Red screen output from Humax 9150

For some reason this thread reminded me of the red sky at night proverb. So
is it red both morning and evening?

Brian

--
From the Sofa of Brian Gaff Reply address is active
"Robin" wrote in message
...
Turned on TV - fine; went to Humax - completely red screen.

Is the screen red whether set to RGB, CVBS pr S-Video or just on some?

PS
I'm a 9200T user so if the 9150 don't do all those I'll accept a
bollocking.


--
Robin
reply to address is (meant to be) valid

On 22/10/2013 20:03, Dickie mint wrote:
Here's a weird one, reported on another forum.

"After my recently fried PC I thought I should maybe try and protect the
TV set-up so bought one of these
http://www.amazon.co.uk/Surge-Protec...uctDescription


Set it up today with coax going into socket and from there to Humax,
then Humax power plug into socket.

Turned on TV - fine; went to Humax - completely red screen.

Tried selection and playing, all red so useless.

Restored to original routing - back to normal."

The menu is seen, and it's not a loose SCART.

Any ideas?

Richard
I have put the various suggestions to the OP and await her reply.

She seems to be saying that connecting the aerial through this gizmo
produces a red screen from the Humax. It's not a wind up, the poster is
pukka!

The aerial getting earthed upsetting the Humax seems unlikely, but the
gizmo putting out some volts???!! Need to know what's in the box!

Richard

"Graham." wrote in message
...
On Tue, 22 Oct 2013 20:35:11 +0100, Dickie mint
wrote:

On 22/10/2013 20:15, Bill Wright wrote:

Incorrect fault reporting.


Bill, We've been batting on a while with suggestions and the OP has
repeated the operation many times!

Richard

Don't disregard the possibility that he is having you on.

Let's be kind and assume he is on the level,

Let's see.

Something to do with the Type II Humex floating chassis becoming
earthed via the co-ax screen on the so-called surge protector.

Does it actually earth the co-ax? I can think of one or two possible
problems if you did that!

Probably worth breaking out the DMM on Ohms range and checking, if its only
through a MOV the resistance should be so high as to read infinity on a
typical DMM.

Dickie mint wrote:
On 22/10/2013 20:03, Dickie mint wrote:
Here's a weird one, reported on another forum.

"After my recently fried PC I thought I should maybe try and protect
the TV set-up so bought one of these
http://www.amazon.co.uk/Surge-Protec...uctDescription


Set it up today with coax going into socket and from there to Humax,
then Humax power plug into socket.

Turned on TV - fine; went to Humax - completely red screen.

Tried selection and playing, all red so useless.

Restored to original routing - back to normal."

The menu is seen, and it's not a loose SCART.

Any ideas?

Richard
I have put the various suggestions to the OP and await her reply.

She seems to be saying that connecting the aerial through this gizmo
produces a red screen from the Humax. It's not a wind up, the poster
is pukka!

The aerial getting earthed upsetting the Humax seems unlikely, but the
gizmo putting out some volts???!! Need to know what's in the box!

It's obviously doing it's job! It's filtering out all those flighty blue
and green electrons and just letting the sluggish red ones through. ;-)

Tim

Richard

On 23/10/2013 14:19, Dickie mint wrote:
On 22/10/2013 20:03, Dickie mint wrote:
Here's a weird one, reported on another forum.

"After my recently fried PC I thought I should maybe try and protect the
TV set-up so bought one of these
http://www.amazon.co.uk/Surge-Protec...uctDescription



Set it up today with coax going into socket and from there to Humax,
then Humax power plug into socket.

Turned on TV - fine; went to Humax - completely red screen.

Tried selection and playing, all red so useless.

Restored to original routing - back to normal."

The menu is seen, and it's not a loose SCART.

Any ideas?

Richard
I have put the various suggestions to the OP and await her reply.

She seems to be saying that connecting the aerial through this gizmo
produces a red screen from the Humax. It's not a wind up, the poster is
pukka!

The aerial getting earthed upsetting the Humax seems unlikely, but the
gizmo putting out some volts???!! Need to know what's in the box!

Richard


She's given up. Totally non technical and has no nerdy
friends/relatives/neighbours! She popped into the local TV shop who
told her the gizmo was distorting the signal. Doh!
So she's returned to her directly connected aerial and abandoned the gizmo.

Richard

"Dickie mint" wrote in message
...
On 22/10/2013 20:03, Dickie mint wrote:
Here's a weird one, reported on another forum.

"After my recently fried PC I thought I should maybe try and protect the
TV set-up so bought one of these
http://www.amazon.co.uk/Surge-Protec...uctDescription


Set it up today with coax going into socket and from there to Humax,
then Humax power plug into socket.

Turned on TV - fine; went to Humax - completely red screen.

Tried selection and playing, all red so useless.

Restored to original routing - back to normal."

The menu is seen, and it's not a loose SCART.

Any ideas?

Richard
I have put the various suggestions to the OP and await her reply.

She seems to be saying that connecting the aerial through this gizmo
produces a red screen from the Humax. It's not a wind up, the poster is
pukka!

The aerial getting earthed upsetting the Humax seems unlikely, but the
gizmo putting out some volts???!! Need to know what's in the box!

Unless its altogether fake in the first place - it should contain a few
Metal Oxide Varistors, these are non-linear resistors that have very high
resistance as long as the voltage applied remains below a specified level,
if the voltage rating is exceeded the resistance drops to a low value and
clamps the surge.

The 13A socket bit should have 3 MOVs connected together in a triangle, with
the 3 points connected to L,N & E.

I'd be wary of it if it earther the co-ax directly - there should be 2 more
MOVs covering the co-ax inner & outer.

IMO the fault is highly unlikely to be caused by the 13A socket MOVs alone -
try it without the co-ax feed through.

I stand by the suggestion to use a really cheap sacrificial aerial amp -
with anything less than a direct hit - that should be the only victim.

Even if the aerial shared its bracket with a lightening conductor (which
would make a direct hit even more likely!) - its thousands of Amps with a
very fast risetime, parasitic inductance would guarantee a very substantial
instantaneous voltage spike - if the protector directly earths the co-ax
outer, that gets fed straight into your ring main!

On Wed, 23 Oct 2013 17:41:19 +0100, "Ian Field"
wrote:



"Graham." wrote in message
.. .
On Tue, 22 Oct 2013 20:35:11 +0100, Dickie mint
wrote:

On 22/10/2013 20:15, Bill Wright wrote:

Incorrect fault reporting.


Bill, We've been batting on a while with suggestions and the OP has
repeated the operation many times!

Richard

Don't disregard the possibility that he is having you on.

Let's be kind and assume he is on the level,

Let's see.

Something to do with the Type II Humex floating chassis becoming
earthed via the co-ax screen on the so-called surge protector.

Does it actually earth the co-ax? I can think of one or two possible
problems if you did that!

Probably worth breaking out the DMM on Ohms range and checking, if its only
through a MOV the resistance should be so high as to read infinity on a
typical DMM.


Communal aerial outlet plates will typically be earthed. Also you only
need one earthed device in your set-up to effectively earth the lot
via the interconnecting cables. I can think of some "Class I" set top
boxes; the original Amstrad Sky Digital box DRX200, and a slim Sony
one of similar vintage IITC.

I would guess the MOVs are wired L-E N-E & L-N as for the Belling
Lee's perhaps there is one on each between inner and outer (For the
good they will do. Personally I would chuck it in the bin)

--
Graham.

%Profound_observation%

On Wed, 23 Oct 2013 18:00:13 +0100, "Ian Field"
wrote:



"Dickie mint" wrote in message
...
On 22/10/2013 20:03, Dickie mint wrote:
Here's a weird one, reported on another forum.

"After my recently fried PC I thought I should maybe try and protect the
TV set-up so bought one of these
http://www.amazon.co.uk/Surge-Protec...uctDescription


Set it up today with coax going into socket and from there to Humax,
then Humax power plug into socket.

Turned on TV - fine; went to Humax - completely red screen.

Tried selection and playing, all red so useless.

Restored to original routing - back to normal."

The menu is seen, and it's not a loose SCART.

Any ideas?

Richard
I have put the various suggestions to the OP and await her reply.

She seems to be saying that connecting the aerial through this gizmo
produces a red screen from the Humax. It's not a wind up, the poster is
pukka!

The aerial getting earthed upsetting the Humax seems unlikely, but the
gizmo putting out some volts???!! Need to know what's in the box!

Unless its altogether fake in the first place - it should contain a few
Metal Oxide Varistors, these are non-linear resistors that have very high
resistance as long as the voltage applied remains below a specified level,
if the voltage rating is exceeded the resistance drops to a low value and
clamps the surge.

The 13A socket bit should have 3 MOVs connected together in a triangle, with
the 3 points connected to L,N & E.

I'd be wary of it if it earther the co-ax directly - there should be 2 more
MOVs covering the co-ax inner & outer.

IMO the fault is highly unlikely to be caused by the 13A socket MOVs alone -
try it without the co-ax feed through.

I stand by the suggestion to use a really cheap sacrificial aerial amp -
with anything less than a direct hit - that should be the only victim.

Even if the aerial shared its bracket with a lightening conductor (which
would make a direct hit even more likely!) - its thousands of Amps with a
very fast risetime, parasitic inductance would guarantee a very substantial
instantaneous voltage spike - if the protector directly earths the co-ax
outer, that gets fed straight into your ring main!


Enough talk of you know what, lest we summon up w_You w_Know w_Who.

--
Graham.

%Profound_observation%

"Graham." wrote in message
...
On Wed, 23 Oct 2013 17:41:19 +0100, "Ian Field"
wrote:



"Graham." wrote in message
. ..
On Tue, 22 Oct 2013 20:35:11 +0100, Dickie mint
wrote:

On 22/10/2013 20:15, Bill Wright wrote:

Incorrect fault reporting.


Bill, We've been batting on a while with suggestions and the OP has
repeated the operation many times!

Richard

Don't disregard the possibility that he is having you on.

Let's be kind and assume he is on the level,

Let's see.

Something to do with the Type II Humex floating chassis becoming
earthed via the co-ax screen on the so-called surge protector.

Does it actually earth the co-ax? I can think of one or two possible
problems if you did that!

Probably worth breaking out the DMM on Ohms range and checking, if its
only
through a MOV the resistance should be so high as to read infinity on a
typical DMM.


Communal aerial outlet plates will typically be earthed.

Typically they're a bloody great metal box on the end wall of the block and
because the UHF amp requires a mains PSU, they can't be left floating.

En el artículo , Ian Field gangprobing.
escribió:

Note the item pictured in the link has a warning light that indicates when
the unit needs to be replaced - every time an MOV clamps a surge event; it
degrades a little - eventually the MOV cracks or shatters and no longer does
anything useful.

Like this, you mean?

http://jasper.org.uk/pics/Boom.jpg

The strips had a "surge protection operational" green light, the upper
of the two neons you can see in each strip. It still illuminated after
the MOVs had self-destructed. Hmm.

--
(\_/)
(='.'=)
(")_(")