This week my (several years old) HT802 has started malfunctioning. Whenever I unhook the receiver I get a click, then a dead line. If I look at the unit, all the blue lights on top turn off. The network socket light stays on. And it reboots, as if I had just re-plugged in.
I tried both FSX with the same result. One being configured, the other not. I also tried a factory reset. Still happens with factory settings. If I don’t touch the phone receiver, everything seems to be working fine. I can browse the web admin portal. It registers with my provider. Syslog with debug level looks normal… no error messages when I unhook; it just immediately stops logging altogether, until the boot sequence starts.
I have been running FW 22.214.171.124 since it came out without issues. Updated the firmware several times since I got the unit. Nothing else has changed recently.
I’m basically looking for ideas to troubleshoot. I suspect some power issue, maybe the power supply dropping, or a short circuit somewhere on the line.
My phone is an old panasonic cordless KX-TG4031C and I don’t have another one on hand to test. I will ask my neighbors tomorrow if they have one I could borrow. I was also thinking of getting a voltmeter to check the power supply output.
Until then, thank you for your help.