Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Posts: 45
Default Problem with HDMI connection.

I am connecting my PC to my TV to use as second monitor using a hdmi
cable/connection.
The TV has 4 hdmi ports, however after a while one of them stopped working
properly, ie
I got 'noise' on the screen, a bit like lines of 'glitter' across the
screen.

Anyway I switched to a second port and that seemed to work fine....for a
while, then
that too developed the same kind of problem.

Anyway I try a third port and that works fine. However I am getting worried
now because
I have only had the TV about 3 months and the ports seem to only last a
about a month
and a half.

I connect a cable to the port almost every day and disconnect it after, so
the port
sees a lot of 'action' and I am wondering if I have damaged it.
It seems a delicate connection consideing the size and weight of the cable,
the metal
contacts/threads look about a millimetre of less wide, easy to damage I
would imagine.

Anyway I have a look at the ports and they appear fine as far as I can see
(not very
easy to see in though!!), however I notice on the cable one of the pins
appears to be
short.

According to this image it is a +5 volt pin
http://www.h-online.com/open/imgs/45...2cf765c641.jpg

However also note on the image the same pin seems to be short, as it does
he-
http://www.blogcdn.com/hd.engadget.c...cking-hdmi.jpg

So I expect it is not needed.

Actually that is disappointing as it appears to rule out a fault with the
cable, which
is easier to resolve.

It woudl be handy if you could have a look at your cables and tell me if
they all have this
'feature' (I only have one cable).

It does however make sense it is not the cable, because othersewise it would
not work
in any socket, and it works in the two I have very rarely used.


It is this TV by the way:-
http://www.comet.co.uk/shopcomet/pro...TACHI-L32VP03U

Maybe that is why it was so relatively cheap?

It will be a real pain if I have to return it, however it looks like I will,
should be
no problem as it's only 3 months old.

Also I expect a lot of other TV's will have the same problem as HDMI has a
lot of delicate
connections going to it.

It also has a VGA connector so maybe I should get a VGA cable instead?

Or I have been thinking of getting a short male to female connector and
leaving it in
the socket so it experience less stress.

Any thought? Anyone had similar problems?




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Posts: 45
Default Problem with HDMI connection.


"Colin Trunt" wrote in message
...
I am connecting my PC to my TV to use as second monitor using a hdmi
cable/connection.
The TV has 4 hdmi ports, however after a while one of them stopped working
properly, ie
I got 'noise' on the screen, a bit like lines of 'glitter' across the
screen.

Anyway I switched to a second port and that seemed to work fine....for a
while, then
that too developed the same kind of problem.

Anyway I try a third port and that works fine. However I am getting
worried now because
I have only had the TV about 3 months and the ports seem to only last a
about a month
and a half.

I connect a cable to the port almost every day and disconnect it after, so
the port
sees a lot of 'action' and I am wondering if I have damaged it.
It seems a delicate connection consideing the size and weight of the
cable, the metal
contacts/threads look about a millimetre of less wide, easy to damage I
would imagine.

Anyway I have a look at the ports and they appear fine as far as I can see
(not very
easy to see in though!!), however I notice on the cable one of the pins
appears to be
short.

According to this image it is a +5 volt pin
http://www.h-online.com/open/imgs/45...2cf765c641.jpg

However also note on the image the same pin seems to be short, as it does
he-
http://www.blogcdn.com/hd.engadget.c...cking-hdmi.jpg

So I expect it is not needed.

Actually that is disappointing as it appears to rule out a fault with the
cable, which
is easier to resolve.

It woudl be handy if you could have a look at your cables and tell me if
they all have this
'feature' (I only have one cable).

It does however make sense it is not the cable, because othersewise it
would not work
in any socket, and it works in the two I have very rarely used.


It is this TV by the way:-
http://www.comet.co.uk/shopcomet/pro...TACHI-L32VP03U

Maybe that is why it was so relatively cheap?

It will be a real pain if I have to return it, however it looks like I
will, should be
no problem as it's only 3 months old.

Also I expect a lot of other TV's will have the same problem as HDMI has a
lot of delicate
connections going to it.

It also has a VGA connector so maybe I should get a VGA cable instead?

Or I have been thinking of getting a short male to female connector and
leaving it in
the socket so it experience less stress.

Any thought? Anyone had similar problems?



OK I tried connecting again and the TV died, no picture, an led light works
and some of the buttons make noises but black screen and it won't rspond
to the remote.

Back for a refund!!

DO you guys switch off TV and PC when connecting by HDMI?





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Default Problem with HDMI connection.


"Colin Trunt" wrote in message
...
I am connecting my PC to my TV to use as second monitor using a hdmi
cable/connection.
The TV has 4 hdmi ports, however after a while one of them stopped working
properly, ie
I got 'noise' on the screen, a bit like lines of 'glitter' across the
screen.

Anyway I switched to a second port and that seemed to work fine....for a
while, then
that too developed the same kind of problem.

Anyway I try a third port and that works fine. However I am getting
worried now because
I have only had the TV about 3 months and the ports seem to only last a
about a month
and a half.

I connect a cable to the port almost every day and disconnect it after, so
the port
sees a lot of 'action' and I am wondering if I have damaged it.
It seems a delicate connection consideing the size and weight of the
cable, the metal
contacts/threads look about a millimetre of less wide, easy to damage I
would imagine.

Anyway I have a look at the ports and they appear fine as far as I can see
(not very
easy to see in though!!), however I notice on the cable one of the pins
appears to be
short.

According to this image it is a +5 volt pin
http://www.h-online.com/open/imgs/45...2cf765c641.jpg

However also note on the image the same pin seems to be short, as it does
he-
http://www.blogcdn.com/hd.engadget.c...cking-hdmi.jpg

So I expect it is not needed.

Actually that is disappointing as it appears to rule out a fault with the
cable, which
is easier to resolve.

It woudl be handy if you could have a look at your cables and tell me if
they all have this
'feature' (I only have one cable).

It does however make sense it is not the cable, because othersewise it
would not work
in any socket, and it works in the two I have very rarely used.


It is this TV by the way:-
http://www.comet.co.uk/shopcomet/pro...TACHI-L32VP03U

Maybe that is why it was so relatively cheap?

It will be a real pain if I have to return it, however it looks like I
will, should be
no problem as it's only 3 months old.

Also I expect a lot of other TV's will have the same problem as HDMI has a
lot of delicate
connections going to it.

It also has a VGA connector so maybe I should get a VGA cable instead?

Or I have been thinking of getting a short male to female connector and
leaving it in
the socket so it experience less stress.

Any thought? Anyone had similar problems?



Boy oh boy ... Just consider what an HDMI port is actually intended for,
and then stop to consider whether it's likely to be designed for repeated
plugging / deplugging. As far as hot connecting goes, no, you shouldn't
really. A short 5v pin ensures that as the cable is inserted, all other pins
connect first. If you really must keep disconnecting from the TV, you would
probably do better to go for the VGA socket, which is more robust than an
HDMI connector, and should be able to accept the same resolution as you are
shoving up the HDMI. That's probably not the resolution that you're actually
seeing anyway as, unless the TV has a full HD panel - which it probably
hasn't if you say it was cheap - the image will be being scaled to match the
panel's (low) resolution.

Even using the VGA socket may not result in a much longer life. You are
talking heavy cables here, and (normally) printed circuit mounting
connectors, often these days with surface mount pins. Add that to the fact
that the set will be built with lead-free solder, and repeated flexing of
the joints from repeated connecting / deconnecting, is sure to lead to early
demise, as you have found to your cost. A sacrificial extension cable, or
HDMI splitter box is, I feel, the only way that you are going to protect any
TV from damage caused by what you're trying to do.

Arfa


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Posted to sci.electronics.repair
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Posts: 45
Default Problem with HDMI connection.


"Arfa Daily" wrote in message
...

"Colin Trunt" wrote in message
...
I am connecting my PC to my TV to use as second monitor using a hdmi
cable/connection.
The TV has 4 hdmi ports, however after a while one of them stopped
working properly, ie
I got 'noise' on the screen, a bit like lines of 'glitter' across the
screen.

Anyway I switched to a second port and that seemed to work fine....for a
while, then
that too developed the same kind of problem.

Anyway I try a third port and that works fine. However I am getting
worried now because
I have only had the TV about 3 months and the ports seem to only last a
about a month
and a half.

I connect a cable to the port almost every day and disconnect it after,
so the port
sees a lot of 'action' and I am wondering if I have damaged it.
It seems a delicate connection consideing the size and weight of the
cable, the metal
contacts/threads look about a millimetre of less wide, easy to damage I
would imagine.

Anyway I have a look at the ports and they appear fine as far as I can
see (not very
easy to see in though!!), however I notice on the cable one of the pins
appears to be
short.

According to this image it is a +5 volt pin
http://www.h-online.com/open/imgs/45...2cf765c641.jpg

However also note on the image the same pin seems to be short, as it does
he-
http://www.blogcdn.com/hd.engadget.c...cking-hdmi.jpg

So I expect it is not needed.

Actually that is disappointing as it appears to rule out a fault with the
cable, which
is easier to resolve.

It woudl be handy if you could have a look at your cables and tell me if
they all have this
'feature' (I only have one cable).

It does however make sense it is not the cable, because othersewise it
would not work
in any socket, and it works in the two I have very rarely used.


It is this TV by the way:-
http://www.comet.co.uk/shopcomet/pro...TACHI-L32VP03U

Maybe that is why it was so relatively cheap?

It will be a real pain if I have to return it, however it looks like I
will, should be
no problem as it's only 3 months old.

Also I expect a lot of other TV's will have the same problem as HDMI has
a lot of delicate
connections going to it.

It also has a VGA connector so maybe I should get a VGA cable instead?

Or I have been thinking of getting a short male to female connector and
leaving it in
the socket so it experience less stress.

Any thought? Anyone had similar problems?



Boy oh boy ... Just consider what an HDMI port is actually intended for,
and then stop to consider whether it's likely to be designed for repeated
plugging / deplugging. As far as hot connecting goes, no, you shouldn't
really. A short 5v pin ensures that as the cable is inserted, all other
pins connect first. If you really must keep disconnecting from the TV, you
would probably do better to go for the VGA socket, which is more robust
than an HDMI connector, and should be able to accept the same resolution
as you are shoving up the HDMI. That's probably not the resolution that
you're actually seeing anyway as, unless the TV has a full HD panel -
which it probably hasn't if you say it was cheap - the image will be being
scaled to match the panel's (low) resolution.

Even using the VGA socket may not result in a much longer life. You are
talking heavy cables here, and (normally) printed circuit mounting
connectors, often these days with surface mount pins. Add that to the fact
that the set will be built with lead-free solder, and repeated flexing of
the joints from repeated connecting / deconnecting, is sure to lead to
early demise, as you have found to your cost. A sacrificial extension
cable, or HDMI splitter box is, I feel, the only way that you are going to
protect any TV from damage caused by what you're trying to do.

Arfa



Thanks for that.
I agree about the socket being delicate.
Anyway I always plugged in with the TV on.
Lets face it you have to turn on the TV or the Computer first so which one?
Also if it is plugged in when the TV is switched on the short 5v pin makes
no
different hence that indicates it is intended to be hot plugged.

It is full 1080 hd, cheap for the price and spec.

Obviously what I am intending to do is connect my PC to the TV via
the HDMI port, I mean thats what it is intended for!

As I said the TV is now kapput, screen is alway black it went when I was
hot plugging the
HDMI, I though for a while the PC was also f*cked, but luckilly it was not
but
I had to fiddle with the video card to get it to boot as I occasionally have
to
it is not help in it slot very well and can move a bit.

Thanks.


  #5   Report Post  
Posted to sci.electronics.repair
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Posts: 6
Default Problem with HDMI connection.

"Colin Trunt" wrote in
:

"Arfa Daily" wrote in message
...

"Colin Trunt" wrote in message
...
I am connecting my PC to my TV to use as second monitor using a hdmi
cable/connection.
The TV has 4 hdmi ports, however after a while one of them stopped
working properly, ie
I got 'noise' on the screen, a bit like lines of 'glitter' across
the screen.

Anyway I switched to a second port and that seemed to work
fine....for a while, then
that too developed the same kind of problem.

Anyway I try a third port and that works fine. However I am getting
worried now because
I have only had the TV about 3 months and the ports seem to only
last a about a month
and a half.

I connect a cable to the port almost every day and disconnect it
after, so the port
sees a lot of 'action' and I am wondering if I have damaged it.
It seems a delicate connection consideing the size and weight of the
cable, the metal
contacts/threads look about a millimetre of less wide, easy to
damage I would imagine.

Anyway I have a look at the ports and they appear fine as far as I
can see (not very
easy to see in though!!), however I notice on the cable one of the
pins appears to be
short.

According to this image it is a +5 volt pin
http://www.h-online.com/open/imgs/45...2cf765c641.jpg

However also note on the image the same pin seems to be short, as it
does he-
http://www.blogcdn.com/hd.engadget.c...14-08-locking-
hdmi.jpg

So I expect it is not needed.

Actually that is disappointing as it appears to rule out a fault
with the cable, which
is easier to resolve.

It woudl be handy if you could have a look at your cables and tell
me if they all have this
'feature' (I only have one cable).

It does however make sense it is not the cable, because othersewise
it would not work
in any socket, and it works in the two I have very rarely used.


It is this TV by the way:-
http://www.comet.co.uk/shopcomet/pro...TACHI-L32VP03U

Maybe that is why it was so relatively cheap?

It will be a real pain if I have to return it, however it looks like
I will, should be
no problem as it's only 3 months old.

Also I expect a lot of other TV's will have the same problem as HDMI
has a lot of delicate
connections going to it.

It also has a VGA connector so maybe I should get a VGA cable
instead?

Or I have been thinking of getting a short male to female connector
and leaving it in
the socket so it experience less stress.

Any thought? Anyone had similar problems?



Boy oh boy ... Just consider what an HDMI port is actually intended
for, and then stop to consider whether it's likely to be designed for
repeated plugging / deplugging. As far as hot connecting goes, no,
you shouldn't really. A short 5v pin ensures that as the cable is
inserted, all other pins connect first. If you really must keep
disconnecting from the TV, you would probably do better to go for the
VGA socket, which is more robust than an HDMI connector, and should
be able to accept the same resolution as you are shoving up the HDMI.
That's probably not the resolution that you're actually seeing anyway
as, unless the TV has a full HD panel - which it probably hasn't if
you say it was cheap - the image will be being scaled to match the
panel's (low) resolution.

Even using the VGA socket may not result in a much longer life. You
are talking heavy cables here, and (normally) printed circuit
mounting connectors, often these days with surface mount pins. Add
that to the fact that the set will be built with lead-free solder,
and repeated flexing of the joints from repeated connecting /
deconnecting, is sure to lead to early demise, as you have found to
your cost. A sacrificial extension cable, or HDMI splitter box is, I
feel, the only way that you are going to protect any TV from damage
caused by what you're trying to do.

Arfa



Thanks for that.
I agree about the socket being delicate.
Anyway I always plugged in with the TV on.
Lets face it you have to turn on the TV or the Computer first so which
one? Also if it is plugged in when the TV is switched on the short 5v
pin makes no
different hence that indicates it is intended to be hot plugged.

I had to fiddle with the video card to get it to boot as I
occasionally have to
it is not help in it slot very well and can move a bit.

Thanks.




I think you should take a little time to ensure that your PC graphics
card is fitting correctly and is firm in the slot (Power Off first
because these cards use a lot of power and it's possible, with a loose
card, to short that power through the data pins which does irreversible
damage to both.

--
Just add a little Rub to email me :^)
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