[TechAssist] Re: Zenith PIP Theory
- From: "Ron Miller d.b.a. Country TV" <rlmbkm@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 4 Apr 2004 11:57:59 -0500
I have seen and fixed that problem on two of that model,the fix was scrape
all "gripleits"(spelling) and "feather back" there trace and resolder.That
pcb uses a lot of point to point jumper wires, do all the grippleits even
the one on the FBT.HTH
Country TV
Ron Miller
Inez, TX. 77968
----- Original Message -----
From: <HSWAD@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, April 04, 2004 11:04 AM
Subject: [TechAssist] Re: Zenith PIP Theory
> I should have mentioned that this set did have a main picture with
everything
> set the way it is now. It just dissappeared leaving only the PIP picture
> available. Hollis Bates, Field Engineer-retired, Lewiston, Maine.
HSWAD@xxxxxxxx
> In a
message
> dated 4/4/04 10:48:19 AM Eastern Daylight Time, oliver_peter1@xxxxxxxxxxx
> writes:
> The only thing that comes to mind is that some of these sets will show
thru
> OSD items but not a picture if the customer control menu settings for
> brightness and picture are set too low, but only have seen that where I've
> had to repair the CRT drive circuitry when the customer turned them down
all
> the way because it was too bright.
> Peter Oliver
> Tucson Radio TV
>
>
> From: HSWAD@xxxxxxx
> Reply-To: techassist@xxxxxxxxxxxxx
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Zenith PIP Theory
> Date: Sat, 3 Apr 2004 19:32:23 EST
>
> Does anyone have a training manual that explains the theory behind
Zenith's
> PIP sysytem used in the Model SL3585BT TV. I have one that has a pip but
no
> main picture. The IF, PIP modules have been replaced. Also IC U2900, all
the
> caps
> in the SMPS have been changed. I am trying to repair this at no cost to a
> school. Any help would be appreciated. I can download just about anything
> you
> care to send me and anyway you want to send it. Any help will get you the
> thanks
> of a nice bunch of school kids.
>
> Hollis Bates,Field Engineer-retired, Lewiston, Maine,HSWAD@xxxxxxx
>
>
>
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