[TechAssist] Re: Philips TS2757 chassis 27F8 Micro-processor is confused, or (crazy).

From: "LeRoy Westlund" <llw@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Date: Thu, 10 Mar 2005 09:55:30 -0700
Dan,
I checked the crystal, and it is good at 12.000 MHZ.
I have not removed the remote sensor , or scoped the 5 volt line yet.
I will do that next.

Thanks,
LLW

LeRoy Westlund
Westlund TV & Electronics
97 North Main                             " I forgot,..to remember,..
Centerfield, UT 84622-0087           to forget "
Ph./Fax  435-528-3822
mailto:LLW@xxxxxxxxxx

-----Original Message-----
From: danny williams <wizhd@xxxxxxxxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
Date: Thursday, March 10, 2005 9:39 AM
Subject: [TechAssist] Re: Philips TS2757 chassis 27F8 Micro-processor is
confused, or (crazy).


>micro oscillator, 5 volt line scoped?? Have u tried removing remote sensor?
>
>Dan W. Wizard Electronics
>
>----- Original Message -----
>From: "pete" <tvtech@xxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Wednesday, March 09, 2005 8:23 PM
>Subject: [TechAssist] Re: Philips TS2757 chassis 27F8 Micro-processor is
>confused, or (crazy).
>
>
>>
>> looks like you might have the windex syndrone with the front panel
buttons
>>
>> good luck
>> Pete
>> Perdomo Tv Inc Since 1972
>> Miami.Fl
>> ----- Original Message -----
>> From: "LeRoy Westlund" <llw@xxxxxxxxxx>
>> To: "TechAssist" <techassist@xxxxxxxxxxxxx>
>> Sent: Tuesday, March 08, 2005 6:28 PM
>> Subject: [TechAssist] Philips TS2757 chassis 27F8 Micro-processor is
>> confused, or (crazy).
>>
>>
>>> Hi members,
>>> This Philips model TS2757, chassis 27F8, has a confused
>>> micro-processor,...but,...it's not as confused as me.
>>>
>>> Symptom: When I plug in the power, the set will turn on by it's self.
>>> Then it shows a good picture, and sound, but will sometimes shut back
off
>>> by
>>> it's self.
>>> When it is on,, you can't turn it off with the power switch. If you try
>>> to
>>> turn the volume down, it will shut off. It will not change channals from
>>> the
>>> front panel controls, but, it will change up and down with the remote.
>>> Also,
>>> you can turn the volume up and down with the remote, but, you never know
>>> when the set will shut off. I know this sounds crazy to you guys,
>>> but,....how else can I explain it ?
>>>
>>> I have removed all 5 of the front panel control switches, and tested the
>>> set
>>> with the remote only, but,...it still acts the same way. I removed the
>>> EPROM, and it still acts the same, except for a short vertical
>>> deflection,
>>> which is normal.
>>>
>>> I have tested several e-caps in the power supply, cause all my voltages
>>> seem
>>> a little too low. Here are my voltage readings:
>>>
>>> + 130  volts off of cap # 2551, reads 125 in standby, and 123.3 in Run.
>>> Off of cap # 2561, I read 9.0 in standby, and 11.0 in Run.
>>> Off of cap # 2571, I read 7.0 in standby, and 8.2 in Run.
>>> Across cap # 2508, I read 154 in standby, and 150 in Run.
>>>
>>> I have checked for bad connections on Vert. output IC, and many other
>>> places, but found none. Picture is normal when it works, so Vertical,
and
>>> Eprom are OK.
>>> Sure acts like a bad Micro-p. to me,....but,...I hate to order a part
>>> like
>>> that, without asking you guys for a second opinion. (I am working
without
>>> a
>>> manual, as usual).
>>>
>>> Any suggestions are appreciated,
>>> LLW
>>>
>>> LeRoy Westlund
>>> Westlund TV & Electronics
>>> 97 North Main                             " I forgot,..to remember,..
>>> Centerfield, UT 84622-0087           to forget "
>>> Ph./Fax  435-528-3822
>>> mailto:LLW@xxxxxxxxxx
>>>
>>>
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>>>
>>
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[TechAssist] Re: Philips TS2757 chassis 27F8 Micro-processor is confused, or (crazy).

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