Need help for vp 540 boards .. no power

Are there fuses you can check?

 

from another forum, same machine same problem:

S - "the steady green light on top tells you that the system is getting power. No power to the control panel means - cable came off or the fuse could be blown. Now if you did not remove the cable, then the likihood is the fuse is blown. There are two located up in the front left area. if you have a tester - you can test both sides of the fuse and that should tell you where the problem is."

R - "tested the fuses and there good with power good to and through them."

S - "Ok well I was hoping for the fuse. Looked through the diagram but seen no other obivious issue. So you will need to work part by part. There is a ribbon cable that goes to the control panel from the mainboard. Look the cable over carefully - ensure that the integrity has not been compromised. You may need to use a magnify glass for a pinhole can cause the effect. So you are looking for pinholes, or bent leads or crossed leads. Part of that cable passes over the pump and if ink got on the cable it will erode them. It you use third party inks and there was any misting then you have to check the other ribbon cables also. Before you do any of the above lets recap:

You had main power on - no power to front panel
You have green led lit - no power to front panel
You checked fuses - no power to front panel
if all correct - then top of page
If cable is fine - check power to cable and then work towards the fuse"

R - "Replaced the "Power Board" and still same issue. errrrrr it's gonna get expensive and the jobs are stacking up."

S - "Try Checking the fuses on the main board"

 

You need to test the fuses with a meter. Looking at them is not good enough.