[TechAssist] Re: Zenith Z52Z95D 9-1674 no video, red crt blurry/smeared convergence issues; 1/2 fixed
- From: "Avery Boyd" <adBoyd@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 24 Jun 2005 16:46:09 -0500
look on the daughter board of the 9-1674. At THE VERY TOP IS the filament
connections resolder them Avery.
Avery Boyd
4666B S. Mingo
Tulsa OK 74146
Phone 918-665-2400
----- Original Message -----
From: "Larry E" <videotech@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, June 24, 2005 4:44 PM
Subject: [TechAssist] Re: Zenith Z52Z95D 9-1674 no video, red crt
blurry/smeared convergence issues; 1/2 fixed
Hi Guys, went out and replaced all 3 of the 120K resistors (R5102`s) on the
3 crt boards and got
back the red, no more green bleed around the letters at the bottom of CNN,
and the horizontal
blue and red convergence bar is back (never lost the vertical), BUT I still
lose the video after 25 minutes
of running perfectly, actually I found out today that the filaments are
going out, hence no video, so it looks like
I have a high voltage issue?? This is a rebuilt module so it seems strange
that both 9-1674`s would have the
same problem, after the set loses the filaments the set can immediately be
turned off and right back on and the
set will run again with perfect sound and picture, I checked the 2 pin plug
that sits in front of the daughter board
and it is NOT 47-52K it reads 55.6K is this far enough off to possible
indicate a bad splitter? Seems strange that
the set can be turned off & immediately back on and the picture comes right
up if the splitter was bad, any ideas
would be appreciated, Larry E
Larry Eastman
American TV & Electronics
Crystal River, Fl. 34428
----- Original Message -----
From: "Larry E" <videotech@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, June 23, 2005 12:50 PM
Subject: [TechAssist] Zenith Z52Z95D 9-1674 no video, red crt blurry/smeared
convergence issues
> Hi Guys, This Z52Z95D has the 9-1674 sweep and 9-1690 converg boards,
complaint was no video has sound,
> replaced the 9-1674 module, set came up fine, but video was not good, when
the weather channel, CNN, etc.
> puts up letters there is a green haze around the letters, put up the
customers cross hatch and the red & blue
> horizontal is missing (from top of screen to bottom) the green is there,
all 3 colors are there vertically(left to right)
> pulled R3243 behind the horiz. heatsink the 110K and R3244 the 82K as this
is a known failure for the horiz.
> convergence bars missing, they are both good out of circuit, looked into
the lenses and the red video is smeared/
> washed out looking, this does not show up on the screen?? sprayed R5102
with freeze mist and red crt went blank,
> sprayed same resistor on green crt board and green blanked out, I did not
have 110K 1/2 watts with me so couldn`t
> change them, before I could go out there today and replace them the
customer called and said the set has
> again failed with same problem, no video has sound, he shuts off set for
1/2 hour and set runs normally for 45 minutes
> then loses video again. This is the third time in 1 month that I have had
similiar symptoms with the 1674/1690
> combination of boards, convergence goes out, replace the 1690, set runs 24
hours and convergence fails again,
> or no video/dead set, replace 1674 set runs for 1-2 days and repeats the
failure, if I replace both boards at the
> same time I`m not getting the re-call, this is killing my bottom line with
all these freebie return calls, is anyone else
> running into this scenario?? Ed at Tri-State Module says Sears will now
only change them as a pair, too many
> recalls, any ideas? Sorry for the long post, I have 2 customers waiting on
me to "fix their set" Larry E
> Larry Eastman
> American TV & Electronics
> Crystal River, Fl. 34428
>
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