I have a transistor with a pinprick hole ( in red circle on photo "Board") which I need help in identifying. The transistor is 2.8mm x 1.3mm. It's driving an indicator bulb with 28 volts from the rectification section adjacent to where it says "Solder Side". The control side of the transistor comes from pin 4 (I think it's pin 4 - there's no dimple or mark) of the HEF4724BT 8 bit addressable latch marked with a red dot. The actual transistor is in the photo marked Blown Transistor. There's no identifiable marks on the transistor.
So can someone help with identifying the transistor please, so I can get a replacement?
Also, what sort of indicator bulb would it be, running on 28 volts? The old one, which I don't have any more, looked like an LED but it can't be at 28 volts, and there was no visible resistor. Thanks.
As an edit, I would add that the manufacturer has no knowledge or recollection of this board. I don't know how that can happen, but there we are.
So can someone help with identifying the transistor please, so I can get a replacement?
Also, what sort of indicator bulb would it be, running on 28 volts? The old one, which I don't have any more, looked like an LED but it can't be at 28 volts, and there was no visible resistor. Thanks.
As an edit, I would add that the manufacturer has no knowledge or recollection of this board. I don't know how that can happen, but there we are.