Heat bed shows room temp not heating

Printer has been working great but heat bed has stopped heating.
Thanks
Neal

 

I have been printing non stop since I received the unit a week or so ago. I had just completed a small print job when I went to print the 2nd item the bed would never heat back up the temp kept dropping until room temp. I have tried cycling power etc nothing changes .
Neal

 

I tried to print again and now the bed is not heating up. I am measuring 12.17 V at the thick black lines.

 

I think I found the problem need to run. The problem is one of the black wires is severed. I have pictures will show later

 

Ok, here is the issue. where the heat shirk ends near the heat bed is going to cause you issues. I think while printing this will wiggle the wires back and forth causing friction and heat eventually cause the wire to break at this point. I uploaded some pics hope it helps. you might want to redesign how the heat bed is connected or add addition support at that point. I reattached the wire and the heat bed is working
Regards
Neal

 

Looks like soldering the wire with a patch didnt work looks like I will need to run a new wire my patch fell off.