Antenna used to work just fine on LG50px1D then a couple of weeks ago, signal strength went from good to bad. Went from having over 40 channels to one then none. Plugged in another LG tv to see if it's the antenna but that one picked up all the channels just fine so it must be the LG 50PX1D. All other inputs work just fine but just can't get the over the air signals anymore. Any idea what can be done ?

SOURCE: tv has no signal

sounds like the EDID data has been corrupted in your main board. it can be reprogrammed but most techs will just replace the board. either way someone will have to come out and look at it. it should have a 2 year parts and labor warr on it. call LG cust service and get someone out there.

SOURCE: LG 50PX1D 50 in. Plasma TV

i just had the same problem. after talking to many tv repair people i finally got a knowledgeable person to help me. i ordered the part and fixed it myself.
it was very easy. i have an LG model# 50px1d. so if you had this problem i suggest you order the part yourself and fix it. i got an estimate for repair and it wouldv'e cost me at least $500 parts and labor. i paid $230 for the part. so you can see i saved a little more than half. the part you need is the " Z SUS " ASSEMBLY. you can order the part from LG website. the part # is 6871QZH044C.
let's just say after doing everything myself, i am watching TV right now.
by the way LG would not help me at all. spread the word that LG is not a good product.

SOURCE: LG 50PX1D (Popping noise)

Hi you need the y-sus board. You May find it @ partstore.com Thanks.

Testimonial: "Thank you, can I fix this myself?"

SOURCE: LG 42LB5D-UC cannot find channels when scanning

No,Ur Digital antena not getting a good signal,because of lanscape like hills or big buildings,blocking the signal,that why u not getting good signals,or no signals at all.Buy another name brand digital antena with a stronger signal amplifier.Or buy a digital roof antena,well help or solved these problems.

Testimonial: " "

SOURCE: only av input is working LG 42LC7D TV

I may put money that some one did stole your internal cable from the power supply to the main board !

Don't be surprised they did it to me at LG company .