Question about Samsung SyncMaster 793DF 17" CRT Monitor

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Monitor Problem When I push th power switch, the green light won't come on when switch on. No picture, no green light . Pin3 DP904C is 11 - 12v DC

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The power is for the monitor to work

Posted on Apr 05, 2009

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Its a power prblem
u need to change the internal power conector

Posted on Feb 14, 2009

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Posted on Jan 02, 2017

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D945gccr MB NO DISPLAY I GUESS ITS BIOS PROBLEM


Maltesh,

1) IF ALL of the LED (Lights) were on they would use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts of power.

3) A typical Processor can use 51 to 125 Watts of power.

Intel D945GCCR motherboard?
Can use up to an Intel Core2 Duo E4700, (800MHz FSB), according to Intel Support,

http://processormatch.intel.com/CompDB/SearchResult.aspx?Boardname=d945gccr

An Intel Core2 Duo E4700 can use up to 65 Watts,

http://en.wikipedia.org/wiki/List_of_Intel_Core_2_microprocessors#.22Allendale.22.2C_.22Conroe.22_.2865_nm.29

Check the Power Supply.
A Power Supply with a weak voltage power rail, will have plenty of power to light LED's, and maybe spin fans, but Not enough power to turn the Processor on.

No processor, no computer.
The computer isn't generating a video signal.
No Signal to the monitor.

Do you have access to a multimeter, or DC Volt meter?
Test the three Low DC voltages coming out of the Power Supply.
A) 3.3 Volt power rail
B) 5 Volt power rail
C) 12 Volt power rail (ALL are DC voltage)

[ In comparison two D cell flashlight batteries store 3 Volts DC ]

Need guidance with testing post back in a Comment.

Or if you have a KNOWN to be good, and Compatible power supply, that you can borrow for a test, try it.

Regards,
joecoolvette

Aug 14, 2012 | Intel Motherboard

1 Answer

Pyle PLCM4300WIR


The Green wire is a reverse trigger wire. It should be tied into the reverse light hot wire. This tells the monitor to turn on and switch to Video 2 so that it displays what is seen by the backup camera. When you take the vehicle out of reverse thus removing power from the green wire, the monitor switches back to normal driving mode. ( no video displayed ).

Jan 15, 2012 | Pyle Car Audio & Video

1 Answer

Plasma TV PANASONIC TH-42PZ80B - when switch on green light at power switch flashes as per normal, but when goes to constant green light no picture or sound. it all worked last night!


If your light is green it means that your TV is turning on. Or else you would have a flashing light. So if the TV is no but you are not getting a picture it means that one of your Zustain boards is bad. Their are two on your TV one on th eleft and one on the right. You can check to be sure by checking if there is power from the power supply to the Zustain boards. If their is then either one or both are bad. You can check the Fuses on the Zustain board if one is bad then that is your BAD one. Just replacing the fuse is not going to fix it you have to actually replace the board. If the fuses are good your boards can still be bad you just have to figure out which one. If all else fails you can always replace both boards. To order parts you have to get the part numbers from the actual part. you can get parts from www.interliquidparts.com

Jun 13, 2011 | Panasonic TH-42PD50U 42 in. Plasma EDTV

1 Answer

TV does not turn on.


green light comes on when i push power button but no picture

May 31, 2010 | Panasonic TH-50PX75U Plasma HDTV

1 Answer

The adapter to my Western Digital Book does not respond


The monitor requires a adapter with a current output of 4 amps. but the Western Digital Book adapter can only supply 2 amps (half the current required by the monitor).
This means using the WD adapter on the monitor will stress this adapter beyond its capacity and continual use of this adapter on the monitor will cause it to fail and/or switch off if it has overload protection.
If you are having problems with the 2 amp adapter on the WD Book, then the power adapter could be faulty or it maybe OK when the adapter cools down.
I suggest you get a 12 volt 4 or more amps adapter for the monitor.
You may need an adapter for the WB book too if the adapter is faulty.

Dec 06, 2009 | Western Digital My Book Essential Edition...

1 Answer

When power light is green I have no display on the screen


dwanlesso6, Please tell me brand of monitor and if it is LCD/FPD and size 15,17 19 etc. If it is an LCD then it is possible that the DC power supply and or inverter board has failed. Here is short PS101 lesson. All electronic things (Stereo, printer, radio, computer, TV,) all require DC voltage. You get AC Voltage from outlet on wall. the two don't mix. ever!! All the above mentioned things have AC to DC power conversion circuits. They are called power supplys. Only your's and everybody's LCD monitor has two. One makes DC for the monitor logic/digital kinds of stuff, 5.0volts and also makes a
second and higher voltage ( 12v or 15v or 24v) to send to the other power supply which is called an inverter power supply. The inverter PS changes DC into a higher frequency Square Wave AC voltage to power up the Fluorescent Tubes that make your display "bright white" !! Do you own any of those new style light bulbs. You know... the ones that look like small coiled fluorescent tubes and screw into the same socket that previously held the old filiament type of light bulb. Well your dealing with the same technology in your monitor. Just for kicks, you can go to www lcd-monitor-repair. com. Don't pay any attention to the 'advertisement' !!!! just look at the pics of what is inside an LCD/FPD.
The advert just wants you to buy books on LCD/FPD repair.. The best advice I can tell you is try to locate some repair shop that specializes in FPD troubleshooting&repair. Hell, I too am waiting for this 19in GatewayFPD to die. Hope is later.. not sooner, or I'll be in same boat w/LCD/FPD for anchor. Good luck. I'm lmistyrel @ aol north of Chicago been in electronics >3decades

Jan 12, 2009 | Westinghouse L2046NV Monitor

2 Answers

Monitor Problem


First check the power switch with a multimeter,if its correct then check the power supply part of the monitor circuit. If you are having any problem with that part change the FET with another.

Aug 27, 2008 | Samsung SyncMaster 753S 17" CRT Monitor

1 Answer

Dell LCD E207WFP (Switches on Briefly then goes Off)


two case trouble reason and need to do:
1) back light driver (inverter) works not stable and DC power protect. it near some component damage, should repair inverter by egineer.
2) back light (lamp) over life cycle so protect by the inverter, should change new lamp (regular parts)
3) DC power supply not stable or component over life( wave filter capacitor), should be replaced

Aug 03, 2008 | Dell E207WFP LCD Monitor

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