<p>A little backstory to help you understand the situation.  I put the 3D printer together and turned it on and everything seemed fine until I started printing.  It didn't even get the first layer down when the screen reset and so did the print.  I didn't think anything of it, I just went back and tried again, but this time right when I pressed start, the fuse blew.  </p>

<p>I have done some research on the issue and haven't had any luck besides recommendations for putting in a secondary fuse before the power supply (which I will be doing in the near future).  As for now though, my plan is to just replace the power supply fuse if possible.  I went to the hardware store and picked up a Bussmann T5AL/250V fuse (photo attached below) and before I put it in, I just want to make sure this is the correct fuse and I'm not going to kill the entire printer this time.  </p>

<p><em>Picture showing the internals of the power supply unit:</em></p>

<p><a href="https://i.stack.imgur.com/fYGTI.jpg" rel="nofollow noreferrer" title="PSU, cover removed showing fuse"><img src="https://i.stack.imgur.com/fYGTI.jpg" alt="PSU, cover removed showing fuse" title="PSU, cover removed showing fuse"></a></p>

<p><em>Picture of the fuse I bought:</em></p>

<p><a href="https://i.stack.imgur.com/QU6dU.jpg" rel="nofollow noreferrer" title="Picture of the fuse I bought"><img src="https://i.stack.imgur.com/QU6dU.jpg" alt="Picture of the fuse I bought" title="Picture of the fuse I bought"></a></p>

<p>Any and all help is very much appreciated because as you might expect, I'm not too happy with the printer so far.</p>

[{'answer_id': 6292, 'author': 'profesor79', 'author_id': 9730, 'author_profile': 'https://3dprinting.stackexchange.com/users/9730', 'pm_score': 2, 'selected': False, 'text': '<p>The fuse rating is same as described on the board - so that shall be no issue with it.</p>\n\n<p><strong>My main concern is why the fuse is down?</strong></p>\n\n<p>Was there a short-circuit? As this is mains fuse - that suggest a big-bang, so, please check carefully hot-end and bed heater connections before restarting the device, to avoid replacing another fuse.</p>\n'}, {'answer_id': 6294, 'author': '0scar', 'author_id': 5740, 'author_profile': 'https://3dprinting.stackexchange.com/users/5740', 'pm_score': 1, 'selected': False, 'text': '<p>To add to the answer of <em>@profesor79</em> (which you <strong>absolutely need to address first</strong> (find the cause why it blew); else the fuse might blow again), you might be interested in installing fuse clamps. As <em>@fred_dot_u</em> mentions:</p>\n\n<blockquote>\n  <p>use caution when soldering leads to the fuse that you do not de-solder\n  the internal fuse from the caps</p>\n</blockquote>\n\n<p>is that if you incorrectly solder the fuse, you might de-solder the caps, soldering the clamps is easier.</p>\n\n<p><em>Example of fuse clamp:</em><br>\n<a href="https://i.stack.imgur.com/HwRFQ.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HwRFQ.jpg" alt="5 mm fuse clamp"></a></p>\n'}]
['https://3dprinting.stackexchange.com/questions/6291', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/11265/']