IR3245 operation panel

[skibum]

My customer called with a smell from op panel and it was flickering. I inspected it a found no sign of physical burnt areas. The smell seams to come from a small transformer on the inverter pcb assembly (FM3-5744-000). I solder a few cold solder joints and reassembled to power it up again. The machine is normal except for the display is not fully back lit. The display looks darker on one side but is overall not as lit and is dark than normal. The back light adjustment knob on the panel makes very little difference when adjusted.

It looks like this inverter is some sort of low voltage power supply to power the display. The smelliest section on the board is where there is a small transformer.

Has anyone had the inverter PCB fail?

[teckat]

Re: IR3245 operation panel

Inverter is issue. :-|

The new style LCD Inverter PCB (Part Number FM4-6690-010) now has a jumper, JP4, on it. Also, there may be one of two different style LCD's in the machine, each with a different style connector to the Inverter PCB. There are two positions for jumper JP4 depending on which LCD you have.

If the LCD Display's connector plugs into J2 on the LCD Inverter PCB, the jumper for JP4 should be positioned all the way to the left for the LCD Display to work properly.
:-))
If the LCD Display's connector plugs into J3 on the LCD Inverter PCB, the jumper for JP4 should be positioned all the way to the right for the LCD Display to work properly.

[spectraindo]

Re: IR3245 operation panel

That's right, the inverter PCB is a problem with this Canon model.
Replace the inverter PCB.

[Brian8506]

Re: IR3245 operation panel

I've also had the problem and had to replace inverter pcb