[TechAssist] Re: Zenith Z52Z95D 9-1674 no video, red crt blurry/smeared convergence issues
- From: Bill Grabowski <bgrabowski@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 23 Jun 2005 12:59:58 -0500
I agree change the 120K resistor on the red CRT board should do it.
al m wrote:
> May be this will help, maybe you already tried this but,The smearing picture
> is probably the resistors on the crt boards. Check the solder on the
> daughter board for cracks for the no video problem.
> Al Marquardt
> ampm@xxxxxxx
> Al Marquardt Electronic Repair
> 206 W Main
> Girardville Pa. 17935
> ----- 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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>
>
>
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--
*****************************
Bill Grabowski
Triangle Appliance
Kenosha,Wi 53142
262-694-6500
262-694-6523 fax
bgrabowski@xxxxxxxxx
*****************************
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