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Ic la76931 poblem is vertical rolling

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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/

Posted on Mar 23, 2014

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SOURCE: i want ic LA76931s-7n rc service code

LA76931S7N5AF2servicecode

Posted on Dec 26, 2012

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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?

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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.

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Feedback capacitor within 1/2 inch of an5515 allowing voltage to pass.This capacitor will be warm to the touch. Be careful, or let someone with more experience complete the repair.

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Why comes white vertical line on my t.v?


Horizontal scan output fault. Check the connections to the deflection yoke from the main board. 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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Ic la76931-59y4 remote service code


To know, how to enter its service mode, by using remote control, check this link. http://electronicshelponline.blogspot.com/ It has details to get into service mode to many brand TVs. Pull up previous posts there, either by its left side bar, or, view it in 'Timeslide' option.

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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.

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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.


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 ).

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1 Answer

Vs-45607 Vertical Hold Problem


Good Day; Just replace the caps first, 99.9% fix if not replace 9v regulator. Good Luck, big IRISH.

Nov 23, 2008 | Mitsubishi VS-45607 45" Rear Projection...

1 Answer

Vertical rolling in t.v.


Kamal, You need to find the sawtooth waveform which is generated by the vertical oscilator. There will be a pin on the IC that should show the waveform. If it is not there, then the IC is bad. If it is there, then there is probably an amplifier stage prior to the deflection yoke that has a problem. Either way, the sawtooth wave is not getting to the deflection coil which is why it is rolling. Ther might also be a coupling capacitor which has opened up. Hope this helps.

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