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Topic: Please help, MK2B heat bed mod

Hey guys,

Recently my glass bed broke on my da vinci 1.0 forcing me to buy a whole new one,

After cutting the black wires from the old heated bed I resoldered them to the new one.
The problem is that now only the 'front' half (above the letters printed on the board) is heating up. (the from to about 80 degrees C and the 'bottom' to 30)

And help would be great
Thanks again
Andrew

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Re: Please help, MK2B heat bed mod

Is that a 12v - 24v heat bed? May need to double check the wiring if it is.

Did you put the BLUE wires on the rear screws?

I haven't ordered a new heat bed yet but I was thinking of going with the MK2 or MK3.

Did you get it sorted yet?

Bob

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Re: Please help, MK2B heat bed mod

I sorted out the heat bed, it needed to use all 3 'pads' (needed to solder 2 and 3 together)
But just then a stray wire (on of the blue ones) hit something a I think ive shorted something out!
The screen isn't showing up anything properly.
I hope my printer isnt dead for good now sad

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Re: Please help, MK2B heat bed mod

I thought it may have been something like that.

I think the blue wires are something to do with the way it finds when it is level with the three point check.

I don't know if there is voltage at the wires, I'll check tomorrow if you want?

Is there anything happening if you disconnect the blue wires?

Bob

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Re: Please help, MK2B heat bed mod

Voltages

Blue Wires both have 3.32 volts.

Black wires have 11.92 volts when the bed is being heated.

Bob

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Re: Please help, MK2B heat bed mod

Yeah I think the blue wires are for bed leveling as the printer couldnt calibrate (some error) when they wern't in the right place
I'm not sure how to tell if i've blown a fuse or something, do you know?

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Re: Please help, MK2B heat bed mod

No I don't sad

There is nothing on the board that is obvious either.

If anyone is reading this message and knows the secret, please drop in and tell us smile

I ordered a MK3 heatbed today, probably be here in another month!

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Bob

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Re: Please help, MK2B heat bed mod

Cool, good luck.
One mistake I made on the MK2b was to (when connecting for 12V) connect wires to 1 and 2, I didnt realise that I also needed to solder 2 and 3 together as well (1-, 2+ and 3+ too)

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Re: Please help, MK2B heat bed mod

I don't know if I'm crazy but I ordered another da Vinci 1.0 from kogan (Ebay had a 100$ off sale) so fingers crossed I don't break this one too

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Re: Please help, MK2B heat bed mod

You're a glutton for punishment smile

My next printer is a Rostock Max V2, delta and it is about 90% finished... Just waiting on a special crimping tool...

The MK3 is pre-wired and has the thermistor fitted as well so it should be okay

Bob

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Re: Please help, MK2B heat bed mod

whoa thats cool the it has the thermistor in it already, was it expensive
Just received my 2nd printer, trying to figure out how the calibration works lol slowly figuring it out

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Re: Please help, MK2B heat bed mod

Well at least you have one that works now smile

I put the DaVinci on Repetier today, can't print because of the heatbed so I am waiting for bits for both printers now.

http://www.aliexpress.com/item/Free-shi … 86334.html

I think it worked out about 32.00 which is more than reasonable, probably take ages to arrive but that's okay.... I'm patient!

Bob

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Re: Please help, MK2B heat bed mod

So i've gotten 15 hours or so of printing done on the new machine,
I just got error 0010, 'something about overheating'
I'm trying to play it super safe this time around, do you know anything that could cause or fix it?

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Re: Please help, MK2B heat bed mod

I think that one is just turn the printer off and back on again. I am pretty sure I saw a couple of those.

Seems like it is going pretty well so far 15 hours, mine got to 450 then the heat bed died.

Bob

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Re: Please help, MK2B heat bed mod

Check this out for fuses, they are not conventional but there is a chance that the one for 3.3 volt is blown!

http://voltivo.com/forum/davinci-hwmods … ot-working

Bob