Moosemilk wrote:
I tried every frequency.
I presume you mean you tried every frequency by dialing in each of the various frequencies into the CC and E640 (i.e. you did not change one without the other).
In this case, I would recommend having both lights set up. This will make pinpointing the problem easier. Set them up on CH1 and CH2, and all devices on the same frequency of your choosing. Repeat the OPEN MEMORY>OPEN FROM STUDIO steps again to verify that it still is not working (if it is an environmental factor that changes, we need to verify the problem still exists during the test).
Assuming neither E640 shows up, enter SETUP>SPEC LIGHTS. Select Ch1, then select ALIEN BEES, AB1600, 250W. You will then return to the "Define light units" screen. Select CH2 and repeat the same process. Then exit the Set up menus and return to the FLASH screen.
Here, select each channel and try to adjust the flash output up or down, trigger them, etc.
If one Einstein pops up during the OPEN FFROM STUDIO phase, then the CC is probably ok, but there may be an issue with the CSXCV or flash head (this can be verified by swapping recievers with the heads).
If neither Einstein appears on the CC, but the lights do adjust and fire from the CC when programmed as B1600's, then there is a problem with the CC's reception. However, in a pinch this will offer most functionality other than the bottom few power settings.
If the lights do not fire when programmed as B1600's there is likely a transmission problem in the CC.