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Thread: Heated Bed Suddenly Not Working.
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03-31-2016, 12:23 PM #1
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- Jul 2014
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Heated Bed Suddenly Not Working.
So today I went to print and the heated bed just doesn't heat anymore. I am using a SSR and I double checked all of my wires and everything is plugged in. My hotend does heat just not the bed.
I am using a Rumba Board, any suggestions? May it be the power supply.
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03-31-2016, 03:18 PM #2
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- Dec 2014
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- Canada
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same power supply for both?
fuse blown?
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03-31-2016, 03:19 PM #3
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- Nov 2014
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have you checked with a volt meter to check that the power is switching on and off the the SSR, and that the gate on the SSR is functioning? and also, that the PS is supplying 12V then continuity along the lines to see if the wiring has burned up somewhere.
among those checks you should diagnose that its either the board the PS the SSR or the wires themselves.
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03-31-2016, 03:29 PM #4
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03-31-2016, 06:24 PM #5
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04-01-2016, 07:46 AM #6
It's hard to provide exact instructions when we don't know exactly how you have the SSR and bed wired. Does the + from the power supply go to the SSR first, or to the bed first?
the difference on the out is 0
The voltage difference on the input is 12v
One easy thing to try would be to temporarily jumper across the SSR output terminals or remove both output connections from the SSR and connect them together. Turn on the printer and see if the bed starts to warm up. If it does, and the SSR control input is known to be working, you pretty much know you have a bad SSR. If the bed still doesn't heat up, there's a problem in either the wiring or the bed itself.
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04-01-2016, 10:35 AM #7
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- Jul 2014
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I apologize for not responding sooner but yesterday my computer was taken over by Ransomware the same time my printer stopped working and had to put my printer to the side to get my life back together.
Late last night I found the issue. I was testing every connection for continuity and found that from the PS to SSR I was getting no continuity. So I unscrewed the wire from the SSR and found that the wire oxidized and there was a little burn mark on the SSR plastic. Which is really interesting as I use high quality silicon wire and that is why the plastic shielding didn't melt but the wire experienced a spike in current or volts and become unusable. So I replaced the wire and we are working again.
Here is a picture of the oxidized wire next to what it should look like:
https://scontent.xx.fbcdn.net/hphoto...fe&oe=578C7A03Last edited by BLKKROW; 04-01-2016 at 12:17 PM.
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04-03-2016, 01:02 PM #8
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- Jul 2014
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Just in case if anyone is watching this thread.
So I thought I had the issue resolved but after further testing, when I head the bed I smell burning electronics. So I determined my Solid State Relay is dead as there is a tiny burn mark near one of the terminals.
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04-06-2016, 09:41 AM #9
- Join Date
- Apr 2015
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- Milwaukee, WI
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- 1
Do you have a link to which SSR you bought and from what source? I might be buying one and am a bit concerned about buying an inferior, cheaply cloned SSR vs a "real" one, considering it's importance and how I'd like my house to not burn down.
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04-06-2016, 11:24 AM #10
Ender 3v2 poor printing quality
10-28-2024, 09:08 AM in Tips, Tricks and Tech Help