Have you checked the Pi memory card for corruption? If Pi software doesn't talk to the tnc, everything may quit Sent from my Verizon, Samsung Galaxy smartphone

I have taken my TNC Pi off line and picked up a MFJ one to test with. Once get it working can debug the original board to get it working. I just hope the processor is not blown. Tim KM4ESU

That is correct.

Did you uncomment the line Force_hdmi=1 in config.txt? That forces the hdmi on even if it doesn't properly detect an HDMI monitor Get BlueMail for Android On Dec 7, 2020, at 11:24, Doug K7KY

Mark... Thanks for the speedy reply. I followed your advice and burned a new SD card. This time there was lots of green blinking which finally stopped leaving only the red LED on. Still no

Your SD card is bad. You'll have to make a new one. Use a class 10 card for years of service. Mark KD0QYN

Hello... I'm new to the group.  My Rpi3B+ has been running an IC-7300 for nearly a year, but suddenly no HDMI output.  At boot, the green led was still blinking, but no HDMI. After fiddling around

Depends how old it is. Early versions of the firmware didn't have the txdelay pot reset feature. 73, John G8BPQ On 06/12/2020 22:43, Tadd KA2DEW in NC via groups.io

so we know that both LEDs are hooked to the CPU and that the CPU can light them. The question then is why doesn’t it blink the correct pattern when the CPU is booted with the TXDELAY pot rotated to

or the tower of Babel if you prefer LOL boots and runs off a Samsung 860 EVO 500GB SSD drive

yep, along with a Nexus dual controller/TNC hat, Pi-FE audio card etc. I call the stack Godzilla LOL No issues

They blink only once. Tim

When the TNC is rebooted or powered up the start sequence blinks the lights. Mark KD0QYN

Yes there are many and no issues. Mark KD0QYN

Does anyone have the TNC Pi 9600 running on a a RPi 4? Any issues or??? thanks Mike KE7TJK

Hi John N0JDS. It's almost a year since your post, but I wanted you to know that your thread here saved the day. I had just about given up! I've configured a Raspberry Pi 4 B and 400 for WSJT-X, and

Yes both LEDs blink when you add power. I assume the processor see power and blinks the LEDs Tim

Update on this. Was using the separate RPI for rig control on 40M and started getting the freeze ups again. Turned off rig control and it works fine. So back to work figuring out the issue.

The tip on adjusting alsamixer did the trick on the 3B+, 4B and even the zero, HOWEVER, the received text via the Signalink USB is garbled on the zero w. I cannot imagine the zero shouldn't work with

Oh, also fail2ban and ufw to enhance security. -- John D. Hays Kingston, WA K7VE