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BPL i short model television it's using La76931 ic problem is single horizandal line i cahange la78040 vertical ic but not cure.

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  • mannan Aug 25, 2012

    set on hoka stand by me ho jati hai

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Did you check if 24v supply is coming to the chip ( through a fusable 10 ohm resistor ) ?.Look for dry solder on the sync chip ( 24 pin or 40 pin IC ).

Posted on Mar 11, 2011

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Plz check 76931 secondry 5 volts

Posted on Jul 20, 2011

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1 Answer

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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/
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Where is horizontal scan out put section?


Hi Majid
Just contact any service technician to repair your TV. It will be best for you.
Gopakumar Gopalan Google

Feb 01, 2015 | Televison & Video

1 Answer

Where is horizontal output ic in my t.v?


There is no horizontal oscillator IC. The horizontal oscillation is generated and outputted by the main system control IC LA76810 itself. Refer some circuit diagrams using LA76810 to get more details about the horizontal oscillation output from the IC. Measure the frequency at that output pin. It should be some ever near 15.62KHz.
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Type in the IC number, in the search box [at the top right] of the display window, and press enter to get all related posts. It will make surf easy.

Jan 31, 2015 | Televison & Video

2 Answers

Why come white vertical line on my t.v screen in center?


You said "I checked vertical output line from main ic pin 23 found correct"

But the problem is "Horizontal Output Line" Try that.

Jan 29, 2015 | LG Televison & Video

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Why comes white vertical line on my t.v?


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Jan 27, 2015 | LG Televison & Video

1 Answer

One horizontal line on TV


Either bad solder connections on the vertical output IC or bad part in that circuit, IC or something else. I presume it is NOT a flat panel set but has a picture tube as no model number is listed.

Dec 15, 2012 | Televison & Video

3 Answers

Screen only showing single line of video in center.


hi there, is the single line horizontally or vertically? if horizontal line, you do have a vertical section problem, check some parts at vertical section, the vertical ic, the power source of vertical section ie diode & resistors. ty

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1 Answer

Thin Horizontal line through tv blank screen.


Replaced vertical IC ( la78041 ??>.. Or La78040 ). Look for born resistor beside IC. Replaced capacitor 100uf 35V too!!! Good luck !!

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