20-09-2015, 03:18
Hi,
I have just completed my very first build of the Rx and Tx units. My Rx unit is working perfectly, but the Tx LED on the Tx unit isn't flashing.
As per the suggestion below, I have measured the voltage at both the power supply and output of the 7809 and they are 11.88V and 8.90V respectively. When I measure the voltage between the Vcc and Gnd, at the base of the FS1000A, I only ever see around 0.57V. I have checked the soldering around the joints of the FS1000A and have resoldered, but still it does not work.
Is it possible for somebody to suggest what component(s) I should look at, to ascertain where the issue may lie, as I am only a beginner at electronics.
Any help would be very much appreciated.
Thanks
I have just completed my very first build of the Rx and Tx units. My Rx unit is working perfectly, but the Tx LED on the Tx unit isn't flashing.
As per the suggestion below, I have measured the voltage at both the power supply and output of the 7809 and they are 11.88V and 8.90V respectively. When I measure the voltage between the Vcc and Gnd, at the base of the FS1000A, I only ever see around 0.57V. I have checked the soldering around the joints of the FS1000A and have resoldered, but still it does not work.
Is it possible for somebody to suggest what component(s) I should look at, to ascertain where the issue may lie, as I am only a beginner at electronics.
Any help would be very much appreciated.
Thanks
(07-09-2015, 02:54)Werk_AG Wrote: If the TX Led blinks, the FS1000A is being powered, but just to be sure, you can:
Check the voltage of your power supply.
Check the voltage at the output of the 7809