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Soynuts
(@soynuts)
Active Member
Melted power connector

So previously I had an issue with my "Power In" connector for the heated bed. It was a bit burnt, but nothing major. But it was enough to cause it to stop the current. So I replaced it with a new connector and everything was good... for about 2 days. The connector now looks like this. I've attempted to remove it, but there it melted so bad that I can't get it all out of the connector. The wires were so hot that they actually melted through my rambo case.

Is it safe for me to just solder the wires to the back of the board?

Posted : 01/12/2017 10:37 pm
Soynuts
(@soynuts)
Active Member
Topic starter answered:
Re: Melted power connector

Went ahead and just soldered the wires to the back of the rambo since the pins were too messed up. No problems so far and hopefully it stays that way. I also put some kapton tape over the soldered joints just to help shield it some.

Posted : 02/12/2017 3:40 am
rob.l6
(@rob-l6)
Honorable Member
Re: Melted power connector

Do you know what the cause of your original power issue was?

Posted : 02/12/2017 6:16 am
james.b2
(@james-b2)
Active Member
Re: Melted power connector

I have been having the same problem. I have heard there are safety issues with soldering the wires directly to the bed, but at the moment I am having trouble finding a replacement for the connector. Do you know what the connector type is called? How is it working for you, soldering the wires directly to the board?

Posted : 04/12/2017 10:00 pm
BillC
(@billc)
Reputable Member
Re: Melted power connector

@james.b2

Do a search for MOLEX connectors.

cheers,

Bill
Tagaytay City, Philippines
Founder member of Philippines Prusa Printer Owners FB Group
Sponsor Pillars of God Academy in Bacoor

Posted : 05/12/2017 4:12 pm
james.b2
(@james-b2)
Active Member
Re: Melted power connector

Cheers.

After an exhaustive search we found the connectors we needed. I bought both the male and female parts in case the male needed replacing as well.

I replaced the (female) connector and the heat coming off of the connector is extraordinary. I'm afraid it will melt again and so I've just powered off. I do not have a lot of experience soldering so I am thinking I will just take the board into a store and see if they will solder my new connector (male) onto the board replacing the old one. I'm hoping with both halves of the connector replaced and soldered properly in place the issue should disappear.

However, I'm wondering how much heat is normal for this connector to be producing? With mine it's too hot to touch (which I think is not normal).

Does anyone know who much heat is within a tolerable range for this component?

Cheers,
James

Posted : 06/12/2017 10:19 pm
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