After some time working, the Monitor starts to make a sizzling noise and starts to flicker. Any help and hint is appreciated.
Safety note: For best safety practice, unplug the unit
immediately. If you want to try and diagnose and/or repair it yourself, at
least move it to an open area free of anything that could flame up in case of
sparks or a fire. Mr. McLellen could be correct about the failing solder
joints. Since the symptoms increase as the unit heats up, I suspect it is more
likely an electronic component failure. The specific symptom you describe is
common in transformers with electrical shorts or with a cracked frame. Insects may also be the cause.
Some are specifically attracted to warmth and electromagnetic fields. To rule
out insects, take sample whiffs around the vent holes on the back of the unit
after it starts crackling and flickering. Electrical burns are distinct from
most other types, especially roasting critters.
SOURCE: LG L1900E flickering after cold start
This is probably due to a bad solder joint somewhere. Bad solder joints can effect a unit in the reverse also. IE works at first and then dies after it gets warm. Think about how metal expands when it is heated. And contracts as it gets cold. If there is a hairline fracture on one or more component joints, this would cause it to not have such a great or solid connection when it is cool, or contracted. As it gets warmer, the solder expands therefore filling the void and giving it a good connection.
Regardless, it will likely only get worse over time. If you're handy with a soldering iron, pop it open and reflow all the joints. Especially the ones on the transformers and copper coils. Best to hit them all, excluding the tiny surface mount devices.
If you need further help or if you'd like to have this, or any other LCD monitor repaired for a flat rate fee of $40, please visit my web site http://BoiseLCD.webs.com, or email me at [email protected].
BOISE LCD - LCD Monitor Repair
Chris McLellen
(208) 891-9117
[email protected]
http://BoiseLCD.webs.com
SOURCE: monitor flickers!!
I have also same problem with LG Monitor 700E, LB(in). I want circuit diagram/systematics of this monitor in PDF or any other format. Thanks in advance.
SOURCE: hi, my monitor started to flicker 3times/second persistantly.
its the monitor its the main board may stuff up tomorrow may stuff up next week or in a years time hard to day as its only flickering take in for a check up
SOURCE: LG Studioworks model (500G)CRT Monitor flickers most of the time
lg 500g studioworks green color
SOURCE: Green light flickering & Sunset red screen display.
You've got components that have gone bad, probably from age and the normal heat inside a CRT monitor case.
I hate to say it, but it's really not worth fixing. You can usually find a used but working 17" monitor for under 20 bucks.
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