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Blown Einsy Retro on my Mini 2. Is there a better board to replace it with?

Posted: Tue May 21, 2019 10:18 am
by foco4984
So I learned the hard way why not to clean your nozzle with a wire brush..

PSA for those that don't already know: The wire brush can cause the heater wire to short to the heater block sending high amperage intended for the heater to the low-amperage input meant for the probe trigger blowing the board. Use something non-conductive like a Scotch-Brite pad.

Since I am in the market to replace the Einsy Retro, is there a better board I could replace it with that would still work with the Mini 2? I would like to upgrade to a 32bit board. Any suggestions or input is appreciated.

Re: Blown Einsy Retro on my Mini 2. Is there a better board to replace it with?

Posted: Tue May 21, 2019 12:14 pm
by kmanley57
Actually the brush put the 24 volts supplied to the heater cartridge into a 5 volt input on the MPU located on the control board. Which made the input transistor go BOOM!!!!

Re: Blown Einsy Retro on my Mini 2. Is there a better board to replace it with?

Posted: Wed May 22, 2019 10:43 am
by b-morgan
I've protected myself from these potential shorts by adding some high temperature silicone (Permatex Red RTV High Temp Gasket Maker #81160) to the wires as they enter the heater block.

Re: Blown Einsy Retro on my Mini 2. Is there a better board to replace it with?

Posted: Fri Jun 14, 2019 10:53 am
by bbc0
foco4984 wrote:
Tue May 21, 2019 10:18 am
So I learned the hard way why not to clean your nozzle with a wire brush..

PSA for those that don't already know: The wire brush can cause the heater wire to short to the heater block sending high amperage intended for the heater to the low-amperage input meant for the probe trigger blowing the board. Use something non-conductive like a Scotch-Brite pad.

Since I am in the market to replace the Einsy Retro, is there a better board I could replace it with that would still work with the Mini 2? I would like to upgrade to a 32bit board. Any suggestions or input is appreciated.
Was your original question answered? 😏. I wondering what other boards are available and what would be the benefit of changing to one now that we know what caused your damage and how to prevent it haha