Question about Samsung SyncMaster 793DF 17" CRT Monitor

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Samsung CRT Blank Screen

I have the same problem about a Blank Screen Green LED is Blinking.
But my CPU is working fine because it continues to boot infact I can hear the "Windows Welcome Sound"
Please help me I'm desperate!

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  • 65 Answers

1.Check O/P Voltages that time If U find abnormal voltage of vertical IC supply Pl change supply Diode&IC
2. check 5V supply,change 5v Regulator.

Posted on Oct 15, 2008

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1. cpu problem. why because of there is no signal output from cpu to monitor. the led blinking means there is no vertical, horizontal signals from cpu to monitor.

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Monitor is busted!


If your pc works on another monitor. I would recommend you buy a new LCD monitor or a used CRT.

The best solution if your computer works is to buy a LCD screen, I've thrown out my 17" crt screens they aren't worth anything these days. You can get a used crt from ebay


Over here where I live I bought a used crt for 25usd thats was over a year ago.

Theres really no point in trying to repair the screen if its broken, buy a working one or a brand new lcd.

Good luck.

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This problem may arise from monitor as well as from cpu.
First of all check it by unplugging the VGA monitor cable.
This will display the "Check Signal Cable" depending on the model of the monitor. But a message will appear rolling on the screen, if it is not a very old monitor.
If the message is appearing OK and green light is continuously on, that means ur monitor is working fine.
The problem may be with VGA cable or with the booting of CPU and probably the RAM. Recommended solution is to reconnect the RAM and then try, if u think u can do. Otherwise call a hardware engineer.
If there is no message and still the light is turning green and yellow. That means the problem is definintely in the monitor.

Thankyou,
Your well wisher

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