Having problems with your Samsung SyncMaster 204B 20.1" LCD Monitor ?

Gateway Flat Screen FPD1830

\015 When the monitor is turned on after being off for a while, the screen is starts to come on, then flickers to black. Leaving the on switch "on" does not seen to make any difference, but after turning the switch on & off for a random number of times (the screen flickers on & off each time), the screen finally appears to "catch" the message, and flickers bright & dim a few times, to finally come to a fully bright screen. At this point, there is no more flickering until the monitor is turned off for a while.\015\012\015\012The "on" button light is "on" when the screen flickers black. When the screen finally does work, there is some "crackling" noise coming from the back of the monitor.\015\012\015\012There was been no new hardware introduced within the last year. This flickering started a few weeks ago.\015\012\015\012I get the strong feeling that something is warming up during this flickering period and may soon no longer work.\015\012\015\012Any ideas?\015\012\015\012\015

Answers :

I can not solve the problem, but I can add to it..My fpd1830 screen stays black with the power button green and flashing. I replaced the inverter board with a new one and it still does the same thing!!!!!
\015\012The inverter board is not always the solution to the black screen!!!!!!!!!
My Samsung 215TW started flickering like a strobe light when I would turn it on... then after a while, the speed of the flashing would change, and eventually, it would go out. After turning the unit on/off several times, I could get it to stay on, but after a while, it would start to get odd video noise (strange colors appearing on the screen), and then it finally quit.
\015\012
\015\012Once the monitor went dead, I noticed that I could still see the image on the screen, albeit very dark, so I took my desk lamp, and placed it next to the screen, and I could see that the monitor was still active, meaning that there was an actual image on the screen, it was just that the fluorescent lamp that lights the screen was not staying lit.
\015\012
\015\012I got tired of waiting for Samsung's customer service (thats a story all within itself), so I took the monitor apart in search for the problem (I am an electrical engineer and electronics specialist). I saw that there were two circuit boards, one being the power supply board, and the other being the video signal board. Knowing that there was still a video signal present, I focused on the power supply board, as it contains the transformers to ramp the voltage up to the necessary voltage to light the lamps.
\015\012
\015\012I instantly noticed that several of the radial electrolytic capacitors on the board were bulging and looked like they had swollen and then blown. There are 5 caps on my monitor that needed to be replaced: (1x) 47uF/50V, (2x) 820uF/25V, (2x) 330uF/25V.
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\015\012The 47uF and 820uF caps are on the power supply side of the lamp power circuit, and the 330uF caps feed the control signal into the IC chips that control the ballast of the lamps themselves, one for the upper lamp, the other for the lower lamp.
\015\012
\015\012Once I replaced these units, my monitor started functioning correctly, and I dont have to give Samsung my absolute most favorite monitor ever for a refurb unit that most likely will have 15 dead pixels on it (mine has ZERO).
Repair Help & Product Troubleshooting for Samsung SyncMaster 204B 20.1" LCD Monitor

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