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Check power section for proper power supply. check main capacitor or change it .if this problem not solve then check horizantan output transistor(this is placed near eht on hit sink big in size)
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If you tested that to another working CPU but the same problem before, i think that monitor has a problem in horizontal section, check the B+ atlaest 175v if is it normal the power supply is ok, check the H.O.T horizontal output transistor, remove or hang the 3 pins then power on the monitor, if the led did not blinking the H.O.T has fault may be leak,open or shorted.
1.poewr LED blinking or not.if in case LED blinks one time. problem in LOT .Cheak horzontal Transistor also.
1a) power out put voltages
2.drypoints in neck board.
3.cheak display cable.
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.
2. your monitor connected to another system.
3. neck board dry points.
4. cheak the display cable. 13&14 pins are horizontal, vertical signals.1, 2, 3 pins , R G B , 6 ,7, 8 pins R G B ground ( coaxiler cable used , meshed wire is ground )
The blinking LED usually denotes that no signal is reaching the monitor.
Do you have another monitor you can attach to the computer to test it? It sounds like it may be a computer problem, not a monitor problem.
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