Transformer - is it the end?
HI folks, appreciate your help again.
I have a substantial transformer I would like to use for a power supply for use with military sets (in this case an R1155, but potentially others). I picked it out from my accumulation because it supplies more than the standard 5 valve set psu transformer - 200mA HT and 5A at 6.3v. Windings show continuity as expected and output measures about right. But the thing shows signs of distress - a soft hum with mains applied, a little crackling, a whiff of smoke, and heating up, warm to the touch. I only had mains on it for a few seconds. It doesn't seem to show signs of past overheating. It's been stored a few months after arriving from a Harpenden lot, in a shed which is reasonably dry.
Is it beyond hope? Is it likely just damp? Stick it in the oven?
Thanks,
Tony
|