Manta RDA with a loose negative post?

If the negative post on your Manta or Manta v2 RDA is loose or wobbly, or if you use it on a DNA40 mod, always with the same coils, and you've detected the resistance is slowly crawl up by (0.01 ohm by 0.01 ohm), here's what's happening:

Sadly, on this RDA, the negative post is a separate piece that's command onto the bottom with a pin. You'd expect a device of this price to possess a polished negative post, but... there you go. The pin is deformed to hold the post in situ and forestall it from turning after you tighten the screw. Unfortunately, the Manta has a history of coming from the manufacturer with a loose pin, or developing a loose pin over time.

To fix it, do the following:

1/ Separate the bell from the base, and remove the screws from each posts

2/ Drill a 7 millimetre hole into a little flat little bit of plyboard and slip the base's 510 connexion into the opening. This is so you'll apply force equally to the whole surface at rock bottom of the bottom while not scratching it, and without damaging the projected 510 connexion.

3/ Lay a flat piece of hard plastic across the high of the negative post, as perpendicular to the post as possible in each directions (or in alternative word, making positive the piece of plastic rests equally all round the high of the post) and gently hammer the post down with a light-weight hammer. The idea is to confirm the post is pushed all the means down and rests at rock bottom of its housing within the base, and that both posts square measure at a similar height, without deforming the threads for the post's screw.

4/ Insert a 2 millimetre wood nail into the negative post, make positive the nail's pointy finish falls into the present indent on high of the pin, at the bottom of the post's hole - that the manufacturer made after they themselves ill-shapen the pin to secure the post - and confirm the nail comes out of the post targeted. Then give the nail's head a sensible whack with a heavier hammer, nice and centered. One whack, that's all. Don't hit the nail therefore exhausting that it would bend and jam into the post (or worse, bend the post with it).

5/ Check that the negative post doesn't wobble any longer. If it's still loose, redo 4/ with a new nail. You shouldn't want over a pair of or three whacks to secure the post once and for all.

6/ Remount the post screws. If you did the work right, the negative post's screw should interact the threads while not any effort.

7/ If you use a DNA40 board, mount your favorite coil the way you sometimes do Associate in Nursingd check the resistance: it ought to have born by many hundredth of an ohm.