Helec Roger F-6
The Helec Roger F-6 is a scientific calculator with 8 digits precision and algebraic logic. It has 20 functions, 39 keys, and a VFD (vacuum fluorescent) display. The power source is 2xAA.
Facts at a glance:
If you have a Helec Roger F-6 that is no longer working, you can first try replacing the 2xAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent.
We suggest the following current model as a replacement: