SOURCE: I have an LG 47
Tries reset the tv and cable box,by unplug,replug both devices about an hour later.Let the cable boot up and update it softwares.Goto tv Menu goto PICTURE,go down to reset.The Tuner board it reseting to the Factory setting.The HDMI hubs,should all works now.Not than,the tv Tuner board have problems,must be change.Tries Shopjimmy.com,Ebay.com to buy a refurbish a Tuner board for the replacement.
SOURCE: LG HDMI problem
have you found the solution for this problem because i have the some problem with my tv??
SOURCE: only one of 3 hdmi ports work
If all 3 are side by side or even on same board I would suspect physical damage is the problem first--those HDMI sockets are not very sturdy and considering the way they are solder in not usually replaced by themselves.
We in our shop are not lazy but will usually just replace the board they are connected to if suspect the problem is not elsewhere in the set.
Lets face it--those were never meant for hard use-like plugging and unplugging a lot not to mention the poor quality of parts used in many cases.
Google the model with "parts" or visit the LG site---I have seen brand new out of the box sets with bad ones--the average person is much stronger than those sockets are. Makers of lap top computers learned this lesson early on and went to better made USB sockets for this precise reason.
Testimonial: "Yeah just as I thought, cheers, I seem to can locate a part for every tv model but mine but! Might just see if its a cheap fix or maybe its time to upgrade"
SOURCE: hdmi ports om our lg tv are not working
yes you have to replace the mainboard just buy the part yourself and install it there's not much to it buy the part @ www.shopjimmy.com
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