In my experience that's the warning sign to start shopping - how long has it been working like that? Some of mine (the Esab for sure) soldiered on for some months when left face up on the windowsill when not in use but eventually even that wasn't enough.I thought mine was knackered but left it in the sun for a few days and it is fine.
I always keep it in the light now.
In my experience that's the warning sign to start shopping - how long has it been working like that? Some of mine (the Esab for sure) soldiered on for some months when left face up on the windowsill when not in use but eventually even that wasn't enough.