That's input D blinking right? According to the service manual:
INPUT D blinking at 0.5-second intervals
X-RAY
X-rays detected
• SIGNAL PWB ASS'Y IC801
• HV CONTROL MODULE PWB ASS'Y IC503
Those two boards/ICs would have the malfunctioning circuit. I've heard about ICs going bad on these monitors before, though they should be replaceable. I wonder if running the self-diagnosis test in the service menu might help.
Looks like you have a nice unit with low hours and the anti-glare film intact, hopefully you can fix it! BTW I'm curious about people's care approach for keeping the screen clean. I only let a soft and dry t-shirt touch mine. Seems like even a bit of water followed by rubbing can strip the paint off the film on some of these.
famiac wrote:has anybody had purity issues with the DT-V's? one of mine has a blue spot in the bottom right corner.
I've seen it in a couple of other people's units, and IIRC one had it on the bottom right too. I'd try changing the direction the tube faces to see if that makes a difference. Sometimes adjusting rotation, either the digital setting or the pot inside the monitor, can help with purity issues. Too bad these don't have the nice purity digital adjustments that some of the later BVMs had. Last resort would be playing with the purity rings I suppose.