Name the vfd part?

[m_c]

Regulator would be my first thought, but why would you have a cutaway on the PCB for a low voltage part?
Cut-out is like an anti-flashover feature, which you normally put on high voltage parts, which makes me wonder if it's some kind of switching regulator that takes high voltage and drops it to low voltage.

Any idea what voltage is going to the mystery component?

[charlieuk]

cheers for that I will ask if he can find out the voltage.

[Clive S]

cheers for that I will ask if he can find out the voltage.

Are there no numbers on the part?

[magicniner]

Are there no numbers on the part?

I think if it was carefully removed it might be possible to see the markings with a low power microscope and lighting at the correct angle.

[charlieuk]

the markings seam to be smudged and in unreadable, I don't suppose anyone else has another vfd open that they could see if there's has a clear number on it?

many thanks

[charlieuk]

been diging around more and found this video on youtube I'm not to sure what it all means but looks very similar ???

https://youtu.be/HGpCu9LtfKE?t=20m51s

[Clive S]

been diging around more and found this video on youtube I'm not to sure what it all means but looks very similar ???

https://youtu.be/HGpCu9LtfKE?t=20m51s

yes that is the vid i was looking for

[Doddy]

Which would suggest a 2SK1120 - a N-channel MOSFET designed for DC-DC convertors and motor drives - sounds pretty appropriate

http://pdf.datasheetcatalog.com/data...shiba/2998.pdf

That wirewound resistor nearby looks like it's been pretty hot.