20 Most Recent SAMTRON 77V 17" CRT Monitor Questions & Answers

12 pin crt base data layout

SAMTRON 77V 17"... | Answered on Oct 22, 2013

either the monitor is not receiving the signal from the computer graphic card or the monitor is bad

SAMTRON 77V 17"... | Answered on Mar 26, 2012

I would go to the web site or talk to the Manufacture tech support and they will tell you if your monitor is bad. If the monitor is good I would look for the graphic card gone bad on you..

SAMTRON 77V 17"... | Answered on Mar 26, 2012

CRT monitors after time eventually start to blur. This is just a sign of age, and you should probably think about getting an LCD monitor some time soon.

SAMTRON 77V 17"... | Answered on Mar 05, 2011


The screen is blank with no raster at all. There are indications that the channel numbers are changing in the display. This indicates that some of the low voltages are present but these may be derived from the standby supply.
Assuming there is no deflection and no High Voltage, you either have a low voltage power supply problem, bad start up circuit, or bad horizontal output transistor (HOT) or other bad parts in the horizontal deflection.

Check for bad fuses.

(If you have High Voltage as indicated by static electricity on the front of the screen and you hear the high pitched whine of the horizontal deflection when it is turned on, then the following does not apply).

Use an ohmmeter to test the HOT for shorts. If it is bad, look for open fusable resistors or other fuses you did not catch.
Assuming it is good, measure the voltage on the collector-emitter of the HOT (this is safe if there is no deflection). You should see the B+ - probably between 100 and 150 V.
If there is no voltage, you have a low voltage power supply problem and/or you have not found all the bad/open parts.
If there is voltage and no deflection (no high pitched whine and no HIGH VOLTAGE), you probably have a start up problem - all TVs need some kind of circuit to kick start the horizontal deflection until the auxiliary power outputs of the flyback are available. Some Zeniths use a simple multivibrator for this - a couple of transistors. Others power the horizontal osc. IC from a special line-derived voltage. The multivibrator type are sometimes designed to fail if someone keeps turning the set on and off (like kids playing) since the power rating is inadequate.
Test the transistors if it is that type with an ohmmeter. If one is shorted, you have a problem. The usual way a TV service person would test for start up problems is to inject a signal to the base of the HOT of about 15.75 kHz. If the TV then starts and runs once this signal is removed, the diagnosis is confirmed. This is risky - you can blow things up if not careful (including yourself).

If you hear the high pitched whine of the deflection and/or feel some static on the scree, confirm that the horizontal deflection and high voltage are working by adjusting the SCREEN control (probably on the flyback). If you can get a raster then your problem is probably in the video or chroma circuits, not the deflection or high voltage.

hope this helps......

SAMTRON 77V 17"... | Answered on Aug 06, 2010

there are four buttons on the monitor . press all four buttons simultaneously untill OSD unlocked message will appear . same procedure for OSD lock.

SAMTRON 77V 17"... | Answered on Jun 21, 2010

that is a fault of yoke inside the crt monitor it should replaced by some technical person

SAMTRON 77V 17"... | Answered on Apr 04, 2010

Dear mombaldwin06,

Press and hold menu button for 5 Second. It the way to unlock control function.

SAMTRON 77V 17"... | Answered on Feb 05, 2010

To unlock your monitor, Press and hold the Menu button for 5 - 10 sec. and the OSD menu should be released.

SAMTRON 77V 17"... | Answered on Apr 30, 2009

you will need to ensure that the drivers for your video card are updates as the windows 98 SE install disk may not have valid drivers for our video card what model of video card do you have or if it is inegrated wideo what motherboard model do you have

SAMTRON 77V 17"... | Answered on Jan 01, 2009

go to your desktop and right click and choose personalize then click display settings and changeit

SAMTRON 77V 17"... | Answered on Nov 30, 2008

17inch LG moniter data cabal brak down

SAMTRON 77V 17"... | Answered on Apr 06, 2008

This is the way how to check what's wrong with your monitors. After you turned it on and the screen went black, you have to check that if you can see the image on the screen or not by shining a flashlight into the screen, not directly but find the best angle to the screen and take a look very closely. If you can see the icons or any image, there will be a minor problem. This is because of the lamps inside screen. Some of them were broken and it is very easy to replace. If you cannot see anything on the screen, there'll be some problems with inverter board. If you have soldering tool and want to fix it by yourself, check the caps first. It may cause this problem. Some caps might show leaking or burn spot on the board because of too high temp. If you don't have soldering tool, you better go get a technician to do so. Hope this help!! If anything I can help you with, feel free to let me know.
Thank you,

SAMTRON 77V 17"... | Answered on Mar 09, 2008

If you have Samtron 56 V monitor that sometimes switch ON for 10 to 15 minutes, then it is a signal of some internal device fault which needs to be rectified from certified hardware technician from monitor manufacturer service center itself. It is recommended to directly contact Samtron for hardware replacement if it is under warranty or ask to repair it.


Samtron... | Answered on Jun 24, 2016

d problem is in a transistor costing little, situated near d monitor's osd control ic (microprocessor), it is probably short....[refer the connection n area around the front panel cn connector and crystal clock generator]..beware u must b a professional

Samtron... | Answered on Oct 29, 2009

They are inputs: Red, Green, Blue, Horizontal & Vertical.
Monitor Mike

Samtron... | Answered on Jan 21, 2009

This problem is caused by the Novatek chip on the video board. Soldering a 50 Ohm Resistor across pins 5 and 6 of this chip resolves the problem on both the Samtron and the Samsung monitors. I have just corrected one of these last night by this means.
Hope that helps

Samtron... | Answered on Jan 12, 2009

Follow steps in sequence:

1. Turn Off Monitor by pressing power button on LCD
2. Shut down computer
3. Unplug power cable from LCD, Once power cable is unplugged from LCD, press and hold down the power button on LCD for 15 seconds

4. Unplug the power cable from the back of Desktop Computer and Hold down the power button on desktop computer for 15 seconds

5. Plug the power cables back into the LCD and Desktop Computer

6. Power on computer and then power on LCD, it should work

Samtron... | Answered on Oct 06, 2008

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