1 Topic by btm710

  • btm710
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Topic: Replacement Printrboard Rev E (or help ID a part on mine)

So I soldered a few headers in, mainly to get the part cooling fan.  It now appears that it's broken and I don't have any idea why.  It worked perfectly for a while then suddenly the cooling fan decided it was only going to open 7V instead of 12V.  Measuring the voltage across the + fan pin and ground shows 12V but the voltage across what should be the ground fan pin and the actual ground shows 5V.  Shortly after the USB data connection stopped working.  If I short the USBPWR tabs it powers on.  I'm looking to buy another Rev E as the Rev F's appear to be less featured.  Thanks.

2 Reply by heartless

  • heartless
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  • Registered: 2015-04-08
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Re: Replacement Printrboard Rev E (or help ID a part on mine)

Personally, I would not bother with another Printrboard at all, there are better options out there these days.

Rumba is a good 8 bit alternative (available at Makerfarm.com for those in the USA) You can use the same firmware with a simple change of board designation.

or upgrade to a 32 bit board with the Duet... but that means relearning pretty much everything. tongue

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

3 Reply by knowack

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Re: Replacement Printrboard Rev E (or help ID a part on mine)

I too am a Printrboard fan, and have had good luck with mine over the years.  I've added headers for the fan and option ports to mine.

Once, I accidentally shorted out the gcode fan header pins and blew the surface-mount transistor.  I ordered a new Printrboard and got my SD4 back running.  Afterward, I ordered the little transistors and repaired the board, so I have a backup. If you want to fix the fan yourself, I can look around and see if I still have some transistors.  As I recall, I ordered a few extras.

As to the USB, I'd be surprised if any electronics went bad; those ports are usually well buffered, and electronically isolated.  Get a magnifying glass, and check for fractured solder joints in the USB area.

4 Reply by heartless

  • heartless
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Re: Replacement Printrboard Rev E (or help ID a part on mine)

As to the USB, I'd be surprised if any electronics went bad; those ports are usually well buffered, and electronically isolated.  Get a magnifying glass, and check for fractured solder joints in the USB area.

The USB went to crap on my 1st SD4 with the Printrboard - yes, it was the traces on the board itself that were bad... I tried repairing it, and managed to for a very short time, but it did not last.

that was pretty much the entire reason I swapped over to Rumba on mine - for both of them.

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1