<p>Recently my RAMPS power connector caught fire while heating the heated bed. I suspect this was a defect caused by the connector, and de-soldered/removed it as best I could. I'm  not an electrical engineer, so I'm looking for advice on whether It is possible to re-solder the power connectors directly onto the board, or I'm just risking another fire. Here are pictures of the top and bottom.</p>
<p><img src="https://i.stack.imgur.com/BFnKQ.jpg" alt="Top side of PCB and underside of power screw terminals, showing burning" title="Top side of PCB and underside of power screw terminals, showing burning" /></p>
<p><img src="https://i.stack.imgur.com/oWCMH.jpg" alt="Underside of PCB" title="Underside of PCB" /></p>

[{'answer_id': 13277, 'author': 'AwesomeCronk', 'author_id': 20433, 'author_profile': 'https://3dprinting.stackexchange.com/users/20433', 'pm_score': 3, 'selected': True, 'text': '<p>The blue clips stick in the connector on the extruder end of the feed tube. They are to keep it from opening as the printer extrudes and retracts filament.</p>\n\n<p>To install them, push them in between the white part of the fitting on the feed tube (not the hot end). You should only need one or two, and they are all of varying thicknesses. If you\'re not familiar with these fittings, I found a <a href="https://www.youtube.com/watch?v=6BummHzgf5c" rel="nofollow noreferrer">YouTube video</a> on how to use them.</p>\n\n<p><a href="https://i.stack.imgur.com/JsuQ4.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JsuQ4.jpg" alt="Fitting clips on a Creality Ender-3 feed tube"></a></p>\n'}, {'answer_id': 13279, 'author': '0scar', 'author_id': 5740, 'author_profile': 'https://3dprinting.stackexchange.com/users/5740', 'pm_score': 1, 'selected': False, 'text': '<p>The clips or collet clips as they are called are to secure the Bowden tube more solidly to improve printer extrusion; more specifically: extruder retraction performance.</p>\n\n<p>E3D has explained this very nicely on their site under <a href="https://e3d-online.com/blog/2017/10/27/bowden-tube-physics/" rel="nofollow noreferrer">Bowden tube physics</a>:</p>\n\n<blockquote>\n  <p>For the bowden couplings (which can have some wiggle room in them) we are introducing collet clips, which slide under the toothed collet part of the coupling that physically holds the tube and locks it into place with a little pre-tension to boot. This reduces coupling lash to near zero as the collet and tube it is holding are locked into place.</p>\n</blockquote>\n\n<p><a href="https://i.stack.imgur.com/YobdM.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YobdM.png" alt="Bowden collet clips principle"></a></p>\n\n<p>From the <a href="https://i.imgur.com/RTWnzB5.gif" rel="nofollow noreferrer">animated gif from the E3D website</a> (animated gifs are not allowed on SE) it can be seen that without clips, the tube can move in the tube coupling:\n<a href="https://i.stack.imgur.com/YfzfWm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YfzfWm.png" alt="enter image description here"></a><a href="https://i.stack.imgur.com/2OpuTm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2OpuTm.png" alt="enter image description here"></a></p>\n'}]
['https://3dprinting.stackexchange.com/questions/13282', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/20505/']