# Replacement heat-resistor in the UK/EU? **URL:** \ **Category:** Hardware\ **Created:** [February 6, 2015, 6:35pm UTC](https://forum.lulzbot.com/t/replacement-heat-resistor-in-the-uk-eu/1249 "2015-02-06T18:35:03Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Jonzky](https://avatars.discourse-cdn.com/v4/letter/j/3ab097/32.png) [@Jonzky](https://forum.lulzbot.com/u/Jonzky)\ **Post date:** [February 6, 2015, 6:35pm UTC](https://forum.lulzbot.com/t/replacement-heat-resistor-in-the-uk-eu/1249/1 "2015-02-06T18:35:03Z")
I came back to a print that failed pretty nastily, so I stopped it/cleaned up the plate and thought nothing more of it. Later on I tried to heat up the printer again but after a minute or two the LCD died and wouldn’t turn on. I traced that problem down to a blown F3 resistor on the RAMBo and swapped it out with the F2 (which I believe just used for the motors) while I wait for more to be delivered - now it all powers on fine (with them swapped). I noticed when I was looking at the heating-block that it looks like there’s PLA inside and to make things worse the hot-end/resistor is not heating up now . As far as I can see nowhere in the UK seems to sell the resistor - though tbh I’m not 100% sure what I’m looking. So firstly - is there a chance that a failed print caused the heat-resistor to fail which in turn caused a fuse to blow on the RAMBo? Anyone know anywhere in the UK/EU (ideally in London that’s open tomorrow 😛) that sells the heat-resistors? If not I’m tempted by something like ([http://www.aliexpress.com/item/Heat-Resistor-4-7-Ohm-suit-for-Budaschnozzle-v2-3D-printer-sprinkler-head/1995934327.html](http://www.aliexpress.com/item/Heat-Resistor-4-7-Ohm-suit-for-Budaschnozzle-v2-3D-printer-sprinkler-head/1995934327.html)) - might not be the best quality thing but it seems the most simplest and fastest way to get a replacement. Any help is appreciated. ---
**Author:** ![Orias](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/orias/32/3_2.png) [@Orias](https://forum.lulzbot.com/u/Orias)\ **Post date:** [February 6, 2015, 9:00pm UTC](https://forum.lulzbot.com/t/replacement-heat-resistor-in-the-uk-eu/1249/2 "2015-02-06T21:00:53Z")
While I don’t have any local UK recommendations for replacements like this, we can help. Send a couple of pictures of the hot end with the following information in an email to [Support@LulzBot.com](mailto:Support@LulzBot.com): - Order number - 3D printer serial number - Contact information - Shipping information Additionally- the small fuses are for two things: board logic like you found, and for the stepper motors & hot end heater. More than likely once you replace the blown fuse with the one you’ve ordered it should heat up again. ---
**Author:** ![Jonzky](https://avatars.discourse-cdn.com/v4/letter/j/3ab097/32.png) [@Jonzky](https://forum.lulzbot.com/u/Jonzky)\ **Post date:** [February 6, 2015, 10:42pm UTC](https://forum.lulzbot.com/t/replacement-heat-resistor-in-the-uk-eu/1249/3 "2015-02-06T22:42:10Z")
Thanks for the reply and help. I’ll get an email sent shortly. I had a look at the resistor and it looks burned out sadly ( [http://imgur.com/mRwpDor,9eCQulY#0](http://imgur.com/mRwpDor,9eCQulY#0)[http://imgur.com/mRwpDor,9eCQulY#1](http://imgur.com/mRwpDor,9eCQulY#1) ). Would you say its likely just bad luck on my part or could the bad print/my actions be to blame? ---
**Author:** ![JonathanB](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/jonathanb/32/39_2.png) [@JonathanB](https://forum.lulzbot.com/u/JonathanB)\ **Post date:** [February 7, 2015, 12:39am UTC](https://forum.lulzbot.com/t/replacement-heat-resistor-in-the-uk-eu/1249/4 "2015-02-07T00:39:36Z")
My hotend stopped heating up, how would I know if it’s the resistor or just the fuses? Where are the fuses located? ---
**Author:** ![zero](https://avatars.discourse-cdn.com/v4/letter/z/a88e57/32.png) [@zero](https://forum.lulzbot.com/u/zero)\ **Post date:** [February 7, 2015, 4:56am UTC](https://forum.lulzbot.com/t/replacement-heat-resistor-in-the-uk-eu/1249/5 "2015-02-07T04:56:19Z")
> [@JonathanB](#): > > My hotend stopped heating up, how would I know if it’s the resistor or just the fuses? Where are the fuses located? [![](https://reprap.org/wiki/File:Ramb1-2-fuses.jpg) ](https://reprap.org/wiki/File:Ramb1-2-fuses.jpg) ---
**Author:** ![JonathanB](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/jonathanb/32/39_2.png) [@JonathanB](https://forum.lulzbot.com/u/JonathanB)\ **Post date:** [February 8, 2015, 10:15pm UTC](https://forum.lulzbot.com/t/replacement-heat-resistor-in-the-uk-eu/1249/6 "2015-02-08T22:15:08Z")
Zero, Props, appreciate that. Hmmmm…small enough now isn’t it. I guess there is not way of telling visually if it’s blown without replacing it? ---
**Author:** ![Jonzky](https://avatars.discourse-cdn.com/v4/letter/j/3ab097/32.png) [@Jonzky](https://forum.lulzbot.com/u/Jonzky)\ **Post date:** [February 8, 2015, 10:29pm UTC](https://forum.lulzbot.com/t/replacement-heat-resistor-in-the-uk-eu/1249/7 "2015-02-08T22:29:25Z")
> [@JonathanB](#): > > Zero, > > Props, appreciate that. Hmmmm…small enough now isn’t it. I guess there is not way of telling visually if it’s blown without replacing it? If you have a multimeter you could test it - I found that fuse size was pretty tricky to find and only a few places stocked it in the UK. One thing (though someone please correct me if I’m wrong) - I don’t think is it possible for of these blown fuses to be affecting the hot-end without having other obvious symptoms? What I saw when mine blew was: (F3 was blown) The printer wouldn’t power up/LCD wouldn’t turn on. When I swapped it with F2 (which I believe handles the motors) it would power up fine + the heated-bed working (I didn’t test the motors for obvious reasons). So what I assume is if F3 blows everything seems dead, if F2 blows it shouldn’t affect the hot-end though if it does then the motors shouldn’t be working. ---
**Author:** ![JonathanB](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/jonathanb/32/39_2.png) [@JonathanB](https://forum.lulzbot.com/u/JonathanB)\ **Post date:** [February 8, 2015, 11:10pm UTC](https://forum.lulzbot.com/t/replacement-heat-resistor-in-the-uk-eu/1249/8 "2015-02-08T23:10:02Z")
Well, no need for testing then, because EVERYTHING worked except for the heater not heating up. But anyway, I have another thread going where I explain the issue, pretty much 95% sure it’s the resistor, to back that up, I’m reading nothing across it for ohms also…