Hello,
I received today my A10m. At start-up the temperature of the bed indicates 260 °. I unplugged the bed connector on the motherboard, and always the same. an idea?
I also connect another NTC and identical.
Thank you.
260 ° bed temperature
Re: 260 ° bed temperature
Seems like the hotbed has an open circuit.
Do you have a multimeter? Try to test the continuity of hotbed and the thermistor.
And when hotbed is heating, is the indicator light on the mainboard (D9) light up or not?
Do you have a multimeter? Try to test the continuity of hotbed and the thermistor.
And when hotbed is heating, is the indicator light on the mainboard (D9) light up or not?
Re: 260 ° bed temperature
The display always shows a bed temperature of 257 °.
I tested the NTC on the connector of the bed: the NTC is ok.
I unplugged the connector and tested with a 100K backup NTC. (blue and green wires) in the connector of the motherboard and always displayed at 257 °.
I reloaded the firmware, always the same.
I checked welds and components of the motherboard, I did not see any elements burned or short circuit.
I removed the option from the bed in the firmware to print, but this solution is temporary.
d9 is not lit and no error message.
With 257 °, the bed does not heat up.
I tested the NTC on the connector of the bed: the NTC is ok.
I unplugged the connector and tested with a 100K backup NTC. (blue and green wires) in the connector of the motherboard and always displayed at 257 °.
I reloaded the firmware, always the same.
I checked welds and components of the motherboard, I did not see any elements burned or short circuit.
I removed the option from the bed in the firmware to print, but this solution is temporary.
d9 is not lit and no error message.
With 257 °, the bed does not heat up.
Re: 260 ° bed temperature
Hello.
That we understand each other well.
Gingko suggests that a very high resistance corresponds to such an indication.
Therefore, the question was asked whether you can check if there is no break in the temperature measurement circuit, or not contacts, and not a short circuit.
Can you try a test in this respect
I suggest to check the continuity of connections starting from the soldering pad itself with this signal on the controller board.
And ending with thermistor leads.
That we understand each other well.
Gingko suggests that a very high resistance corresponds to such an indication.
Therefore, the question was asked whether you can check if there is no break in the temperature measurement circuit, or not contacts, and not a short circuit.
Can you try a test in this respect
I suggest to check the continuity of connections starting from the soldering pad itself with this signal on the controller board.
And ending with thermistor leads.
On the forum I help to use the rod, I don't give fish.
Geeetech Prusa I3 M201 Dual extruder Mixcolor 3D printer, bought 2017-12-19, already built, in the cognitive and improvement phase
Geeetech filament, ABS only
Geeetech 3D WiFi Module for 3D Printer, bought 2018-04-15, He got a new life, and still lies in a drawer.
Positively frenzied customer of Getech Technology.
Geeetech Prusa I3 M201 Dual extruder Mixcolor 3D printer, bought 2017-12-19, already built, in the cognitive and improvement phase
Geeetech filament, ABS only
Geeetech 3D WiFi Module for 3D Printer, bought 2018-04-15, He got a new life, and still lies in a drawer.
Positively frenzied customer of Getech Technology.
Re: 260 ° bed temperature
Hello,
The resistance is fully operational. No open circuit.
Resistance varies well depending on the temperature.
From the bed to the welds on the map everything is ok. I have electronics training.
The resistance is fully operational. No open circuit.
Resistance varies well depending on the temperature.
From the bed to the welds on the map everything is ok. I have electronics training.
Re: 260 ° bed temperature
Hello,
I had the same due to an unexpected shortciruit on the noozle temp probe.
Don't believe that you can solve it by your own. I have purchased/replaced the board and it work now.
I had the same due to an unexpected shortciruit on the noozle temp probe.
Don't believe that you can solve it by your own. I have purchased/replaced the board and it work now.
i3 B + i3 C + i3 M201 + A10 + A10m + A30
(+3 x Kossel)
Mostly PLA
(+3 x Kossel)
Mostly PLA
Re: 260 ° bed temperature
You are correct!Agreed
-Keep your mind and try to test it. 
-Everything will be fun！-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!
-Everything will be fun！-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!