Chosen Solution
I have the above monitor which works sometimes and sometimes not. It seems that if left on for a while, turned off and then on, it will finally light up. It is my intuition that this kind of a monitor has a backlight and that this might be an easily replaceable item. Just hoping you tech gurus out there can assist before I go down a long rabbit hole digging up the details online. BTW - many thanks to those who helped with getting a new power supply into my desktop!! It seems to be working fine, from the contented sounds, but I won’t know until the monitor decides to cooperate!
Hi @daverlea Not sure but if it is essentially the same as a FDP1730 (17" screen) then the screen backlighting is provided by 4 CCFL tubes (cold cathode fluorescent tubes). Being only a 15" screen your model may only have two tubes but then again it may have 4 slightly smaller tubes than the 17" model. I can’t find a service manual for your model to find the part numbers for the tubes or more likely the power board for your model. Here’s a link to the service manual for the 17" model which hopefully may help, although the part numbers will not be applicable I think to your model. On p.6 it shows the 4 connections for the backlights (CN1-4) going from the power board to the screen. Hopefully your board will look a bit the same. Check the underside of the power board for any dry joint solder connections especially if it has a lot a small transformers on it. Check all of their soldered connections using a magnifying glass as these are part of the inverter power circuit that it used to generate the voltages required to operate the CCFL tubes and it is the area that usually fails. Perhaps it may be simpler to replace the power board especially if it uses power transistors for the inverter circuit and not transformers. Look for the board number on the power board and search for that number online to hopefully find suppliers. The board number may start with FSOP26- but this is just guessing on my part.
