Recent content by Arnold9801

The Tridonic ballast is a PC 2X58 T8 PRO si. it replades the defective Thorn GK258. Each one has the wing diagram on it, but to me I am not sure which ones on the Tridonic match the ones on the old Thorn.

I am swapping the ballasts in 4 of my six twin tube fluorescent workshop lights. The problem I have is that now I have replaced them with new ones, only 1 of the 2 bulbs illuminate on each of the 4 lights. I have swapped the bulbs around and the same thing happens, so this rules out the bulbs...