SoliForum - 3D Printing Community — Solidoodle 3 heated bed blew

Re: Solidoodle 3 heated bed blew

2013-06-06T04:17:26Z

oh my god... the bed's resistance read 0, and still reads 0, except my multimeter can't read that low anyways... the bed's just fine.

well I guess once I resolder the wires to it I'll be all set while I wait for the heat sink to ship for my SSR. does anybody have any scotch? I really need some scotch right now

Re: Solidoodle 3 heated bed blew

2013-06-03T16:28:24Z

You're replacing the whole bed because of that one burned connector??
Just cut, strip the wires and install a new connector...

Or ship it to me... I ordered my solidoodle without a heated bed...

Re: Solidoodle 3 heated bed blew

2013-06-02T10:41:05Z

12v 15A for a 8" heated silicon pad is the minimum.... i advice to take something like 12v 20A or more..

Re: Solidoodle 3 heated bed blew

2013-06-02T00:08:03Z

So is the SD3 bed heater a silicon pad?

I find 12V does not get the bed hot enough and the unit needs an enclosure to get above 89 and the edges of the bed dont get hot enough (guess) and the back edges are warped downwards. (over 15 mil so the fillament wont stick there)

Re: Solidoodle 3 heated bed blew

2013-05-19T00:16:16Z

It happened just before I went to print. i started using a cloth to get the board up to temp faster - it reached about 100C and I took the cloth off, then I noticed the temperature precipitously dropping. It wouldn't come back after that.

I emailed support and tested the pad with a multimeter from the terminal and got 0 ohms, so the whole pad is definitely shot (I think). I've been doing a lot of research since then with a lot more luck, and I'm thinking about upgrading and going with the qu-bd silicon pads - specifically the 6", which would fit in the footprint of the original heating pad. Would attaching it to the aluminum bed and insulation with double sided kapton tape be sufficient? I saw your post on making a bed platform that can be scaled for the 8" pad, and I might do that later, but I'm a little scared the platform will deform. If I'm upgrading I'd like to be able to operate the bed at 120C which seems to be recommended for maximum ABS stickiness, but specifically because it's past the glass transition point.

I'm still iffy on power supplies. I think I should just go small for now and buy a 1x12v 15A supply and a solid state relay, which as a bonus doesn't seem to require any soldering. All the future modifications I want to do rely on having a working printer anyways. Does all that sound alright?

Re: Solidoodle 3 heated bed blew

2013-05-18T21:44:36Z

When/how did it happen?

Solidoodle 3 heated bed blew

2013-05-18T18:50:45Z

My heated bed blew at the connector

I'm a huge electrical newbie, so I'm just looking for advice on what to do next. Are there common parts I can use to replace the pad? is there any documentation for replacing the pad? I couldn't find any. The left pin on the board looks pretty bad as well.