Buzz pro skipping voltages

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sadtranz

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Received my Buzz yesterday from L/F uk, i have same problem any thing over the yellow is a very small adjustment to 5v, very pleased with unit apart from the very small button and not to bothered about the over 4.4v problem
saving me a fortune at the mo can use my dual coils wich for some reason the last 20 i purchased although they read 1.5ohm do not perform as they used to but at about 4.6v are fine
 

arkador

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just checked my buzz after frying a carto.
with the right edge of the yellow mark in the middle I am at 4.03v.
with the left edge of the yellow mark in the middle, I am at 4.59v.
a tiny turn past yellow (about 10% between yellow and red) I am at 5.02v

my previous PCB wouldn't hit 5v till more than half way between yellow and red, and was a pretty smooth voltage change throughought the spinning of the dial, this new PCB jumps REALY fast, around the yellow mark.
 
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arkador

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at this point, I'd buy and have a new PCB installed if it were to give me the linear voltage adjustment back that my previous one had. I consider my warrany null and void after the incident of falling into NASTY water yesterday. I assume the water had nothing to do with this though, since others are making the same comments.

the linear voltage adjustment is one of the key factors in the PRO list of the Buzz vs other non pushbutton VV mods.
 

bobthesalesclerk

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I just ordered my bp yesterday. I hope this issue doesn't show up on mine. Any one know if Mike has solved this problem?

Mike is aware of the problem. He said the wrong pots may have been sent to him. We are still waiting to hear back from him.

I have tested mine under load and my wheel works fine between low and yellow and between red and high. I get .4 volt changes with slight turns between yellow and red though. Yellow is 4.24volts under load but if i turn it ever so slightly it jumps to 4.8 volts.

4.3/4.4/4.5/4.6/4.7 kind of get lost somewhere.

sent from my Ice Cream Sandwiched Gtablet
 

BuzzKill

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I tested one that had reported this problem but it tested FINE for us , between yellow and red it should go from approx/ 4.5 volts to about 5 volts , we only mark the 4.5 volt yellow mark then just eyeball the red because they are normally consistent , is it 100 % linear = NO should they SKIP No , can it be more sensitive in that area =- Yes, the controller input has a curve to it , we tried to match this curve as best we could with our pot MFG , do we get some bad ones yes ,. from time to time.
 

mwa102464

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Am I wrong or from what I have read about Pot's the more you keep moving them back and forth the more they get out of tune a bit and also they will go sooner or later ? I always thought it was best to set it and forget it and only move them when you change up Atty's/cartos to another ohm rating ? I could be wrong I'm not sure but I thought the less you keep adjusting a potentiometer the better and longer they last ? Some input is welcome I would like to know myself ?
 

BuzzKill

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Am I wrong or from what I have read about Pot's the more you keep moving them back and forth the more they get out of tune a bit and also they will go sooner or later ? I always thought it was best to set it and forget it and only move them when you change up Atty's/cartos to another ohm rating ? I could be wrong I'm not sure but I thought the less you keep adjusting a potentiometer the better and longer they last ? Some input is welcome I would like to know myself ?

Any POT has a life to it , the more you move it the more is wears , they are mechanical so this comes with the territory , these are rated for 500 full turns before they show wear , at least for me I have not had one go bad, we have had a few fail but this was total failure or broken wheels on them.
 

mwa102464

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Any POT has a life to it , the more you move it the more is wears , they are mechanical so this comes with the territory , these are rated for 500 full turns before they show wear , at least for me I have not had one go bad, we have had a few fail but this was total failure or broken wheels on them.

OK ya Buzz so the more you turn them the more that waffer in the middle wears correct, or that black piece on the waffer board wears, either one. So you are saying the less you really play with the thing and move it the better right ? like set it and forget it unless you have to move it dont ? 500 turns seems like a lot but in reality it isnt it seems, either way I set it and forget it unless I have to move it I dont. Seems like a lot of people like to play with spinning that wheel, its a no no unless you have to.
 

arkador

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no need to turn my dial, If I move it even a hair it goes up by .3volts, so definately dial it in, and do NOT touch it.

edit:
rolled by pot from green to red and back about a dozen times. havn't hooked it upto a meter, but it tastes like it is flowing a bit smoother. Mabye I'll hook it up to a meter again next time I change a carto.
 
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5cardstud

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The only way he could of got around that is have a 25 turn, more or less, pot but then you would be turning and turning the pot forever to change settings. I tried mine with a meter and without a meter and the taste, throat hit, and vapor was the same whether I knew what the exact voltage was and when I didn't know what it was.

MWA aren't you worried about not having a PV to use? LOL Dazaam, that's an impressive collection you have there. Is that an VVPV I se amonst them?
 
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arkador

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A single pot like this can get stuff in it , turning it once in a while will not hurt it and may clean it up some in case if got anything on it , I have not had one fail this way yet in `10 + months or so .

Mine did fall into hot water full of oxiclean, and all the gunk that was cleaned out of my smoker....

Sent from my Xoom using Tapatalk
 

tsbman

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Ok. Heres the deal on pots from my POV as a guitar player and amplifier builder. These are electro-mechanical devices. They have three parts; a body which houses the other two components and can also serve as a ground, a shaft with disk with a conductive strip imprinted or plated on it that rotates and a signal or current carrying contact. They have three terminals that can be wired in various ways depending on you needs.

There are two types of pots linear logoramithic. Linear is just that linear, a straight line in voltage rise and probably what is in the the bp and ip. logoramithic pots have a steeper taper and are used on audio applications.

A pot needs to be moved to keep it healthy. It helpls keeps the contact surface clean and keeps it from seizing up. Pots can get dirty, even if they are sealed. Dirty pots cause voltage fluctuations, Try listening to an old radio or jamming thru an old amp, the scratchyness in the speakers is dirt in your pots. Contact cleaner squirted into your pots and moving, exercising the pots will clean the junk off. Outside of that, you may have a bad pot. Poor plating or what ever.

I hope this is the solution for all. Radio shack. Contact cleaner. safe for all electronics. squirt away. Wipe off excess. Don't squirt it anywhere your vaping material comes in contact though. doubt it will will kill you, but might tast nasty.

HTH
 
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