<p>My Anet A8 suddenly had issues with being unable to heat the bed. After ruling out software issues, I disconnected the connector and found this (sorry for the terrible quality):</p>

<p><a href="https://i.stack.imgur.com/7WYfE.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7WYfE.jpg" alt="Faulty connector: left male, right female, indicator on the burnt pin"></a></p>

<p>The left most pin on the male connector (bed) is also charred. How could I best repair this?</p>

[{'answer_id': 7772, 'author': 'Trish', 'author_id': 8884, 'author_profile': 'https://3dprinting.stackexchange.com/users/8884', 'pm_score': 2, 'selected': False, 'text': "<h1>New Bed (Connection)</h1>\n<p>You will at least need a new female connector, but as the connector burnt, you have some underlying problem that made the connector burn in the first place: either the board is sending bad signals to the bed, or the bed is not rated for the board or you <em>just</em> had a faulty connector (the most usual culprit). Honestly? Replace the whole connector for a properly rated and intact pair - these pin connectors are not rated for 12\xa0V at all but for 5\xa0V!</p>\n<p>If you don't use a beefier connector, solder the wires <em>directly</em> to the bed.</p>\n<h1>Safety first!</h1>\n<p>Anet isn't known for good firmware implementation of safety, so make twice sure that you <strong>run a firmware that has Thermal Runaway Protection enabled!</strong></p>\n"}, {'answer_id': 7773, 'author': '0scar', 'author_id': 5740, 'author_profile': 'https://3dprinting.stackexchange.com/users/5740', 'pm_score': 3, 'selected': True, 'text': '<p>Owning an Anet A8 I confirm that the connectors are not rated for the amount of current that pass through them. <strong>You do not need a new bed unless the heat element has burned through</strong> (but that is pretty uncommon, it usually is the connector). This burning of the bed connectors is a very well known problem of the Anet A8 printers; these connectors are just not rated for the current and the movement of the bed. It is best not to use a connector at all! And yes, the Anet A8 default printer firmware does not have any build in protection for <a href="/q/8466">thermal runaway</a>! It is always advised to immediately flash another firmware, e.g. <a href="https://github.com/MarlinFirmware/Marlin/tree/1.1.x/Marlin" rel="nofollow noreferrer">Marlin firmware</a>. </p>\n\n<p>The best repair is to get some high quality silicone AWG 14/16 wires and solder these directly onto the back of the pins of the connector. Also crimp forks to the other end to connect the wires correctly to the printer board.</p>\n\n<p>What I did was cutting up the connector to leave only the 2 middle pins (for connecting the bed thermistor, which does not use much power) and soldered the red wire to the left 2 pins and the black to the right 2 pins. You can do that at the back side of the socket where the pins make an angle.</p>\n'}]
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