901 pass through stays on

[MIKEOUK]

ive had this pass through and the atomiser sinse friday,been using it every night.Normaly i press the button,the end lights up red then will flash green after about 6 or 7 seconds, it just lit up red and stayed on, is this a cleaning cycle brought on by the atomiser or has the pass through developed a fault? the button isnt sticking because if i unplug it then plug it back in, it doesnt light up until i press the button again

 

[MIKEOUK]

i seem to have fixed it, i noticed there was excess liquid coming out of the hole at the side of the atty, washed it out, dried it, blew air through it, now its back to normal. Id still like to know what caused it though.

 

[kabomb]

Maybe, excess liquid?

 

[MIKEOUK]

Maybe, excess liquid?

would that cause the pass through to stay on? if so then yesits quite probable that was the cause, its not doing it sinse i washed the atty out

 

[breakfastchef]

My first response would be a faulty switch. E-liquid might have cause a short, but I have not expereinced that personally. Keep us up to date on the happenings with your PT. I still do not trust the switch or the tiny PCB's inside the case.

 

[joedirt]

Not sure if anyone can clarify, but I'm pretty sure the guts of the passthrough are the same electronics as a battery pack, minus the battery.

So there are two paths to "turn on" the passthrough.

One is when you puff / press the button. It turns red as long as the button is pressed until the microcontroller says it's been 6 seconds and then it blinks/ turns off.

The other path in an auto battery is when it senses a voltage, ie. plugged into the charger, it also connects the battery and "turns on" the switch (so you can charge the battery.

The two explanations are that somehow it is sensing voltage and closing the "turn on" switch. This could be from juice putting a resistance some place it shouldn't be. The microcontroller "timer" doesn't really matter here as that should only be on with the switch depressed.

Of course it should be sealed, so this shouldn't be happening (?) so I also have a theory that the guts were designed for 3.7V and not 5V, so I could see situations where the power nfet is somehow thinking it should be "on".

 

[happyvapor]

I had this same problem, thought it was a self cleaning mode too contacted the vender, they said no it does not self clean. I contacted other venders and some claim their PT'S do after 1500 hits. I pluged it back in again, and all seemed fine the atomizer was giving a great hit then the next day i went to the kitchen for a couple of minutes then I smelled this awful burning smell! ran to my desk it was on and smoking left a burn mark on my desk! since then I took breakfastchef's recommendation and ordered a PT from pure smoker I have not received it yet but it appears it will be pretty solid. I would like to know if you had it in your usb when it happened or a usb converter wall plug?

 

[joedirt]

The center contact of the auto battery (passthrough?) is connected to a fet "switch" that allows the current to flow from the battery (/ USB) to the center pin of the atty.

It is controlled by the microcontroller that makes it stop after 6 secs etc.

I believe this nfet "switch" is easily damaged as they don't really have the proper engineering inside these things. If too much current passes through them I believe they can get damaged and act weird, or possibly the microcontroler is failing.

I have not been able to identify the chips involved. I saw three photos so far, and usually the Smart Chip that is said to be a motorola microcontrol is usually blank.

I believe the power fet is SI2301, there is also a five pin power chip which i think is like the LiIon charging chips.

 

[MIKEOUK]

I had this same problem, thought it was a self cleaning mode too contacted the vender, they said no it does not self clean. I contacted other venders and some claim their PT'S do after 1500 hits. I pluged it back in again, and all seemed fine the atomizer was giving a great hit then the next day i went to the kitchen for a couple of minutes then I smelled this awful burning smell! ran to my desk it was on and smoking left a burn mark on my desk! since then I took breakfastchef's recommendation and ordered a PT from pure smoker I have not received it yet but it appears it will be pretty solid. I would like to know if you had it in your usb when it happened or a usb converter wall plug?

it was pluged directly into the usb port on my laptop

 

[MIKEOUK]

The center contact of the auto battery (passthrough?) is connected to a fet "switch" that allows the current to flow from the battery (/ USB) to the center pin of the atty.

It is controlled by the microcontroller that makes it stop after 6 secs etc.

I believe this nfet "switch" is easily damaged as they don't really have the proper engineering inside these things. If too much current passes through them I believe they can get damaged and act weird, or possibly the microcontroler is failing.

I have not been able to identify the chips involved. I saw three photos so far, and usually the Smart Chip that is said to be a motorola microcontrol is usually blank.

I believe the power fet is SI2301, there is also a five pin power chip which i think is like the LiIon charging chips.

i beleve this problem ive had is something to do with the atty rather than the pass through. Im using it now and its fine. It definatly has something to do with build up of excess liquid in the atty, i only drip by the way, never use a pre filled cart.

 

[kcr]

I have the exact same problem, but it doesn't seem to be the atomizer. (I changed atomizers and the same thing happened again.)

Is there a way to fix this?

If not, at least it cleaned the atomizers really well....