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Magnavox TP2782 27R501 Won't Auto-Program    
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_Tony
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PostPosted: Tue Mar 10, 2009 10:44 am    Post subject: Magnavox TP2782 27R501 Won't Auto-Program Reply with quote

We have a Magnavox TP2782 27R501. It will go thru the auto-program on screen but will not find and retain any channels. I can go to any channel directly with the remote. I have replaced the memory IC but still have the problem.

Thanks for any input,
Google

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_Al
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PostPosted: Tue Mar 10, 2009 10:44 am    Post subject: Reply with quote

Sounds like the micro isn't seeing a sync pulse.
_Gary
Guest





PostPosted: Tue Mar 10, 2009 10:44 am    Post subject: Reply with quote

if the eeprom didn't fix it then the main micro is bad
scope the comm lines between the 2
probably find 1 that is lo or stuck hi
_Steve
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PostPosted: Tue Mar 10, 2009 10:45 am    Post subject: Reply with quote

I disagree. If one of the lines was stuck hi, the set's front control
buttons wouldn't respond..
_John
Guest





PostPosted: Tue Mar 10, 2009 10:45 am    Post subject: Reply with quote

Symptom: Will not auto program statiions into memory. Tuner searches
three times before locking in the cable mode.

Cause: Parts missing

Cure: Install Zero ohm SMD jumper BRS203, located under top mounted
capacitor C292 at F-3.
Install 6.8k ohm SMD resistor R253 located of of pin 28 if IC200
(4835 111 37272.
Google

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