I have two of these  Dell 1703FPs that are doing the same thing, when you power them on they flash amber and nothing show's on the screen.  I am assuming that it's inadequacy power being provided too the monitor from the psu board which, I can easily get a replacement.  Looks like these displays are about 12 or 13 years old. I wouldnt invest anything into fixing them myself. New flat screens with better performance can be picked up pretty cheap. Additionally you can pick up GOOD used flat screens from $10 to $40 depending on the display.
It could be bad capacitors on the power supply that are technically replaceable but as Dave SAYS it's probably not worth it.  Especially since a better, used, monitor would likely cost less than the power supply board.kind of figured that is what it could be and can REPLACE it easilyIf it's anything beyond a simple capacitor swap, it's not worth doing IMO.  Don't spend any more than $10 on each, otherwise you could have SIMPLY bought a new monitor for the same price.I found a used working one cause, it seems too be alot of hassle too try and fix the unit.So I got two of these unit's one for 2.50 and another with $35 but, still have another sound bar and monitor stand