No, it's either RFI or a grounding issue.
If your screen is a 12V model then it will only draw as much power as it needs. It can never get fed "too much power" only too much voltage.
Which Xenarc 7" do you have ?
Most only draw upto 10W@12V but the 706TSA draws upto 25W@12V which is a lot closer to the maximum secondary output of the P2140 being 36W@12V.
Check your output is set to 12V and not 5V and also that there is no AC voltage on it from a faulty component. What does your PSUmoni power supply monitoring application show ? You should make sure all the indicator pointers are in the green zones.
Have you tried powering the screen from the mains adapter ?
VIA Pico ITX, M2-ATX clone, 7" Seform 800x480 LCD Touchscreen, Dual 2x75WRMS Mini Amps, IDE-CF & SATA-CF adapters, 8GB (Sys) & 32GB (MP3s) CF, ELMscan5USB, Slot-load DVD, Craig Brass DAB+/FM USB module, Odyssey Navigator
Build 90% Apps 50% Install 10%
My Xenarc is Model # - 705TSV
which is 9V - 30V i believe
I don't use PSUMoni because it doesn't work in Windows 7. I do however, have the tray app installed now which might work i will check all the outputs if i can.. Otherwise I will hook my p2140 up to XP machine.
Not sure that I still have the adapter that came with the monitor. Does it have a filter on it? That might be my problem as well. Anyways i'll update tn
I use the drivers that come with the tray app. they are Win7 compatable. I even can get Psumoni to run using those drivers
TruckPC - gutted, being used for test setup
BoatPC - Update coming this spring
BlazerPC - PS keeps killing battery