Re: Syncmaster 2493 - LED not lit, monitor won't power up
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Re: Syncmaster 2493 - LED not lit, monitor won't power up
I get 0 VDC, but 7.9 VAC when measured against the ground pin on the same connector. Not sure if this is a DC or an AC reading.
These readings are with only the PS sitting on my workbench.. do I need to connect the other boards back to it to check the PS_ON pin properly?
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Re: Syncmaster 2493 - LED not lit, monitor won't power up
Fuses test good.
I plugged it into a PC, and the PC detects the monitor, but the picture never comes up. With or without a flashlight shining on it. Turn the power switch to 'off' and it goes away on the PC, turn it on, it comes back on the PC, but the screen never illuminates and the power LED never lights.
The power LED does not light on the front of the monitor.
I attached some PCB photos....Last edited by johnwartjr; 05-05-2013, 08:25 PM.
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Syncmaster 2493 - LED not lit, monitor won't power up
I am working on a Syncmaster 2493.
The screen is black. The power LED never illuminates.
I have tried another power cord.
It belongs to a friend of mine who said it made a loud quacking noise before it failed.
I have a DMM, an ESR meter, and good rework equipment. I tested all the caps on the power supply with the ESR meter and all are within 10% of their rated values.
Any suggestions where I might start?
Thanks!
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Greetings
My name is John and I'm from Central Indiana.
I work on electronics frequently, mainly due to my hobby of collecting and restoring pinball machines from the 1980s and 1990s.
I joined today in hopes of getting some help fixing a Syncmaster 2493 which is dead - the power LED is not illuminated.
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Re: Samsung SyncMaster 2493HM black screen with power
I am working on a Syncmaster 2493 as well.
The screen is black. The power LED never illuminates.
I have tried another power cord.
If I connect the monitor to a computer using a VGA cable and power it on, the computer detects the monitor.
It belongs to a friend of mine who said it made a loud quacking noise before it failed.
I have a DMM, an ESR meter, and good rework equipment. I tested all the caps on the power supply with the ESR meter and all are within...
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