What did I do wrong? vv boxmod

[yo vapo]

Out of curiosity, now that it's all hot-glued up and I can't take it back apart...
No matter how I turn the pot, my voltage reads 6.5 volts.

I'll probably try again, but for now I'm liking this. I suspect, however, it'll burn up my cartos pretty quickly. Not to mention juice. I'm getting insane vapor with a Boge 2 ohm in a tank.

 

[Para]

Could be a bad solder connection; but why the hot glue? That chip runs HOT in the air much less being encased. If you replace the board/regulator, skip the hot glue and add a heatsink. JMO

 

[yo vapo]

The hot glue was because the instructions said so.
Thanks, I'll take your advice next time.

 

[Para]

The hot glue was because the instructions said so.
Thanks, I'll take your advice next time.

Wow....with that regulator I'm surprised to hear that.

If you replace entire chipset (pretty cheap to do), leave the wiring long that runs down the length of the chip and board so you have slack between the wires and the top of the regulator. Some 8-10mm square alum tubing from a hobby store makes a decent heatsink. Cut a piece of the alum the size of the regulator, slip it between the wiring and the chip (wires will hold it in place). Some vasoline on the chip and the alum tubing is makeshift thermal contact paste. The heat transfers to the alum and the air moving through the tubing dissipates the heat.

Not real high tech or by the numbers of any manual....but it works, it's cheap, and it's easy.

 

[ruff]

ive found that most problems that dont let you adjust the voltage it comes down to bad connections from the chip to the board, when i put mine together i had a similar problem, and then another member here was having said problem and it ended up being the regulator connection to the board, i'd start there if you want to try to salvage your board

 

[yo vapo]

Para, if I can get the hot glue removed with a heat gun like someone mentioned elsewhere, I'll likely fashion a heatsink from some flat aluminum. Place it between the regulator chip and the silvering on the pc board, and bend it so it wraps around to the other side (backside) of the board. Well, bend it first... you get the idea. Your square tubing sounds like a good heat sink, but are we talking about the same mod box? I don't see enough room in there to do what you say.

Ruff, I think that if all the pins could be soldered onto their pads at the same time there might be fewer problems. That's my thinking anyway. Maybe I just didn't use enough solder. I'm going back in...

 

[ruff]

yeah ive noticed tonight that those pins can be a pita to get connected, i actually have one im working on right now for a buddy of mine and had similar problems with the chip pins not being connected fully

 

[yo vapo]

I went back in and made sure my chip pins were well soldered, still no good. Dang, all that stuff is tiny! Ah well... I still like the mod, just wish I could make it work right.

 

[Dieseler]

Yo if worse comes to worse you can tear yours out and buy the replacement for 7.99 if you choose that route.
Just got mine going and so far it works great , good luck with yours.

 

[yo vapo]

I'll probably do that. I tore the guts out and wired the batts in parallel. Not real happy with that, as the nice warm vape is now gone, even at 2 ohms, except with a brand new carto in the tank and freshly charged batts. Two ohms was great at 3.x volts until I experienced it at higher voltage; now it's *eh* I need more!
Thanks