[TechAssist] Re: Zenith Z52Z95D8 9-1674 SWEEP 9-1690 CONVERGENCE. update

  • From: "pete" <tvtech@xxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Sun, 23 Jan 2005 15:01:58 -0500

have you tried to change the conv yokes just to discard the conv yoke?

Pete
Perdomo Tv Inc Since 1972
Miami.Fl
----- Original Message ----- 
From: "al m" <ampm@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, January 23, 2005 1:52 PM
Subject: [TechAssist] Re: Zenith Z52Z95D8 9-1674 SWEEP 9-1690 CONVERGENCE. 
update


> Thanks Pete. I saw on here to replace them with 180's????
> Al Marquardt
> ampm@xxxxxxx
> Al Marquardt Electronic Repair
> 206 W Main
> Girardville Pa. 17935
> ----- Original Message ----- 
> From: "pete" <tvtech@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Sunday, January 23, 2005 1:47 PM
> Subject: [TechAssist] Re: Zenith Z52Z95D8 9-1674 SWEEP 9-1690 CONVERGENCE.
> update
>
>
>> al  think you should replace buth ics with a 110 number and see what
>> happens
>> Ive never used 180s to replace 110s
>>
>> good luck
>>
>> Pete
>> Perdomo Tv Inc Since 1972
>> Miami.Fl
>> ----- Original Message ----- 
>> From: "al m" <ampm@xxxxxxx>
>> To: <techassist@xxxxxxxxxxxxx>
>> Sent: Sunday, January 23, 2005 10:04 AM
>> Subject: [TechAssist] Re: Zenith Z52Z95D8 9-1674 SWEEP 9-1690 
>> CONVERGENCE.
>> update
>>
>>
>>> If someone gets a 9-1690 convergence board in,  could you please let me
>>> know
>>> if the blue convergence heatsink should be running hotter than the red
>>> one.
>>> Mine is running at 138f deg..
>>> Al Marquardt
>>> ampm@xxxxxxx
>>> Al Marquardt Electronic Repair
>>> 206 W Main
>>> Girardville Pa. 17935
>>> ----- Original Message ----- 
>>> From: "al m" <ampm@xxxxxxx>
>>> To: <techassist@xxxxxxxxxxxxx>
>>> Sent: Wednesday, January 19, 2005 4:18 PM
>>> Subject: [TechAssist] Re: Zenith Z52Z95D8 9-1674 SWEEP 9-1690
>>> CONVERGENCE.
>>> update
>>>
>>>
>>>>
>>>> This set the blue convergence was replaced with a STK392-180. The
>>>> picture
>>>> is
>>>> good but the heat sink that the IC is on is measuring 139Fdeg. The red
>>>> heat
>>>> sink is a lot cooler. I have changed all caps on the board and checked
>>>> all
>>>> the other components. There is a -5V regulator on this heat sink. The
>>>> voltages are all correct on the board. Could this heatsink be running
>>>> hotter
>>>> than the other one because of the -5V regulator? Could this be normal?
>>>> All
>>>> the heat seems to come from the -5V regulator. When I measure the temp
>>>> on
>>>> the IC it is cool but on the regulator it is 138F. Am I chasing a ghost
>>>> again with this being normal? Thanks.
>>>> Al Marquardt
>>>> ampm@xxxxxxx
>>>> Al Marquardt Electronic Repair
>>>> 206 W Main
>>>> Girardville Pa. 17935
>>>> ----- Original Message ----- 
>>>> From: "al m" <ampm@xxxxxxx>
>>>> To: "tech assist" <techassist@xxxxxxxxxxxxx>
>>>> Sent: Saturday, January 08, 2005 11:44 AM
>>>> Subject: [TechAssist] Zenith Z52Z95D8 9-1674 SWEEP 9-1690 CONVERGENCE.
>>>>
>>>>
>>>>> This set had no power. I replaced the B+ diode and the set ran but the
>>>>> blue
>>>>> convergence was off. Changed the blue convergence IC ( STK392-110 with
>>>>> STK392-180). The Ic's are running hot. How hot are these supposed to
>>>>> run.
>>>>> I
>>>>> can keep my finger on it but it is hot. I may have something more 
>>>>> wrong
>>>>> with
>>>>> the power supply.
>>>>> Al Marquardt
>>>>> ampm@xxxxxxx
>>>>> Al Marquardt Electronic Repair
>>>>> 206 W Main
>>>>> Girardville Pa. 17935
>>>>>
>>>>>
>>>>>
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