friends I can't get the solution to that fault
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LG
LG TV fault board ZY-T2110A-01 vertical grating
46.781
hace 5 años
hace 5 años
If you placed a new vertical IC:
Did you check the presence of the supply voltage of the vertical IC and verify the good condition of the polarization and work components of the vertical IC and the YUGO. ?
Indicate the IC series and voltages obtained on each of the vertical IC pins
hace 5 años
I haven't changed anything yet. And I was solving some welding and now the grating comes out from top to bottom change.
17.741
hace 5 años
Instead of getting worse it gets worse. Now it has horizontal deflection failure.
Look in good light and magnify that plate that is not broken. If it isn't, you have more false contacts. Or check the yoke terminals that are well connected.
And his sokdaduras.
That did not cut off the wires that connect to the yoke. It is common to break the board where the flyback goes.
46.781
hace 5 años
The new fault indicates that it already has vertical deflection.
Check connections, tracks and components in the yoke circuit in its horizontal section (Red and Blue cables)
hace 5 años
Ready. The yoke has a plate where the coils arrive and a corner was half broken where the tip of the coil reached that of the red wire. What I did was take off finish take off the coil and deaf again and it worked. But the image looks a bit arched in the middle but only a little bit I don't know if that can be improved with the control.
46.781
hace 5 años
This is perhaps due to the alteration of some component in the East-West (EW) or Pincushion correction circuit, as the case may be.
If it is mild, it can also be corrected by entering the SERVICE MENU and resetting the respective parameters.
hace 5 años
In the normal menu it does not appear but there is another menu that I don't know how to enter
46.781
hace 5 años
To enter the SERVICE MENU, you must enter a sequence or password.
With the Chassis that indicates not much information is found on the web
17.741
hace 5 años
hace 5 años
Hi. Because he does not comment first on everything he did as a technician in trying to solve the fault.
He asks for help but does not make a detailed technical report accordingly. So have better help.
That fault can be many things.
Mainly false contacts or printed cut.
Increase in voltage or power to ic due to component breakage. IC included. Because if the ic was shortened at least the low Ohmic value of the power line was broken.
short yoke Flyback on the run.
All electrolytics are changed and the circuit components are measured one by one. Low ohmic resistance that goes to ground from the vertical output pin. Vout .
make this tool It is very useful .
https://www.comunidadelectronicos.com/proyectos/inyector-50-60Hz.htm
It may be a lack of the sawtooth pulse generated by the jungle.
hace 5 años
I have not measured anything yet I have only solved some points that seemed loose and I am new to this.
17.741
hace 5 años
You know for the next question then friend.
What you have to do and inform.
Above you leave what you should do in these cases.
17.741
hace 5 años
Discuss the complete model and what vertical tried it carries.
Say you are more interested in solving the fault or the diagram at the moment.
On the Internet you can search with the model on the cover indicates. More so if you put the chassis number.
Do you know how to work with a diagram?
For such a fault, the diagram or circuit is not much needed. I mentioned that vertical leads.
hace 5 años
It has no model on the board only this is the chassis number that is ZY-T2110A-01 and I am interested in solving the fault and I work better with the diagram .. And it carries the D78040
17.741
hace 5 años
Measure carefully on the pins of IC D78040.
PIN 2 and 6
PIN 4
And comment. We await your contribution.
17.741
hace 5 años
In my first contribution that was the first answer he had to his question I gave him the way to solve the problem. That it was just false contacts. .
Also in his second fault. Vertical line. What is horizontal failure. I sent him to control the cables in the yoke and there was his problem. That was fixed.
In both cases it was I who guided him in both failures first. AND YOU GIVE THE SOLUTION TO ANOTHER COLLEGE.
He does not appreciate my contribution. That is not right. It's irritating. It makes you want to not help anymore. Let them study. It is easy for you to enter here and ask for help. Solve something earn a few pesos. And don't give thanks.
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