20 Most Recent LG 500LC Monitor Questions & Answers

It's hard to tell what the problem is without looking at the device itself. A straight-forward solution would be to replace IRF630 with a different MOSFET, that tolerates higher voltages. However, this is not an optimal solution because the problem might be caused by a malfunctioning power supply, a bad filter, etc. It would be of greater help if you provided voltages from the transistor's pins.

You need nto open it up and inspect it, here is the service manual; http://online.manualspace.com/computer-monitors-free-ebooks/lg-monitor-service-manual/4721/lg-studioworks-500e-500g-500n-color-monitor-service-manual-314.html

Possible failure of the power supply which can be a switch mode power supply .
Please find tips from the link below:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

your irf 630 is not original purchase it from proper LG authorised service centre it is costly but never become faulty again duplicate mosfet overheats if your green led is on then measure voltage at E.H.T.connect meter at output transister if E.H.T. is producing then meter should show 1 digit if not then 50v will show take care that signal cable should be disconnected if E.H.T. is not producing then check +vcc at horizontal ic it should be 12v. if 12v is not present then check regulator ic 7812 insmps

that is problem of diode near EHT that diode connected to big heat sink having three leads two series diodes in one diode replace it even meter shows ok .If persists then check mosfet irf 630 and path of its gate touch heat sink if it overheats then yoke is faulty replace it

check you video graphics adaptor inside the cpU. or you may try to use another CPU connect your monitor if it is ok their is a problem with your VGA or inside your CPU.

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.

See troubleshooting section of user manual on page 25 for help. https://gscs-b2c.lge.com/downloadFile?fileId=KROWM000342803.pdf For further help you can use this page LG E2240T-PN: Support, Manuals, Warranty & More ' LG India Support

Visit following website for original firmware Firmware LG Viewty KU990I for your region - LG-Firmwares.com

Full 'make model (what it is)' in all questions please, first 3 words. Capacitors can split or bulge, resistors can burn,, the transformer can fail internally.. Take it for repair unless you have the thousands of dollars of test equipment and have do the 2 year electronic course.

A communication error has occurred between the outdoor and indoor units. Faulty wiring or a malfunctioning control unit may be responsible. Contact LG customer service for assistance. Their number is 1 800 243 0000.

The F10 indicates that the electronic oven control board senses a runaway temperature condition in the oven through the oven sensor circuit

here is a link to unstructions copy and paste https://www.manualslib.com/manual/243281/Lg-W2043t.html#manual

https://www.fixya.com/support/r29872378-universal_remotes_no_facsimile_remote LG - 396, 405.

3 Digit Universal Remote Control Code List For ALL DVD ...

DirecTutor.com https://www.directutor.com > content > 3-digit-univers... 3 Digit Universal Remote Control Code List For ALL DVD and Blu-Ray. ADVENT - 899. AFREEY - 417. AIWA - 376, 414. AKAI - 357, 395, 435. AMES - 431. ..

You will need to connect a single HDMI cable from your sound bar to the HDMI ARC or the HDMI eARC port on the Roku T.Make sure that both of the devices are both turned on.When your TV detects the sound bar,it will then automatically initiate the setting up process. Lastly follow the easy on screen instructions to finish setting up the connection.