->NOT SO<-- Broken thermistor in the Revo Voron

[Buurman]

Well, I hear a lot off things about defects, on the Revo, but guess its my turn now.

I have a broken thermistor, I saw it a few days peaking my temperature far above what I wanted, yesterday while cooled down, it suddenly fell 10 degrees under room temperature...

Well, since as far as I know the REVO doesnt do cooling, I suspected thermistor is going nuts, but after a restart it report that temperature is UNDER minimum.

So.. broken.. I have a spare, but will search how to get this replaced under warranty, its only a few weeks old.

I hope they made improvements, but this doenst feel very comforting..

[mvdveer]

8 minutes ago, Buurman said:

I hope they made improvements, but this doenst feel very comforting..

The thermistors with the white cables are the early models and a problem. I have had 3 go on me and all replaced under warranty. E3D very good that way. You need to do a few tests to prove it is the thermistor and they'll send you one out straight away. The newer ones have blue wiring and seem to be trouble free - so far

[mvdveer]

This is what you'll be asked to do:

Quote

Thank you for your email. Firstly, I am sorry to learn of the issues you are currently facing with your Revo Voron.
 
So that we can investigate this issue further please can you complete the Phase One Troubleshooting steps found below, if the issue persists once this has been done, please provide the details listed in Phase Two.
 
Phase One Troubleshooting
Before providing the below information, please ensure that the HotEnd is at ambient room temperature.
 

• Please provide the HeaterCore Serial Number, please see the below example for its location.
• Please provide the E3D Works Order and Batch Number located on the side of the packaging the product was sent in, please see the below example for the location of this information. 
• Can you please provide the E3D-Online order number or copy of your purchase receipt/invoice for the product? If the address on the invoice is not current please provide an updated shipping address should a replacement be needed. Make sure there is a telephone number with the shipping address.
• Please check and confirm that the Voltage of the HeaterCore matches the Voltage of your printer. For further details on how to do this please refer to our blog post found here: https://e3d-online.com/blogs/news/12v-vs-24v
• Approximately how many hours of print time was the HeaterCore was used before experiencing the issue?
• Please check and confirm if the wires between the HotEnd and Control Board are stable and do not have any loose connections
• Although a PID is not required in our assembly guide we do require this step to be completed as part of the troubleshooting process. Please complete a PID Tune as the HeaterCore is much smaller than the previous style Heater Block an unstable PID Tune can make this look like an erratic sensor.

Further details on how to complete a PID tune for Marlin can be found here.

Please note that if your printer does not have the option to save to the EEPROM (such as a Prusa Mini) you will need to add this to the start GCODE section of your slicer. Please see the last note at the above link for further details.

If the issue persists, please move onto Phase Two Troubleshooting, and provide the requested details.
 
Phase Two Troubleshooting
Before providing the below information, please ensure that the HotEnd is at ambient room temperature.

 

• Please provide the Ambient Room Temperature
• Please provide the temperature reading from the HotEnd, does this reading change if you wiggle the wire near the HotEnd?
• If you have access to a Multi-Meter, please can you provide the resistance reading from the thermistor with the multi-meter set to 200k. Please note the Thermistor wire is plain white as represented in the below image.
• Does this reading change if you wiggle the wire near the connector? Check the connector crimps as shown below
• Please confirm the firmware type that you are running (e.g. Marlin, RepRap or Klipper) and also confirm the thermistor setting being used.

Please ensure that the above requested information is provided in your reply as this is required to assist with troubleshooting the issue.
 

 

[atrushing]

12 minutes ago, Buurman said:

Well, since as far as I know the REVO doesnt do cooling

Are you sure you aren't using the latest peltier based hotend with the polarity reversed? 

[Buurman]

I was a little fast on judging I see, I had it still defined as Generic...  and it needs to be defined as:

ATC Semitec 104NT-4-R025H42G

Lets see if it keeps running, but it reads out normal now, and this one is, I think with white thermistor, my spare one is blue as mentioned by @mvdveer

[smirk]

7 minutes ago, mvdveer said:

This is what you'll be asked to do:

Dear god! The GOM in me does not like all that, "I'm not an idiot, I know it's broken. Replace it!"...."assist in troubleshooting the issue"....pah! This forum has definitely convinced me against the Revo.

8 minutes ago, Buurman said:

I was a little fast on judging I see, I had it still defined as Generic... 

<Doh> Although, seriously I would be surprised if that was "it", surely it would have malfunctioned (read less than room-temp) from the get-go, unless it's a really new install and only it's first print or two....or your normal ambient temperature fluctuates wildly....or there's been a software update that's changed the resistance table for the Generic definition. Don't trust it. it's lulling you into a false sense of security then it'll catch fire and melt through to the core of the earth.

Again, the GOM in me is muttering that Buying British isn't what it used to be

[Buurman]

4 minutes ago, smirk said:

the GOM in me is muttering that Buying British isn't what it used to be

compared to an very trustworthy Jaguar.. for example.. 

[smirk]

1 minute ago, Buurman said:

trustworthy Jaguar

You mean Tata cars. Or a Rolls Royce....BMW (Henry and Charles are spinning in their graves)....Bentley...VW. Even the Crown Jewels are owned by a consotium from  UAE and Huawei.

[claudermilk]

6 hours ago, mvdveer said:

This is what you'll be asked to do:

This. Knowing all this in advance, you can just throw them the info and move right to replacement. I went through that email the first time (much of it I had already done), and after a couple of back-and-forth emails they sent out a replacement. The second one I included all the info right off and pretty much went straight to replacement (in the second case via the local vendor & they covered cost). The last one is a blue wire unit and no issues so far--knock on wood.

@smirk I wouldn't write off the Revo too quick. Yes, there's been some early production issues--but that's normal for a brand new product. E3D seems to have gotten it ironed out and has been great at supporting the product. IMHO it's a great system and is just going to get better.

[mvdveer]

5 hours ago, claudermilk said:

IMHO it's a great system and is just going to get better.

If only those Obxidian nozzles will be released - looks like earliest will be May/June this year as per e3d site they will only be receiving parts for it the end of February.

[Buurman]

This morning when starting the printer, I get again MCU out of range, so I guess there is still something wrong.

I will check the mail by @mvdveer (Thanks!) and report it. See if I can get a replacement, luckily I have a (blue) spare.

[Buurman]

Will tomorrow receive a new heater, from local reseller (where I bought it) ... I mean... THATS FAST!!

[Buurman]

already replaced it... now my spare and prod is blue wired.. great service from E3D and 123-3d.nl incredibly fast.