Question about LG Studioworks 700S 17" CRT Monitor

Open Question

700e circuit diagram lg monitor

Horizenta section trasistor was burn

Posted by Anonymous on

Ad

5 Related Answers

ginko

Ginko

  • 19396 Answers

SOURCE: LG 700E monitor's power LED blinking continueously, no display

The monitor is probably on protection.

To start unplug monitor from power and from computer and test computer with different monitor to find out if it is monitor or computer fault.

If it is computer fault and no video signal , then test:

  • Video cable.
  • Video adapter on PC (sometimes integrated on motherboard)
  • Motherboard.

If it is monitor fault , then the monitor is on protection.

When on protection you keep having a flashing led on front of the monitor , and monitor turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the Monitor goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or a broken contact, identified an internal fault and kicked in , starting the flashing light.


If you are in situation one, then the monitor will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occurr are a blown capacitor on power board, faulty inverter board, faulty input board, or a fault on LCD Digital Controller board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.

Try moving the video cable, and if the cable is not built in, then also try a replacement cable.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

Posted on Apr 22, 2009

Ad
pgmadhav

pgmadhav

  • 145 Answers

SOURCE: blinking of moniter 700e lg

I think that two capacitors in the powers supply circuitry(incise the monitor) has gone bad. Just open and you'll see them.
This should solve your problem.Best of Luck.Please rank me appropriately. If you want any clarification, Please get back to me

Posted on Jul 27, 2009

Ad

Anonymous

  • 10 Answers

SOURCE: 700e Lg crt monitor problam power on eht on but not display

The normal crt monitor have a demo display when you unplug the vga cable to PC like this image below.. fd6b6b9.jpg
Note:
If the crt monitor green LED light steady and heater beam have light, the horinzontal and High Voltage supplied to tube is completely good. If you encountered this problem just focus on video section of crt monitor. But before you start... find the flyback transformer behind this they have two controls screen & focus. After you found it plugin the monitor use plastic precision or small screw philip driver for safety to high voltage at horizontal area choose screen control rotate it to clockwise direction follow this....
5b5166c.jpg If the display responses or from dim to lighter 100% you have a problem to ABL find this at the bottom of horinzontal section near at flyback transformer pins trace the line of ABL for dried solder, open resistor if nothing happen find the Video IC at chroma section and replace it. follow this...
3c6e89c.jpg For LG & Redfox you found LM1269NA Visit this site for seaching semiconductor matches www.alldatasheet.com Good luck.

Check this site for searching semiconductor
www.alldatasheet.com

Posted on Aug 25, 2009

Anonymous

  • 1 Answer

SOURCE: How to adjust lg 700e monitor screen shape, size

desktop size told me

Posted on Apr 18, 2010

Anonymous

  • 10 Answers

SOURCE: LG 700E CRT 17" monitor,

problem with the monitor Display cable. it is damaged.

Normally monitor will receive 3 colors red, green, Blue signals from CPU. If one cable i.e Red wire connection is missing in display cable which is connected to monitor, Red color image on monitor wil be replaced with other fade color.
So, need the replace the display cable or display connector!

Posted on Dec 10, 2010

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Is burning my component, I need trasistor M50D060 s thank you


You have bigger problems than just the IGBT. I replace that part with part number:

APT28GA60BD15

About $6.50 from Digikey.com

You will probably find one or both of the gate speedup diodes blown PN DL4148 surface mounted an one or more of the driver transistors 2SSA1020-Y and 2SC2655-Y blown and usually the IR2153 switching regulator chip. If you haven't blown the 10 ohm ceramic pre-charge resistors you are lucky. Put a 150 watt lamp in series with the power cord to save fuses and parts till it is repaired. If you don't have schematic get back to us.

Aug 29, 2011 | Behringer Pmp3000 16 Channel Audio Mixer

1 Answer

How do i get the cd out


if the eject button has stopped working you will have to take the unit apart to get the cd out. make sure to unplug the radio and remember there is always power stored in the trasistor section of the radio.

Dec 23, 2010 | Sony CMT-HPZ9 Shelf System

1 Answer

Under AC 110V condition, everything looks fine pretty well, but it is not worked completly under AC220V condition. What's problem??


I give 240 supply and set smps switch setting was 115, so transistor was blast, so trasistor no was erase, so plz send me trasistor no.

Nov 29, 2010 | Enhance Technology (ATX1140H) 400-Watt...

1 Answer

There was a electrical flash and a burning smell completly lost power and could not restart


problem power supply some of components are demage.Capacitor,diod,trasistor etc.
thanks
xptareq2000

Nov 23, 2009 | LG 32LG30 32 in. LCD HDTV

1 Answer

Sony tv will not turn on


the power supply is a switched mode. you need to take your tv to a w/shop, and let them check the following.
powersupply rectifier diodes, power trasistor lekage,
diodes, zener diodes,
if a 90-110 volts to the line trasistor,
a line transistor be checked.
the tv simple problem

Mar 29, 2009 | Sony FD Trinitron WEGA KV-32HS500 32" TV

1 Answer

Toshiba CZ32V51


two things can be affected, a tuner if you were using out door
the other one is the power supply. the tv sensed a high voltage (surge)
firstly you need to repair a supply, check the following.
i rectifier diodes at the power supply
ii power trasistor, driver trasistors diodes, zener diodes
ii fusable resistor near a power transistor
after the tv will come on ----if they will be light on the tube then test a tuner, by putting in signal.

Jul 08, 2008 | Toshiba CZ32V51 32" TV

1 Answer

No picture or sound after a few minutes, replaced blown C812 but problem returned


Hello to all, I have a tv zenith model C27V36, and it has a problem I connect it in the series and it does not turn on and I connect it to the network(net) and immediately burns (damages) the horizontal exit that is a trasistor C5905 and it burns (damages) both resistances of the protection,I changed the trasistor C5905 for a trasistor C3997 that is 20 amps and nonetheless it burns it,there are no signs of short circuits. Could the problem be the high horizontal ocsilacion?? But since turning it on it burns(damages) the horizontal exit I do not have way of checking it, because it is automatically damaged . can someone please tell me what to do in this case??? Or where I can find an electronic diagram or a sketch??? Or can someone who has worked on this TV before h
help me out?? It is a zenith model C27V36 of 27 "..
thank you for you help.

May 15, 2008 | Zenith C27V36 27" TV

1 Answer

My bx2200 cut off as soon as it was turned on and started smoking?


these are the trasistors..The ones closest to the power connectors are probably the ones for power supply and or 15 volt regulators..The rest are for amplifier section.Im guessing all except regulatos will be MOSFET transistors .If you are to replace them ..Stick to original parts..You can probably find these at mcmelectronics.com or mouserelectronics.com Just give then the numbers on transistors .Also make sure all other parts around shorted parts are okay before you install new parts..

Dec 09, 2007 | Hifonics BX2200D Car Audio Amplifier

2 Answers

32v434t dead


please go according to procedure 1 isolate h/output section supply. 2 check power supply output is ok if not repaire it. 3 after power supply is ok 4 check hor osc, driver &output if problem repair it. 5 check for loose contact or print break. 6 connect supply to hor section. set will work fine. good luck.

Sep 21, 2007 | RCA 32V550T 32" TV

Not finding what you are looking for?
LG Studioworks 700S 17" CRT Monitor Logo

Related Topics:

470 people viewed this question

Ask a Question

Usually answered in minutes!

Top LG Computers & Internet Experts

Lee Hodgson
Lee Hodgson

Level 3 Expert

4810 Answers

Muntejaya Ginting
Muntejaya Ginting

Level 3 Expert

10422 Answers

k24674

Level 3 Expert

8091 Answers

Are you a LG Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...