[TechAssist] Re: Zenith Z52Z95D8 9-1674 SWEEP 9-1690 CONVERGENCE. update
- From: "pete" <tvtech@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 23 Jan 2005 13:47:06 -0500
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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