Nick is correct. I have 3 of these. A rubber band should do the trick. The hard part is when you are reassembling the OLED display and the board. Remember to follow the instructions that show a tab that opens and then the ribbon slides in. Once the ribbon is in place then push the tab down to hold the ribbon in place. I found that it was easier to attach the OLED ribbon while the board is out vs installing and attaching the OLED to the Hana then trying to connect it to the board. You will need a hot soldering tip and lead free flux just for attaching the negative to the 510. I was successfully with attaching my friends new OLED screen after he broke it with taking the 3 screws out, placing a plastic pen to prop the board up on an angle then using tweezers to attach the ribbon. I had to buy a little LED microscope which assisted with it. It did not go to waste because I use it for my builds now. But that was a pain and wasted 2 hours of my time. I found that it was easier when I assembled 2 of my Hana V200's. There is a vape store that sells the Hana complete boxes with the lipo in Lombard, IL for $80 and then all you need to do is buy the DNA 200 chip which comes with a OLED screen. This is an exclusive Hana retailer where these units are authentic but are not assembled. For their Juice Bar, they probably have over 80 Hana DNA 40's to sample juice. I never have seen so many Hana's at one place.
