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Re: Printer still is not working
Posted: Thu Nov 03, 2016 4:56 pm
by Haralds
Hi!
ok!
I agree non heating the hot bed is not a board problem. It works.
I connected the hot end and hotend termistor in place of hot bed and it works.
I connect the hot bed and left connected the hot end's termistor and hot bed start heat.
What You can advise for this case?
Haralds
Re: Printer still is not working
Posted: Fri Nov 04, 2016 12:30 pm
by William
Haralds wrote:Hi!
ok!
I agree non heating the hot bed is not a board problem. It works.
I connected the hot end and hotend termistor in place of hot bed and it works.
I connect the hot bed and left connected the hot end's termistor and hot bed start heat.
What You can advise for this case?
Haralds
So did you check the thermistor underneath the heat bed?See my picture:
- QQ截图20161104122831.png (372 KiB) Viewed 8740 times
Re: Printer still is not working
Posted: Fri Nov 04, 2016 12:36 pm
by Haralds
Yes! I check it. Both wires are alive.
Haralds
Re: Printer still is not working
Posted: Fri Nov 04, 2016 1:59 pm
by William
Haralds wrote:Yes! I check it. Both wires are alive.
Haralds
Could you take a picture of it like mine?
At the same ,you can measure the resistance of your bed thermistor,whose value should be about 100K ohm.
Re: Printer still is not working
Posted: Fri Nov 04, 2016 2:41 pm
by Haralds
Hi there is pictures.
Resistance measurement shows there is no connection.
With original wires, attached too and measured directly too.
Haralds
Re: Printer still is not working
Posted: Fri Nov 04, 2016 3:09 pm
by William
Hi,Haralds
Sorry i didn't find the thermistor in your picture.Was it missing?
Tear out the tape on the bed so you can measure the resistance from the 2 pins of the thermistor directly.
You know what,i'm suspecting the thermistor is a bad one or it wasn't solder well...
See my picture:
- QQ截图20161104150224.png (926.81 KiB) Viewed 8737 times
Re: Printer still is not working
Posted: Fri Nov 04, 2016 3:26 pm
by Haralds
Hi!
There are measurements
Re: Printer still is not working
Posted: Fri Nov 04, 2016 3:47 pm
by William
So you don't have this stuff(thermistor) on the surface of your bed?Or you unplugged it ?
- QQ截图20161104154440.png (481.65 KiB) Viewed 8735 times
- QQ截图20161104154630.png (182.19 KiB) Viewed 8735 times
Re: Printer still is not working
Posted: Fri Nov 04, 2016 3:58 pm
by Haralds
I do nothing with it.
It is as was at delivery time.
I thought that it is integrated in the bed inside...
If it should be on surface then it never was there.
So what is Your sudgestion? What I should say to seller?
Haralds
Re: Printer still is not working
Posted: Fri Nov 04, 2016 4:20 pm
by William
Yes,Haralds
You should tell your seller about it and let her resend a bed thermistor with previous broken stuffs together.
You can solder it on the two solder joints underneath the bed when it arrives.
Finally we find the problem,the thermistor is used to detect the bed temp,but it was missing and that's why you get "0/0" for bed on LCD.