Hi Chaps!
My Chester 7 x 12 has very occasionally
flashed, from the motor area..... But, kept on running.

Fitted new brushes..... No difference!
Yesterday, waiting for instructions. Speed control off. Direction switch, forward. It took off at top revs, in reverse!

Stopped it, using the direction switch. Tried it again. It produced a beautiful flash from the motor area, and died......

Today, I've stripped and cleaned out the motor. Replaced the blown plug fuse. No joy.......

Working in from the plug, is this plastic box. It is inside the motor enclosure......

Guess this is the culprit......

It is mounted on this face, protected only by a sheet of mica (or similar).
Power reaches the l/h connetor block. But not the r/h one. (There's power in the middle, I inadvertently touched the pcb)!

Guess it's a transformer?

Anyone any ideas or guidance? Where do I get another?
Thanks in advance.......

David D