I've opened up a 2x39 watt GLO and there is only one ballast in there. IRRC if one bulb goes bad, the other one will also not light (EOL protected), so probably not feasible to switch them individually. I reckon you've probably already opened it by now though and found out for yourself. I have several photos of the innards, but haven't uploaded them yet. If you want pics advise & I'll post what I have.
|