26-11-2011, 05:59 PM
I have a CB24 board with photocells. They are set to operate on close only and have been working fine for a couple of years. Now, instead of a consistent red light on the cells, there is an intermittent flash - time between flashes can be between 2 seconds and 40 seconds. Occasionally they will stay on long enough for the timer to run out and will then go off.
This of course means i cannot close the gates. Even removing the photocells from the circuit and shorting the connectors won't allow me to close (can the learning process of the photocells be 'unlearnt'?)
I have checked the batteries (12.5v and 12.7v respectively) and cleaned out the inside of the cells (and evicted spider!) with no luck.
The only oddity i can see is perhaps (and this might be my imagination) that one light is brighter than the other - and the duller one is at the end of the longest cable run.But as i said it has been fine for 2 years - and has worked ok twice today.
Any advice would be appreciated
This of course means i cannot close the gates. Even removing the photocells from the circuit and shorting the connectors won't allow me to close (can the learning process of the photocells be 'unlearnt'?)
I have checked the batteries (12.5v and 12.7v respectively) and cleaned out the inside of the cells (and evicted spider!) with no luck.
The only oddity i can see is perhaps (and this might be my imagination) that one light is brighter than the other - and the duller one is at the end of the longest cable run.But as i said it has been fine for 2 years - and has worked ok twice today.
Any advice would be appreciated
