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dc99

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Posts posted by dc99

  2. "Throttling"

    in General Discussion

    Posted

    28 minutes ago, Si98justme said:

    In my experience, it’s not always the connection, but it is a great majority of the time, on all 3 of my DNA 250c devices. When they start acting up and throttling, I unscrew an tighten the atty a few times and it fixes it for a few days, until something (even tarnish on the brass that most 510 pins are made of) gets in there. Even some spilled or excess juice that has wicked between the mod and the base of the atty can cause it to give me grief.
     

    Moral of the story, it’s exceptionally likely that there is something going on in the connection between the board, through the wires, through the connector, through the atty and finally to the coil/s. At any one of those points there could be a connection that is less than ideal, the DNA 250c is particularly fussy when it comes to resistance changes (arguably a good thing) and demands the strictest consistency.

    My advice would be to check your solder joints to and on the 510 or the mechanical connections (if you built the mod yourself, it sounds like you did). Another thing to do is make sure the center pin is completely clean and is bright shiny metal, and that the atty makes sufficient contact with the pin and base of the 510.


    On my Triade 250c, the ground nut wasn’t completely making contact with the 510 even though it was tight, I had to come up with a fairly creative solution to get it to make a solid connection. One way to work out where the loss in connection is, is to use a multimeter and measure for voltage from each output on the board to the post of the coil on the same polarity, for both polarities. Ie: measure the voltage drop over the entire wire from board to that leg of the coil. If there is any significant reading near or above a few millivolts, then there is some issue with the connection.

    If all that checks out, then you probably have a rare dodgy board. Anyway hope that you understand my tips and that helps you and others get to the bottom of similar issues.

    Well I backed up to SP35 and it works fine

  3. "Throttling"

    in General Discussion

    Posted

    7 hours ago, steamer861 said:

    Every time this happens to Me it's a resistance issue. Some were between the board & the coil there is some kind of fault causing an improper resistance read by the board.

    Agree with all your points  :)  I to us Ti in TC & keeping the resistance reading perfectly can some times be a challenge. A gunky coil a loose retaining screw even a dirty 510 can all cause resistance issues, causing a weak hit (Throttling or Hitting Temp Control)

    Pretty sure I know you. Im also pretty sure this board came from the first bunch. Even though its new. Im starting to wonder if it was an issue with a batch of the older boards.
    I swapped the 510 (both source 510's). Ive tried numerous RTA's and RDA's with different coils. Guess I will bite the bullet and replace the board and just keep this one for wattage mode

  15. LIPO 4S Battery Cell 4 Not Fully Charging

    in Batteries and Charging

    Posted

    18 minutes ago, Jackal said:

    It seems that the lowest cell of the pack determines the percentage charge shown, so if one cell is low, the percentage will be low, and you may have to charge that cell separately to balance the pack . A bad connection on the board could cause a cell to not charge and discharge properly,  and this may be the problem with my mod.


    Cheers!

    Jackal

    I really dont want to take this battery out but if I have to so be it. I left it on charge to see if it would balance itself. Its a brand new battery so it was shipped a little off. Batt 2-3 will get to 4.2 and keep backing to 4.198-4.199 and battery 1 is at 3.946. It did go up to 71% from 70

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