I have a ego style pen and batteries that have the lcd hit counter. I recently started using a vivi nova 2ml tank. It came with 3 heating elements, one 2.8 ohm, one 2.4 ohm and one 1.8 ohm. The 2.8 ohm barely produced any vapor unless you held the button for a long time. The 2.4 ohm worked better but still wasn't a good as my old CE4 tanks. I used it this way for several weeks and had no problems. Yesterday I decided to try the 1.8 ohm element. This worked great, a short press of the button produced a nice hit. I got a few hits on it and then it stopped working, when I press the button the led would flash 5 times then stop. I couldn't turn the battery off or on. So I switched to my backup battery and everything was OK again. About a hour later the same thing happened to this battery. I took both batteries apart and found the small boards with the LCD on it had a burned chip on each one. I can't tell what the number was on top of the chip but the number on the board was R4. I could probably fix these if I could figure out the right number for the chip. ' Just wondering whether anyone else has had this problem.
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Dunno if it's the same but ego batteries will turn off if the ohms is too low. Putting them on the charger will reset them. I had a bad head once and it did that. I would think that something that had an lcd would have short circuit protection.
Do you have any way to check the ohms of that one head that caused the problem? It sounds like it was shorting out or a very low resistance like around 1ohm? I've used tons of 1.2-1.8ohm stuff on standard 650mah Ego's and twists and have never had an issue.
I agree, it should have short protection. I know if you hold the button too long that it starts flashing and stops heating, but if you push it again it was OK. But it wasn't a dead short either, I measured it and it was 1.9 - 2 ohms. It was marked 1.8 ohms on the coil.
This problem may not show up on different batteries. The ones that I had, the lcd was in line with the body. The store where I bought them now have ones that are just a tad shorter and have a smaller lcd that is sideways. One thing that I have noticed is that there are a whole bunch of different batteries out there and it's hard to tell what's different. Even on any one web site you can find several with the same specs and vastly different prices, like 1100mAh, from $6 to $16. I guess we gotta put up with all these incompatible and inconsistent issues until this technology matures. I don't know if I can post pictures, I will if allowed. If I could find out what the little chip is, I might be able to fix it.
Grim green had a vivi nova cook the battery in his silver bullet. I won't use a vivi unless it's a very protected mod
Check out his vivi nova review
Check out his vivi nova review
Yeah I tried that, no help. Charging them isn't going to put the smoke back into that little chip. ;-)
They are definitely fried. As soon as I opened them up I could smell burnt components.
R on the board usually signifies a resistor, R4 is the designator on the schematic...if you had a schematic, you could find the resistance, get another surface mount resistor and try to replace that smoked component, surface mounted soldering isn't the easiest thing to do since the components are so small, or you could just replace the entire board
$2.30 EGO-T E-Cigarette Battery 3.6V Circuit Board at FastTech - Worldwide Free Shipping
What kind of battery, eGo regulated, twist?
Pics might help too
$2.30 EGO-T E-Cigarette Battery 3.6V Circuit Board at FastTech - Worldwide Free Shipping
What kind of battery, eGo regulated, twist?
Pics might help too
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Wow, that is really close, but I need the one with the lengthwise LCD screen. I did look around at their site before but didn't even think of looking for the whole board. Good idea! Upon closer inspection I see that it was a transistor Q1. If I had a schematic for it that would help but the whole board would be mucho better. I didn't see any #'s on the board that would ID it so it may be hard to find.
Thanks
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