Re: Samsung syncmaster 305t blank monitor, no light from the power LED

Thought Iwould notify the screen works fine now. maybe I'll check solder joints if it would die again.

Thanks a lot for your help everyone

//Jon Brodén

Re: Samsung syncmaster 305t blank monitor, no light from the power LED

Strange now that connected everything together connected AC outlet, started the monitor, but it is flashing red, green, blue, gray and off, red, green ..... loops around so.
has now also 5.4V, 18V, 24V on outputs.
Is it possible that main processor chips that are faulty or?

Re: Samsung syncmaster 305t blank monitor, no light from the power LED



GND, 5.4V, 1.8V, GND, N.C, GND, 24V: I get only a few mV on each output.
6.0V, GND, Power on / off: 6.0V output, I get 6V and Power on / off, I get a few mV and when I press the power button at the front, I get 3V...

Re: Samsung syncmaster 305t blank monitor, no light from the power LED

Tanks all for the quick replies!
added some new pictures that might be better.




The other two fuses are intact.

Is it the green thats looks like a resistor where the large capacitor is? measured it with ohmmeter over the fuse and the measured zero ohms, or do I need to solder away and measure to be correct?
I have a red ring around that I believe are the green torpedo fuse in the first picture.



I measured the small yellow transformer...

Hi,

I have a bought an out of order Samsung Syncmaster 305t cheap in the hope of being able to fix it. The problem is that when connected to the AC outlet it would not start, and the LED on the power button does not light up.

I have picked apart the screen and when checked the power supply I saw that the large capacitor (450v, 150uF) was bulged. I then replaced the capacitor with the same values, even the remaining capacitors are replaced with new ones. Then I put together the display and connected to the outlet, nothing happens, still black and the start button does...