the other end of the resistor. Insert one cable onto pin 5, the other to pin 3. Then test if you can reboot the system. If this doesn't work move the cable on pin 3 to pin 2. No soldering required and if it works you can pat your self on the back and tell everyone you are a hardware hacker. :-) diana
