A10 Temperatures are reading very high

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emaren
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Joined: Sat Aug 18, 2018 7:35 pm

A10 Temperatures are reading very high

Post by emaren » Wed Nov 28, 2018 6:30 pm

My A10 has been pretty good for the last couple of months, but mid-print last night the temperature sensors are reading wildly incorrectly and the ensuing chaos was pretty funny.

However I cannot see a reason for this.

The measured room Temp is 21C.
- The IR Measured Nozzle Temp is 20.7C
- The IR Measured Bed Temp is 20.9C

Reported values from he machines are
- Nozzle 90C
- Bed 79C

The nozzle is reading +58C and the Bed + 69C

How do I even begin to troubleshoot this ?

I have tools, volt meter, enthusiasm, but I do not know where to start ?

Help ?

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William
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Joined: Tue Jun 07, 2016 9:38 am

Re: A10 Temperatures are reading very high

Post by William » Fri Nov 30, 2018 11:28 am

Do you have a multimeter?
1.Check the thermistor
100K ,ntc(80~120K is normal)
2.Remove the thermistor off then check the LCD info correct or not
-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!

patm300e
Posts: 14
Joined: Mon Aug 27, 2018 8:06 pm

Re: A10 Temperatures are reading very high

Post by patm300e » Sat Dec 01, 2018 1:30 am

I found mine doing this in the middle of a print resulting in a MAX TEMP displaying on the screen and the print failing. The only way I could clear the max temp was to turn the printer off and back on (Shades of the IT Crowd).

Anyway I found my printer has a loose connection such that when I move the black molex connecter in the back, it fixes the problem. Maybe you have this issue as well?

emaren
Posts: 9
Joined: Sat Aug 18, 2018 7:35 pm

Re: A10 Temperatures are reading very high

Post by emaren » Tue Dec 04, 2018 5:32 pm

Unfortunately all connections are solid - at least all of the non-soldered ones are solid.

It is very frustrating that I cannot find a decent trouble-shooting guide..

What I am thinking of doing it buying a new GT2560 board, because it appears that the issue is there, from the limited information that I can find.

Unfortunately there are no A10 specific board available, so I am contemplating getting a very generic board and new LCD and building a hybrid out of the wreckage of my A10. If anyone has ever done, this, a few pointers would be good....

emaren
Posts: 9
Joined: Sat Aug 18, 2018 7:35 pm

Re: A10 Temperatures are reading very high

Post by emaren » Tue Dec 04, 2018 5:44 pm

William wrote:
Fri Nov 30, 2018 11:28 am
Do you have a multimeter?
1.Check the thermistor
100K ,ntc(80~120K is normal)
2.Remove the thermistor off then check the LCD info correct or not
Yes I do have one - do you have some potted instructions on what / how to check please ?

emaren
Posts: 9
Joined: Sat Aug 18, 2018 7:35 pm

Re: A10 Temperatures are reading very high

Post by emaren » Tue Dec 04, 2018 6:08 pm

More information.

unplugging everything except power/motors from the board gives me the same temp readings, a quick check of resistance on the thermistors gives me readings in the 100k region - which leads me to think that the board is fried, not the bed/hot end.

Does this feel likely ?

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William
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Joined: Tue Jun 07, 2016 9:38 am

Re: A10 Temperatures are reading very high

Post by William » Tue Dec 04, 2018 8:36 pm

:?
I think the issue from the board.
The last step is:
Replace the thermistor .
-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!

emaren
Posts: 9
Joined: Sat Aug 18, 2018 7:35 pm

Re: A10 Temperatures are reading very high

Post by emaren » Wed Dec 05, 2018 1:29 am

William wrote:
Tue Dec 04, 2018 8:36 pm
:?
I think the issue from the board.
The last step is:
Replace the thermistor .
I think that you are correct - so I have decided to build a hybrid.

I have an older GT2560 board - not one designed for the A10 and a 2004 LCD on their way - in theory, with a few cabling changes and some new LCD / control board enclosures - hopefully 3D printed - I will have enough to build up a hybrid device........

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