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I'm melting...
Posted: Tue Sep 30, 2014 12:25 am
by LonV
Okay, well I'm not, but the power connectors are.
Any idea what would cause this? It's a relatively new Rambo board with the older 19/12v power supplies.
- IMG_7827.jpeg (210.1 KiB) Viewed 8716 times
Thanks,
Lon
Re: I'm melting...
Posted: Tue Sep 30, 2014 1:04 am
by jimc
lon, yes i think that happens to most of the pre 24v machines. the connector on the rambo is borderline rated high enough to handle the heated bed. you can be fine for a long time but then you lose just a little connection and enough heat builds up and it starts melting. best thing you can do is remove the connector from the board and solder wires directly to the board. use a high amperage connector between so you can disconnect the power supply.
Re: I'm melting...
Posted: Tue Sep 30, 2014 1:15 am
by LonV
Are the connectors the same for the 24v supply (via upgrade)?
Re: I'm melting...
Posted: Tue Sep 30, 2014 1:17 am
by jimc
yes but with 24v there is less current being pulled through the connector. in any case the connector on the board and the wire end need to be replaced. if you clean them up at this point it will only do it again. just get rid of it all together.
Re: I'm melting...
Posted: Tue Sep 30, 2014 1:19 am
by jimc
another option is to use the build plate output to switch a solid state relay so the relay handles the current.
Re: I'm melting...
Posted: Tue Sep 30, 2014 1:38 am
by LonV
Okay Jim, thanks for the info!