Scanner Portable Video Light

It is with a firm hand and a heavy heart I type this last project note.

We have reached an unfortunate impasse. Long story short the FAU despite being for film scanning is not meant to be used at highvoltages and produces little light.

I have a pin out image I will be attaching once I am back at the office. In any case the weak link here was the RED led which is where the problems sprang from.

Using a 5v 2amp power source I powered the light somewhat successfully however in discovering the pinouts and running a multi color test it failed. The Red LED completely. Only works intermittently.

The green and blue ramp up in brightness but then flicker and shut off.

Upon using a resistor I found the brightness too low to be usable at that point despite the blue and green becoming stable at that point.

While the board is still quiteuseful now that the pinouts have been mapped (a nice little cable for other projects) this project is officially closed. I hope it remains here for informative purposes.

That being said some say you can measure the true depths of success with the number of a persons failures. While this project has failed, I have others including 4 scanners just sitting doing nothing. See you all later.

Ok - it works, using the 5v source although ill be entirely honest it seems underpowered.

Positive goes to the V+ on the board and negative to the R G or B pins and we get light.

The issue here will be seeing how much power it actually can take. If anyone has one of these units with an FAU, getting a power reading on the pins would be helpful. Also going to manually test each pin to see which goes to what.. Will post a schematic here once i figure it out.

Also - Note - need alligator clips... very small ones. Anyone has any suggestions send me a link, id greatly appreciate it XD

Well removed it from the housing. Going to take some pictures. I applied 5v from 4 AA batteries to the voltage pin. However nothing happened currently reading up on how others have connected an RGB scanner light up but the pictures are minimal to say the least not sure where to connect the ground. Pictures in a second.

Also nothing helpful or remarkable underneath the board.

Been knocking the idea around long enough. Time to start documenting. Going to go into this with at least a base knowledge of electronics and hacking. (im decent but no superstar here)

Going to need some help with learning ways and resources for testing. Id greatly appreciate input and links. Feel free to send them to me. All documented sources and information will be saved and added to the Apertus Axiom Wiki once I am able to organize it, so this is no dead end here. What I learn I hope everyone can learn.

Looking at the device, ive taken it apart. Its fairly easy to be honest. I will have pictures up in a bit. Simple ribbon to cable, and inputs. Cannot quite get the unit out without desoldering it. The light part is soldered to the board and holds it in place.

Also attempts at discovering the Repair manual for the Canon Canoscan LIDE 500f are fruitless. No board schematics can be found as far as I can tell. Unfortunate. However someone may be able to take a look at the board and decipher it. If so I would greatly appreciate it.