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Ic LA76931 IS Neither storing channels on auto tunning nor manual tunning..what is the fault ?and its solution

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Posted on Jan 02, 2017

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Posted on Sep 15, 2012

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SOURCE: orignal ic la76931 7m 56r7 is dead i change ic la76931 7n 5am3 no display please help me

I think whatever problem fried the first IC is still bad and not letting new one work. Check power supply voltages first.

Posted on Jun 02, 2015

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SOURCE: can any of these ic use la76931s 7n or la76931k 7n instead of la76931 7n

I'm not sure what you are asking. LA76931 seems to be a TV model. What IC are you asking about?

Posted on Jun 02, 2015

gopakumarg43
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SOURCE: What is protection pin in la76931 7n ic

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Circuit diagrams of SMPS section of many popular brand devices are given. Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Posted on Oct 17, 2015

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3 Answers

Why can't I pick up channel 78 in Melbourne now? I could before


Sounds like the main system control memory IC to your set is fault. Try a hard reset first. Then re-tune it once (Auto-tune function). See whether it stores all the received channels or not. If not; be sure that the IC said above is faulty, and should be replaced. If you wish to get some details; visit the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Jun 25, 2015 | Televison & Video

1 Answer

Can any of these ic use la76931s 7n or la76931k 7n instead of la76931 7n


I'm not sure what you are asking. LA76931 seems to be a TV model. What IC are you asking about?

Jun 02, 2015 | Televison & Video

1 Answer

Orignal ic la76931 7m 56r7 is dead i change ic la76931 7n 5am3 no display please help me


I think whatever problem fried the first IC is still bad and not letting new one work. Check power supply voltages first.

Jun 02, 2015 | Televison & Video

1 Answer

How do I store scanned channels in Sony RM-SFL7?


Scanned channels should be store automatically to its memory; during auto-scan process. If it does not memorize, the main system control memory IC to your set is faulty and should be replaced. Do an auto-scan, and check whether it store all the received channels, as it go on scanning.
If not, contact any service technician to replace the above said IC.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Oct 24, 2014 | Televison & Video

1 Answer

Ic la76931


This is not the fault with the Main IC. Check all other components connected with it. Check the oscillator crystal. Check the settings in it service mode. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/

Mar 23, 2014 | Televison & Video

1 Answer

AUTO TUNING WONT RUN


Check and replace its main system control memory IC. If this IC is faulty, auto tuning will not work, or, the TV will store any received channels. If the TV do not tune into channels too, the AGC voltage to its tuner, and tuner itself should be checked.

May 27, 2013 | TCL L32D20

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Check whether the micro-switch [Channel up/dn] have struck or not. This might cause the TV to jump from channel to channel. Refer its user manual and make an auto search for on air programs. If the do not memorize any of the channels, the fault is with its main system memory IC.

Aug 01, 2012 | Polaroid 1720-7 Remote Control

1 Answer

No channel is storing in auto mode


Hello
I don't know the Brand and Model of your TV. Yet considering it as a common fault for all TVs and posts this solution.
Your TVs memory IC has damaged. Every TV, which has auto tuning function will have this IC in it, to whcih tuned programmes details are stored as digital signals. It is a very small IC, of 8 terminals can be located very near to the system contro IC inside your tVs citcuit board. Locate this IC and resolder it out, note its number and go for a b\new one. They are easly available, and not costs too much. Replacing it will solve your problem. OK.

Jan 25, 2011 | Televison & Video

1 Answer

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I suspect thr system may have parcially damage please try manual tunning or fine tuning

Jan 19, 2008 | Televison & Video

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