Question about JVC AV-48P575 48" Rear Projection HDTV-Ready Television

9 Answers

HDMI no longer working

I was messing around with the service menu, tweaking settings trying to get my JVC looking it's nest and somehow turned off the HDMI port. I was watching HD through HDMI and now it doesn't work. It doesn't even show up as an option when cycle through inputs. Help!

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  • Anonymous Jan 06, 2008

    having the same problem as you. i bought a hd directv receiver, plug in the hdmi port for the first time and nothing...been searching for 5 hours now with no luck.

  • Len0315 Jan 14, 2008

    That is weird. My HDMI did work, i just screwed it up. I haven't been that happy with this set but can't afford anything better right now. I really think that the component cables look better than HDMI did, there is less pink and blue around letters and small objects. Sorry I can't help you out any, maybe someone else can help us.

  • Len0315 Feb 19, 2008

    OK, I think I have fixed this somewhat. I reset the HDMI board by going into the service menu and going to the self check screen, turning the tv off, unplugging it for 30 sec. and plugging it back in and turning it on. Now when I go to the self check screen it tells me HDMI is OK, before it had several errors. I still cannot select "Digital" as an input, it only sees the 3 AV inputs on back and the one in front. Any thoughts?

  • Anonymous Feb 20, 2008

    Thank you for your response. I was able to get to the other menu now and my options are as follows:


    1. I2C STOP

    4 SELF-CHK

    ROM VER. : MN102H75KPL 0000

    So I chose number 4 for self check and got this:

    XRAY ok

    LOB ok

    SYNC M: ok

    MEM ok

    VCD ok

    AIO ng 9

    TUN ok

    PP ok

    HDMI ng 9

    OCP ng 9

    TIM ok

    S: ng hd: ok

    AVSW ok

    YC ng 1

    IP ng 9

    SPRT ok

    Any help translating the would be much appreciated. It seems I have a bunch of ng (not good maybe what it stands for?) in 1 and 9. Thanks again for getting me this far.

  • Anonymous Feb 20, 2008

    I went to the self check screen and turned the tv off for a min and then turned it back on and checked the service screen under self check again and it showed me all options were ok. I went to the digital in input and still have nothing on the screen so I checked the self check menu again and it showed me ng 9 under hdmi again...It seems no matter what i do it shows good under all other screens but goes ng9 when the digital input comes up. I tried it plugged into a device, not plugged in, no cable plugged into the tv at all...always shows ng9. Am I missing something here? Thanks guys



9 Answers

JVC AV-48P575 HDMI reset procedure:

1. Unplug HDMI cable from tv.
2. Unplug the tv.
3. Remove the rear (low) back cover.
4. Find the 6 pins on the board of the HDMI module and shortcut the pins no.1 and no.2 using a jumper(i use an old hard drive jumper).That's the higher to pins if you can't see the number.
5. Put back the rear cover.
6. Plug the tv.
7. Turn on the tv.
8. Unplug the tv(without tunrning it off).
9. Remove the back cover.
10. Remove the jumper on the pins 1 and 2.
11. Put back the rear cover.
12. Plug the tv and you're done.

Posted on Nov 07, 2008

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Well the jumper on the board thing worked for me for about 6 hours then back to black.
The error I am getting is HDMI NG9 and AIO NG7

Posted on Nov 04, 2009


OK, great. I'll give it a try and post my results. Thanks for the advice!

Posted on Nov 08, 2008

The only thing I am not comfortable with is this:
"4. Find the 6 pins on the board of the HDMI module and shortcut the pins no.1 and no.2 using a jumper(i use an old hard drive jumper).That's the higher to pins if you can't see the number."
I've never done anything like this before, where could I get a hard drive jumper?

A hard drive jumper is little thing use to connect two pins together by sliding it over the two pins we want to connect together. Anything you can use to make a steady contact betwenn the two pins will do the job but a jumper is the easy way to do it because the pins are really small. Any computer shop will have these.

Posted on Nov 08, 2008

The only thing I am not comfortable with is this:
"4. Find the 6 pins on the board of the HDMI module and shortcut the pins no.1 and no.2 using a jumper(i use an old hard drive jumper).That's the higher to pins if you can't see the number."
I've never done anything like this before, where could I get a hard drive jumper?

Posted on Nov 07, 2008

That's weird that it keeps coming back. When you turned the TV off from the menu with all the number codes (the NG screen) did you also unplug it for 30 secs? Mine are all OK, but I still can't select Digital as an input. Also, my Super Focus button on the front panel doesn't work anymore. I don't know what to tell you now man, sorry. This is as far as I've gotten.

Posted on Feb 26, 2008

Hmmmm ... Maybe you guys should read through your manual and you will find that your not supose to see the "Digital Input" on the input menu when plugged into the HDMI port.

This tv is awesome!!!!!!!!

Posted on Feb 26, 2008

Hey, it is another service menu screen. you access it the same way, except push the sleep timer button until you see 30 min, then push display and video status. self check is #2. if any of the categories has "NG" followed by a number, that means that the is an error. See what you can find out.

Posted on Feb 20, 2008

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My service menu shows 9 items none of which is a self check screen. What does yours look like? How did you get to this screen? Thanks

Posted on Feb 19, 2008

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sorry the font change on me. this unit has compatbilty issue with some hdmi sorces. there is also a safety interlock sensor if it see extra light it thinks your trying to do something wrong and locks up hdmi.
WARNING. Service mode can result in further damage to set. Care should be taken not to mess with settings unless you know what they are.
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(2) Press the [VIDEO STATUS] key and [DISPLAY] key
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(3) When the Main Menu is displayed, press [2] key to enter
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