How to run this HV lamps?

Thread Starter

Rufinus

Joined Apr 29, 2020
65
Hello. I have disassemble a large printer. Have a lot of fun things haha!

I find this 2 lamps.



Both of them have anti-creepage slotting of the PCB, so the output has to be over 1.000 volts.





The bigger one is from the scanner. It gives green light (And possibly UV, so I´m being careful). It is supposed to run with 12V DC. Have 3 connections, ground, + and the middle goes with ground to star the inverter. But I apply 12DCV and nothing happens. If I connect an Ammeter there is no current.





About the smaller one, I don´t know anything, except is for retro-illuminate the screen

Any ideas?

Thank you

Kind regards.
 
Last edited:

sghioto

Joined Dec 31, 2017
2,272
and the middle goes with ground to star the inverter.
What does that mean?
That T1A 250 is a ceramic fuse on the the larger board, it might be open explaining the no current.
The smaller board also has a fuse, the green component to the right of connector CN8 (750ma. 125V.F)
 
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