HDMI problem on RP JVC

J

jordo

Guest
I have a JVC rear projection tv that I bought second hand a little over a
year ago. It works fine except for the HDMI input. When I plug it into my
cable box and switch to the digital input, it can't detect anything (and
says it's gonna turn off in 9 minutes if nothing is connected before then
:)). However, if I plug in my computer via a dvi/hdmi cable, the tv still
doesn't detect a connection, but the computer recognizes the tv for the
model number that it is. There is no setting in the tv that can affect the
input, from what I can find (and I went over all the menus multiple times).

Any ideas on what might be causing this? If it's an electrical problem, is
it worth my time to get an electronic technician to fix it?

Jordan
 
Dave Plowman (News) wrote:
In article <7I8ik.1480$nu6.909@edtnps83>,
jordo <notmy@email.address> wrote:
I have a JVC rear projection tv that I bought second hand a little over
a year ago. It works fine except for the HDMI input. When I plug it
into my cable box and switch to the digital input, it can't detect
anything (and says it's gonna turn off in 9 minutes if nothing is
connected before then
:)). However, if I plug in my computer via a dvi/hdmi cable, the tv
:still
doesn't detect a connection, but the computer recognizes the tv for the
model number that it is. There is no setting in the tv that can affect
the input, from what I can find (and I went over all the menus multiple
times).

Any ideas on what might be causing this? If it's an electrical problem,
is it worth my time to get an electronic technician to fix it?

Dunno if it's any help, but my Sagem DLP detects any of the many inputs
coming alive and switches out of standby - except the digital one which in
this case is a DVI type.

I've checked all of my inputs while the HDMI is plugged in, but it
Click to expand...
doesn't show up anywhere. I was reading on some forums that the HDMI
can be disabled by various things and that it can be re-enabled by doing
a "system" check in the service menu (and it gives the steps to do
that). However, I cannot find the steps to get INTO the service menu!
 
On Fri, 25 Jul 2008 00:00:03 +0000, jordo wrote:

I have a JVC rear projection tv that I bought second hand a little over a
year ago. It works fine except for the HDMI input. When I plug it into
my cable box and switch to the digital input, it can't detect anything
(and says it's gonna turn off in 9 minutes if nothing is connected before
then
:)). However, if I plug in my computer via a dvi/hdmi cable, the tv still
doesn't detect a connection, but the computer recognizes the tv for the
model number that it is. There is no setting in the tv that can affect
the input, from what I can find (and I went over all the menus multiple
times).

Any ideas on what might be causing this? If it's an electrical problem,
is it worth my time to get an electronic technician to fix it?

Jordan
Click to expand...
Does the output of the cable box match the resolution capabilities of the
tv? If the box is set to 1080p and the tv won't do over 1080i then it may
give you these symptoms. This is probably not the case but was worth
mentioning.
 
On Fri, 25 Jul 2008 00:00:03 GMT, jordo <notmy@email.address> wrote:

I have a JVC rear projection tv that I bought second hand a little over a
year ago. It works fine except for the HDMI input. When I plug it into my
cable box and switch to the digital input, it can't detect anything (and
says it's gonna turn off in 9 minutes if nothing is connected before then
:)). However, if I plug in my computer via a dvi/hdmi cable, the tv still
doesn't detect a connection, but the computer recognizes the tv for the
model number that it is. There is no setting in the tv that can affect the
input, from what I can find (and I went over all the menus multiple times).

Any ideas on what might be causing this? If it's an electrical problem, is
it worth my time to get an electronic technician to fix it?

Jordan
Click to expand...
Has the TV ever been serviced? I've heard that some Pioneer TVs are
booby trapped so that if the set it plugged in with the back cover
removed, it disables the HDMI input. They are worried that you might
be trying to steal Hollywood movies.
Andy Cuffe

acuffe@gmail.com
 
I said Pioneer, but I meant to say JVC. Both companies have made
booby trapped sets.
Andy Cuffe

acuffe@gmail.com
 
Andy Cuffe wrote:
I said Pioneer, but I meant to say JVC. Both companies have made
booby trapped sets.
Andy Cuffe

acuffe@gmail.com
Yeah, I read about that happening with my system. I don't know that
Click to expand...
it's been serviced before since I got it second-hand. I'm thinking that
might be the case and can reset it, but only if I can get into the
"service menu", which I can't get into because I have no idea how to. :)
I've looked online to try to find out how, but no luck so far. :S
 
"Meat Plow" <meat@petitmorte.net> wrote in message
news:229hpo.7nq.19.2@news.alt.net...
On Fri, 25 Jul 2008 00:00:03 +0000, jordo wrote:

I have a JVC rear projection tv that I bought second hand a little over a
year ago. It works fine except for the HDMI input. When I plug it into
my cable box and switch to the digital input, it can't detect anything
(and says it's gonna turn off in 9 minutes if nothing is connected before
then
:)). However, if I plug in my computer via a dvi/hdmi cable, the tv
still
doesn't detect a connection, but the computer recognizes the tv for the
model number that it is. There is no setting in the tv that can affect
the input, from what I can find (and I went over all the menus multiple
times).

Any ideas on what might be causing this? If it's an electrical problem,
is it worth my time to get an electronic technician to fix it?

Jordan

Does the output of the cable box match the resolution capabilities of the
tv? If the box is set to 1080p and the tv won't do over 1080i then it may
give you these symptoms. This is probably not the case but was worth
mentioning.
Click to expand...
No stupid. If that was the case then the T.V. would say "Incompatible Input
Signal" or some shit like that.
 
On Fri, 25 Jul 2008 00:00:03 GMT, jordo <notmy@email.address> put
finger to keyboard and composed:

I have a JVC rear projection tv that I bought second hand a little over a
year ago. It works fine except for the HDMI input. When I plug it into my
cable box and switch to the digital input, it can't detect anything (and
says it's gonna turn off in 9 minutes if nothing is connected before then
:)). However, if I plug in my computer via a dvi/hdmi cable, the tv still
doesn't detect a connection, but the computer recognizes the tv for the
model number that it is.
Click to expand...
To recognise the TV, the computer only needs to be able to read the
TV's EDID EEPROM via the DDC pins in the cable (pins 6,7,14,15):

http://pinouts.ru/VideoCables/hdmi_dvi_cable_pinout.shtml

I have managed to read a powered-down monitor's EDID EEPROM using my
device programmer. I made a VGA DB15-to-DIP8 adapter cable and told
the programmer that it was connected to an Atmel AT24C21 serial EEPROM
which has a "DDC1/ DDC2 Interface Compliant for Monitor
Identification".

You can find the EDID in the registry at the following key:

HKEY_LOCAL_MACHINE\Enum\MONITOR

If you export that key to a .reg file, you will see the EDID EEPROM
data. Analysing the EDID will tell you what scan rates the TV
supports. FWIW, if you post your EDID here, I may be able to analyse
the data for you.

BTW, if you want someone to help you, it would help them if you would
indicate the TV's model number.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
 
Franc Zabkar wrote:
On Fri, 25 Jul 2008 00:00:03 GMT, jordo <notmy@email.address> put
finger to keyboard and composed:

I have a JVC rear projection tv that I bought second hand a little over a
year ago. It works fine except for the HDMI input. When I plug it into my
cable box and switch to the digital input, it can't detect anything (and
says it's gonna turn off in 9 minutes if nothing is connected before then
:)). However, if I plug in my computer via a dvi/hdmi cable, the tv still
doesn't detect a connection, but the computer recognizes the tv for the
model number that it is.

To recognise the TV, the computer only needs to be able to read the
TV's EDID EEPROM via the DDC pins in the cable (pins 6,7,14,15):

http://pinouts.ru/VideoCables/hdmi_dvi_cable_pinout.shtml

I have managed to read a powered-down monitor's EDID EEPROM using my
device programmer. I made a VGA DB15-to-DIP8 adapter cable and told
the programmer that it was connected to an Atmel AT24C21 serial EEPROM
which has a "DDC1/ DDC2 Interface Compliant for Monitor
Identification".

You can find the EDID in the registry at the following key:

HKEY_LOCAL_MACHINE\Enum\MONITOR

If you export that key to a .reg file, you will see the EDID EEPROM
data. Analysing the EDID will tell you what scan rates the TV
supports. FWIW, if you post your EDID here, I may be able to analyse
the data for you.

BTW, if you want someone to help you, it would help them if you would
indicate the TV's model number.

- Franc Zabkar
Thanks for the info, Franc. I'll hook up the computer again to the tv
Click to expand...
to get the registry info for you. The TV is a JVC AV8P575.
 
On Sun, 27 Jul 2008 00:55:44 GMT, jordo <notmy@email.address> put
finger to keyboard and composed:

I'll hook up the computer again to the tv
to get the registry info for you. The TV is a JVC AV8P575.
Click to expand...
Page 68 of the user manual ...

http://resources.jvc.com/Resources/00/00/95/YA091ien.pdf

.... states that ...

"The Digital-In [HDMI] terminal is not compatible with picture signals
of a personal computer."

I'd try a HDMI equipped DVD player.

In any case it still might be interesting to see what the EDID EEPROM
contains.

BTW, I believe your model is AV48P575, not AV8P575.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
 
Franc Zabkar wrote:
On Sun, 27 Jul 2008 00:55:44 GMT, jordo <notmy@email.address> put
finger to keyboard and composed:

I'll hook up the computer again to the tv
to get the registry info for you. The TV is a JVC AV8P575.

Page 68 of the user manual ...

http://resources.jvc.com/Resources/00/00/95/YA091ien.pdf

... states that ...

"The Digital-In [HDMI] terminal is not compatible with picture signals
of a personal computer."

I'd try a HDMI equipped DVD player.

In any case it still might be interesting to see what the EDID EEPROM
contains.

BTW, I believe your model is AV48P575, not AV8P575.

- Franc Zabkar
Hi Franc,
Click to expand...

Yes, my model is the 48" version. My keyboard is on the way out and
sometimes keys don't work..:)

I knew that it wasnt supposed to hook up via PC, but it was the only
other option I had. I have also tried to hook up my cable box, but no
success.
 
On Sun, 27 Jul 2008 11:29:13 +0000, jordo wrote:

Franc Zabkar wrote:
On Sun, 27 Jul 2008 00:55:44 GMT, jordo <notmy@email.address> put finger
to keyboard and composed:

I'll hook up the computer again to the tv to get the registry info for
you. The TV is a JVC AV8P575.

Page 68 of the user manual ...

http://resources.jvc.com/Resources/00/00/95/YA091ien.pdf

... states that ...

"The Digital-In [HDMI] terminal is not compatible with picture signals
of a personal computer."

I'd try a HDMI equipped DVD player.

In any case it still might be interesting to see what the EDID EEPROM
contains.

BTW, I believe your model is AV48P575, not AV8P575.

- Franc Zabkar
Hi Franc,

Yes, my model is the 48" version. My keyboard is on the way out and
sometimes keys don't work..:)

I knew that it wasnt supposed to hook up via PC, but it was the only other
option I had. I have also tried to hook up my cable box, but no success.
Click to expand...
What "cable box" and what operating system on the "cable box" ?
 
"Meat Plow" <meat@petitmorte.net> wrote in message
news:22eog9.llr.17.3@news.alt.net...
On Sun, 27 Jul 2008 11:29:13 +0000, jordo wrote:

Franc Zabkar wrote:
On Sun, 27 Jul 2008 00:55:44 GMT, jordo <notmy@email.address> put finger
to keyboard and composed:

I'll hook up the computer again to the tv to get the registry info for
you. The TV is a JVC AV8P575.

Page 68 of the user manual ...

http://resources.jvc.com/Resources/00/00/95/YA091ien.pdf

... states that ...

"The Digital-In [HDMI] terminal is not compatible with picture signals
of a personal computer."

I'd try a HDMI equipped DVD player.

In any case it still might be interesting to see what the EDID EEPROM
contains.

BTW, I believe your model is AV48P575, not AV8P575.

- Franc Zabkar
Hi Franc,

Yes, my model is the 48" version. My keyboard is on the way out and
sometimes keys don't work..:)

I knew that it wasnt supposed to hook up via PC, but it was the only
other
option I had. I have also tried to hook up my cable box, but no success.

What "cable box" and what operating system on the "cable box" ?
Click to expand...
More than likely a Scientific Atlanta running SARA you dumb sack of shit.
 
Meat Plow wrote:
On Sun, 27 Jul 2008 11:29:13 +0000, jordo wrote:

Franc Zabkar wrote:
On Sun, 27 Jul 2008 00:55:44 GMT, jordo <notmy@email.address> put finger
to keyboard and composed:

I'll hook up the computer again to the tv to get the registry info for
you. The TV is a JVC AV8P575.
Page 68 of the user manual ...

http://resources.jvc.com/Resources/00/00/95/YA091ien.pdf

... states that ...

"The Digital-In [HDMI] terminal is not compatible with picture signals
of a personal computer."

I'd try a HDMI equipped DVD player.

In any case it still might be interesting to see what the EDID EEPROM
contains.

BTW, I believe your model is AV48P575, not AV8P575.

- Franc Zabkar
Hi Franc,

Yes, my model is the 48" version. My keyboard is on the way out and
sometimes keys don't work..:)

I knew that it wasnt supposed to hook up via PC, but it was the only other
option I had. I have also tried to hook up my cable box, but no success.

What "cable box" and what operating system on the "cable box" ?


Eastlink HD box. Model number Motorola DCT6416 III
Click to expand...
 
On Sun, 27 Jul 2008 00:55:44 GMT, jordo <notmy@email.address> put
finger to keyboard and composed:

I'll hook up the computer again to the tv
to get the registry info for you.
Click to expand...
By way of example, here are the EDIDs for my LG 32LC7D TV:
http://www.users.on.net/~fzabkar/EDID/

The phoenix.exe utility analyses the EDID .dat files. Switch off
read-only mode for a better view of the data.

Phoenix.exe sometimes hangs on my Win98SE box. I don't know if this
problem occurs in other Windows versions.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
 
On Sun, 27 Jul 2008 17:10:36 GMT, jordo <notmy@email.address> wrote:

Meat Plow wrote:


Eastlink HD box. Model number Motorola DCT6416 III
Click to expand...
It's possible that the cable company has HDMI disabled for some
reason. It's also possible there is a HDCP compatibility problem
between the cable box and the TV. Even in my own home, I've had
several situations where a particular HDMI source just wouldn't work
with a certain display. HDCP is well known for having bugs.
Andy Cuffe

acuffe@gmail.com
 
Andy Cuffe wrote:
On Sun, 27 Jul 2008 17:10:36 GMT, jordo <notmy@email.address> wrote:

Meat Plow wrote:

Eastlink HD box. Model number Motorola DCT6416 III

It's possible that the cable company has HDMI disabled for some
reason. It's also possible there is a HDCP compatibility problem
between the cable box and the TV. Even in my own home, I've had
several situations where a particular HDMI source just wouldn't work
with a certain display. HDCP is well known for having bugs.
Andy Cuffe

acuffe@gmail.com
When the technician first came to hook up the box, he attempted to hook
Click to expand...
it up via HDMI and called back to the main place to make sure HDMI was
enabled on the box. When it wouldn't work, we just went with component
which worked right away...
 
Franc Zabkar wrote:
On Fri, 25 Jul 2008 00:00:03 GMT, jordo <notmy@email.address> put
finger to keyboard and composed:

I have a JVC rear projection tv that I bought second hand a little over a
year ago. It works fine except for the HDMI input. When I plug it into my
cable box and switch to the digital input, it can't detect anything (and
says it's gonna turn off in 9 minutes if nothing is connected before then
:)). However, if I plug in my computer via a dvi/hdmi cable, the tv still
doesn't detect a connection, but the computer recognizes the tv for the
model number that it is.

To recognise the TV, the computer only needs to be able to read the
TV's EDID EEPROM via the DDC pins in the cable (pins 6,7,14,15):

http://pinouts.ru/VideoCables/hdmi_dvi_cable_pinout.shtml

I have managed to read a powered-down monitor's EDID EEPROM using my
device programmer. I made a VGA DB15-to-DIP8 adapter cable and told
the programmer that it was connected to an Atmel AT24C21 serial EEPROM
which has a "DDC1/ DDC2 Interface Compliant for Monitor
Identification".

You can find the EDID in the registry at the following key:

HKEY_LOCAL_MACHINE\Enum\MONITOR

If you export that key to a .reg file, you will see the EDID EEPROM
data. Analysing the EDID will tell you what scan rates the TV
supports. FWIW, if you post your EDID here, I may be able to analyse
the data for you.

BTW, if you want someone to help you, it would help them if you would
indicate the TV's model number.

- Franc Zabkar
Hi again Franc,
Click to expand...

I don't have a registry key called Enum under HKLM...I'm using Vista,
btw...that probably would've helped, eh? :)
 
On Sun, 27 Jul 2008 23:29:55 GMT, jordo <notmy@email.address> wrote:

Franc Zabkar wrote:
On Fri, 25 Jul 2008 00:00:03 GMT, jordo <notmy@email.address> put
finger to keyboard and composed:

I have a JVC rear projection tv that I bought second hand a little over a
year ago. It works fine except for the HDMI input. When I plug it into my
cable box and switch to the digital input, it can't detect anything (and
says it's gonna turn off in 9 minutes if nothing is connected before then
:)). However, if I plug in my computer via a dvi/hdmi cable, the tv still
doesn't detect a connection, but the computer recognizes the tv for the
model number that it is.

To recognise the TV, the computer only needs to be able to read the
TV's EDID EEPROM via the DDC pins in the cable (pins 6,7,14,15):

http://pinouts.ru/VideoCables/hdmi_dvi_cable_pinout.shtml

I have managed to read a powered-down monitor's EDID EEPROM using my
device programmer. I made a VGA DB15-to-DIP8 adapter cable and told
the programmer that it was connected to an Atmel AT24C21 serial EEPROM
which has a "DDC1/ DDC2 Interface Compliant for Monitor
Identification".

You can find the EDID in the registry at the following key:

HKEY_LOCAL_MACHINE\Enum\MONITOR

If you export that key to a .reg file, you will see the EDID EEPROM
data. Analysing the EDID will tell you what scan rates the TV
supports. FWIW, if you post your EDID here, I may be able to analyse
the data for you.

BTW, if you want someone to help you, it would help them if you would
indicate the TV's model number.

- Franc Zabkar
Hi again Franc,

I don't have a registry key called Enum under HKLM...I'm using Vista,
btw...that probably would've helped, eh? :)
Click to expand...
I hope you are aware that JVC booby-traped the DVI modue in this set to avoid
tampering. If you remove the back without taking precautions say bye to your digital
input. See: http://www.iwaynet.net/~nesda/Jan04/Jan0413.html

Steve
 
Steve wrote:
On Sun, 27 Jul 2008 23:29:55 GMT, jordo <notmy@email.address> wrote:

Franc Zabkar wrote:
On Fri, 25 Jul 2008 00:00:03 GMT, jordo <notmy@email.address> put
finger to keyboard and composed:

I have a JVC rear projection tv that I bought second hand a little over a
year ago. It works fine except for the HDMI input. When I plug it into my
cable box and switch to the digital input, it can't detect anything (and
says it's gonna turn off in 9 minutes if nothing is connected before then
:)). However, if I plug in my computer via a dvi/hdmi cable, the tv still
doesn't detect a connection, but the computer recognizes the tv for the
model number that it is.
To recognise the TV, the computer only needs to be able to read the
TV's EDID EEPROM via the DDC pins in the cable (pins 6,7,14,15):

http://pinouts.ru/VideoCables/hdmi_dvi_cable_pinout.shtml

I have managed to read a powered-down monitor's EDID EEPROM using my
device programmer. I made a VGA DB15-to-DIP8 adapter cable and told
the programmer that it was connected to an Atmel AT24C21 serial EEPROM
which has a "DDC1/ DDC2 Interface Compliant for Monitor
Identification".

You can find the EDID in the registry at the following key:

HKEY_LOCAL_MACHINE\Enum\MONITOR

If you export that key to a .reg file, you will see the EDID EEPROM
data. Analysing the EDID will tell you what scan rates the TV
supports. FWIW, if you post your EDID here, I may be able to analyse
the data for you.

BTW, if you want someone to help you, it would help them if you would
indicate the TV's model number.

- Franc Zabkar
Hi again Franc,

I don't have a registry key called Enum under HKLM...I'm using Vista,
btw...that probably would've helped, eh? :)

I hope you are aware that JVC booby-traped the DVI modue in this set to avoid
tampering. If you remove the back without taking precautions say bye to your digital
input. See: http://www.iwaynet.net/~nesda/Jan04/Jan0413.html

Steve
Yeah, I've read that. I haven't taken the back off, but I bought it
Click to expand...
second-hand, so it could have been serviced in the past. However, there
is a way to reset the HDMI module from within the service menu (you do a
self-check, then turn off the tv from within the menu and unplug for 30
seconds, according to a few forums I've read). However, I don't know
how to get into this service menu.
 
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