Bed Not Heating

Yesterday I finished a print, everything seemed normal, printing at 70c bed temp. My next print that day, the bed started warming but before it got to 70, it crashed due to heater not heating at expected rate. SSR lights up red, when heater is at 100% I'm showing a 0.4v drop across the switched side of the SSR, and across the leads of the bed I'm getting infinite resistance. Ideas? If it's a thermal fuse, why would that have happened, and is that even replaceable? For context, it's 110v and the printer has a few hundred hours on it.
15 Replies
blacksmithforlife
Yeah not sure what happened, but sounds like the fuse blew. You will have to cut it out to replace (use crimps, not solder)
Dante Tango
Dante TangoOP15mo ago
Just peel back the adhesive on top?
Dante Tango
Dante TangoOP15mo ago
No description
Dante Tango
Dante TangoOP15mo ago
I'm assuming the top square?
blacksmithforlife
I believe it is the top one
cgrr
cgrr15mo ago
You should be able to pull it out of the sleeve (the longer one) without undoing the adhesive. You will probably have to trim the new fuse to match the old one and most likely you will need new crimps.
Dante Tango
Dante TangoOP15mo ago
Why crimps instead of solder?
blacksmithforlife
because it is a thermo cutoff. It will be get hot enough to mess with the solder
Mr.Robot
Mr.Robot15mo ago
what kind of thermal fuse does it need VC 3.1 500 so a 120V 1600W pad but the odd part is it reads 120V across the fuse
blacksmithforlife
sounds like it isn't the fuse then
Mr.Robot
Mr.Robot15mo ago
Thermistor issue??
blacksmithforlife
¯\_(ツ)_/¯
Mr.Robot
Mr.Robot15mo ago
i send the command and then nothing happens
blacksmithforlife
you should probably start your own post as per https://discord.com/channels/582187371529764864/1047086745415594044
Mr.Robot
Mr.Robot15mo ago
psoted, but now a plot twist lol

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