sir, my LG 500G monitor it's cloure varying some time ping & some time dark read. i check all wires & shake them but no changes happen. i opened steel cover behind the gun (around 10 cm size squre)resold all big parts. no changes happen.i replace the steel cover.when i press the cover to gun direction i got orginal colour.when i release the clour is previouse stage. a technetion told me one of the gun brokened it have a loose contact.
I think this must be loose contact in socket or socket complaint. So take this to your area LG service center for service. check this link to get the service center info http://www.lgservice.com/
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