Zenith Z56Z95 RPTV picture is red

I sold my TV to my neighbor a month or so ago & the picture was fine,
but I was over & now the pic has a reddish cast to it.
I'll get it fixed eventually (the tank of the toilet on my second
floor cracked & flooded all 3 floors), but I was wondering about what
cost I'm looking at & what could possibly be wrong. Any advice would
be appreciated.

Did the flood affect the TV or was that just non-information you
provided about the toilet??

H. R. Hofmann

On 10 Oct 2005 18:28:00 -0700, (E-Mail Removed) wrote:

>Did the flood affect the TV or was that just non-information you
>provided about the toilet??
>
>H. R. Hofmann
Sorry, just needless info about why I have to wait to fix it.

Find the red screen control and try turning it down a bit, That should
remove the reddish cast. Then, the questions is is the set stable, or
does it continue tio get red with time. You can fix the other stuff
while you are waiting to see if turning the red screen down is
permanent or not.

Bob Hofmann

On 11 Oct 2005 06:07:23 -0700, (E-Mail Removed) wrote:

>Find the red screen control and try turning it down a bit, That should
>remove the reddish cast. Then, the questions is is the set stable, or
>does it continue tio get red with time. You can fix the other stuff
>while you are waiting to see if turning the red screen down is
>permanent or not.
>
>Bob Hofmann

Thanks. What do you mean by red screen control? Is this in the
service menu or something on a circuit board? I'm not a tech, but I
can get into the service menu.
Could it be not too much red, but maybe too little of another colour?
The menus appear greenish when they should be yellow. I'm not sure
what colours would make up yellow.

Chris

"Chris" bravely wrote to "All" (11 Oct 05 21:01:24)
--- on the heady topic of "Re: Zenith Z56Z95 RPTV picture is red"

Ch> From: Chris <(E-Mail Removed)>
Ch> Xref: core-easynews sci.electronics.repair:344852

Ch> On 11 Oct 2005 06:07:23 -0700, (E-Mail Removed) wrote:

>Find the red screen control and try turning it down a bit, That should
>remove the reddish cast. Then, the questions is is the set stable, or
>does it continue tio get red with time. You can fix the other stuff
>while you are waiting to see if turning the red screen down is
>permanent or not.
>
>Bob Hofmann

Ch> Thanks. What do you mean by red screen control? Is this in the
Ch> service menu or something on a circuit board? I'm not a tech, but I
Ch> can get into the service menu.
Ch> Could it be not too much red, but maybe too little of another colour?
Ch> The menus appear greenish when they should be yellow. I'm not sure
Ch> what colours would make up yellow.

Ch> Chris


Green and red makes yellow on a CRT. If what should be yellow is
greenish means it lacks red. On nearly saturated colours it means the
red drive is insufficient. However, the red cast symptom means the red
threshold or bias voltage is off. The 2 symptoms might be related, for
example if the red driver is faulty. Then the red bias is upset and
the red drive or gain might be too low, both together. But it might be
something completely different like a shorted red gun.

A*s*i*m*o*v

.... You may be a tech if you're entertained by a 6-pack and sparking HV.

Find a dumpster and throw it in. A bad CRT (picture tube) is very likely in
these things. Sorry.
"Asimov" <Asimov@-removethis-bbs.juxtaposition.dynip.com> wrote in message
news:MSGID_1=3a167=(E-Mail Removed)...
> "Chris" bravely wrote to "All" (11 Oct 05 21:01:24)
> --- on the heady topic of "Re: Zenith Z56Z95 RPTV picture is red"
>
> Ch> From: Chris <(E-Mail Removed)>
> Ch> Xref: core-easynews sci.electronics.repair:344852
>
> Ch> On 11 Oct 2005 06:07:23 -0700, (E-Mail Removed) wrote:
>
> >Find the red screen control and try turning it down a bit, That should
> >remove the reddish cast. Then, the questions is is the set stable, or
> >does it continue tio get red with time. You can fix the other stuff
> >while you are waiting to see if turning the red screen down is
> >permanent or not.
> >
> >Bob Hofmann
>
> Ch> Thanks. What do you mean by red screen control? Is this in the
> Ch> service menu or something on a circuit board? I'm not a tech, but I
> Ch> can get into the service menu.
> Ch> Could it be not too much red, but maybe too little of another colour?
> Ch> The menus appear greenish when they should be yellow. I'm not sure
> Ch> what colours would make up yellow.
>
> Ch> Chris
>
>
> Green and red makes yellow on a CRT. If what should be yellow is
> greenish means it lacks red. On nearly saturated colours it means the
> red drive is insufficient. However, the red cast symptom means the red
> threshold or bias voltage is off. The 2 symptoms might be related, for
> example if the red driver is faulty. Then the red bias is upset and
> the red drive or gain might be too low, both together. But it might be
> something completely different like a shorted red gun.
>
> A*s*i*m*o*v
>
> ... You may be a tech if you're entertained by a 6-pack and sparking HV.
>