Question about LG 42PC3D 42 in. Plasma Television

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LG PK750 model plasma TV (new). Occationally the HDMI input is not working. I play a DVD on my PS3 for example with no issues, but when I switch to the DTV HDMI source, the DTV HDMI shows on the input of the TV but when switches to it, the screen is blank (the DTV box is running fine). I need to restart the TV and then the connection works as intended.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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Coldcut
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SOURCE: lg plasma

there are 2 types of flicker, one is the lamps that drive the display and the second is the sync signal of the video.
I assume the video sync is the flicker you see,
I would try connecting a different way to make sure it is not the tv,
connect using the aux /rca connectors to cable box.
and or connect using the cable direct bypassing the cable box.
I have seen several complaints about the hdmi cable signal being incorrect in some way,
this is the same issue that the svideo connector had in its early adoption signal was too hot or too low.
another thing to watch out for is the low light sensor on the front of tv if it gets an incorrect reading it can flicker the back light though it should be slow in doing so.
some times the flicker you see is not flicker but ac running through the sides of the picture from an ungrounded cable source.
how does it perform if you play a dvd player , with and without the cable box connected.

Posted on Apr 29, 2008

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jhall1793
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SOURCE: "No Signal" for PS3 using HDMI cable

jareddirk30:

you didn't mention what software version your ps3 is. in this digital age it's important to keep software levels up to date, with some exceptions. i'm including the web address for sony so you can update the ps3, but i don't think it's the problem. once you're are on their site you click on the ps3 picture & that link will take you to the software update pg. there you can review previous software updates. i quickly reviewed 1 of those & didn't see anything that addresses your problem.

http://www.us.playstation.com/Support/SystemUpdates

have you verified that the HDMI inputs are are enabled correctly? thereare 4 inputs. refer to pgs 25 & 26 of the owner's manual.

I would put the heat on your LG retailer. clearly the new main board is suspect. you had the functions prior to the swap. the board is probably defective, but with a different problem than what you had previously. i visited LG's site. they currently have nothing in their knowledge base that mentions the your problem, nor is there a software update.

if you need additional help. write back. good luck.

peace-out

Posted on Feb 11, 2009

jojack2k5
  • 34 Answers

SOURCE: HDMI Cable dosn't work? AVI only. WHY?

chk factory outgoing settings in service menu

Posted on Apr 29, 2009

SOURCE: hooked up cable box, wii box and dvd player to new

Connect the Wii and the DVD player to different ports on the TV to and any other device to the port in which the Wii and the DVD player were connected to check if the issue is with the port.

If other devices also display in black and white after connecting them to the port to which the Wii and the DVD player were originally connected then the ports require servicing.

Posted on Dec 01, 2009

  • 2 Answers

SOURCE: connect tv to cable box with hdmi lead

You will need an HDMI to DVI cable which are available in the shops, even ASDA has one but I don't know how good it is. Or you can buy an adapter that will plug into one of the ends of the HDMI cable and then plug into the DVI socket at the back of the TV. The DVI input is video only so you will need audio leads for sound. These will connect from the output of your source, say, blue ray or sky HD (Left and right audio sockets ) to the audio L/R at the back left of the TV (on the block next to the three component video connections and s-video connections)

Posted on Jan 28, 2010

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Sounds like the Tv your using is faulty. Its could have hardware failure. You did say it PS3 was working on hdmi on a plasma. If your using the default hdmi cable that came with ps3 that also can be faulty. I have always had problems with the default hdmi so i bought a new one that was not SONY and it works beautifully. Another thing the black screen with green is a video cable or graphics issue.

Does this tv work if there is no ps3 connected? if so i recommend using the standard PS3 Component AV Cable. see if that will let you reset your ps3.


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if the Comcast cable box has an HDMI output, it should connect directly to one of the TV HDMI inputs. Then connect the LG DVD unit HDMI output to the second HDMI input of the TV. Use two HDMI cables. Do not buy the expensive Monster HDMI cables. If you have already done so, I recommend you take it back for a refund, then buy the low cost HDMI cables which will work just as good and then you can bank the savings toward a new Porsche Boxter!! Now we have the video connected from both the cable box and the LG system.

Now--what do you do if the cable box does not have an HDMI output--just use its component output and your component cable (red, blue and green) to connect to the TV component input. This will still get the video to the TV and good HD pictures. Hum--do you have an HD cable box? You did not say and I just assumed that you did since you got the HDTV. If not, let me know with a follow up question and I will assist in that area further.

Now for the audio connections--The DVD player will not need any connections since it in the LG unit. The sound will come out the speakers when you start playing the DVD. The cable box is where we get the TV audio to feed the LG unit. If the cable box has an optical output, use an optical cable (again the low cost one)and connect to the optical input on the LG.
This will get the TV audio to the surround system. If no optical output, use the red and white (left/right) audio connections and connect to one of the two the LG audio inputs. To hear TV audio on the LG speakers, just switch to that input or the input associated with the optical input.

To watch DVDs, switch the TV to the HDMI input to which you connected the LG unit. For TV, go to the other HDMI input (or component input).
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Hope this gives you food for thought. If so, and you have more questions, just come back in with a follow up.

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I had the same problem with my PS3. I have a HD cable box with HDMI out, a Sony DVD player with HDMI out. The Sony receiver STR-DG800 only has the HDMI inputs (sat/tv and dvd) and the HDMI is only a pass through port and will not decode audio.
I purchase a HDMI 4 port switch from Newegg (HS-41A0 http://www.newegg.com/Product/Product.aspx?Item=N82E16812168003&Tpk=HS-41A0) to hook up the DVD and PS3 to the DVD HDMI and switch between the DVD player and the PS3. It took me several days to figure out how to make this work with the settings on the reciver.

1 the DVD player must use the coaxial in jack for sound on the receiver.
2. the PS3 must use the optical connection on video1
3. the sound settings in the PS3 must be set to PCM
4. set the sound setting on the receiver to the following

a. on the remote press AMP button then the MENU button, next press the down arrow to you see 5- AUDIO SET - then press enter.
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So when you use your remote and select DVD, you can use your PS3 or DVD through the 1 DVD HDMI port.

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