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I have an lg50pc3d television. The screen started flashing.

Customer Question
The y board is ticking...
I have an lg50pc3d television. The screen started flashing. The y board is ticking about 1 per second even with the buffers connected.
Should I just replace the y board? Or should I replace the buffers as well.
Submitted: 2 years ago.Category: TV
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Answered in 1 minute by:
4/30/2015
TV Technician: Anthony_Infotech, Technician replied 2 years ago
Anthony_Infotech
Anthony_Infotech, Technician
Category: TV
Satisfied Customers: 15,166
Experience: 20+ years experience TV expert (field and bench) 9 approved qualifications in TV-ELECTRONICS
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Hello my name is Anthony
Welcome
Thanks for the Question

Have you measured the voltages for the Vs and Va on the powerboard?that has to be the first check ,you can't judge anything by any noises

Let me know

Anthony
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Customer reply replied 2 years ago
Ok. I have to head to work. I will measure once I get back home and let you know.
TV Technician: Anthony_Infotech, Technician replied 2 years ago
OK yes thats the first procedural check

Anthony
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Customer reply replied 2 years ago
the voltages are 197.1 and 61 volts
TV Technician: Anthony_Infotech, Technician replied 2 years ago
OK that seems about correct for the Vs and Va so their is no short circuit on the scan boards the power board is working, look at the logic board that is the little board with many leads feeding the scan boards is the led lit or blinking?
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TV Technician: Anthony_Infotech, Technician replied 2 years ago
that is the led on the logic board itself this gives some ref as if the logic board is working
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Customer reply replied 2 years ago
one blinks as if communicating - 3 are on solid
TV Technician: Anthony_Infotech, Technician replied 2 years ago
That would sound like its working, have you double checked all ribbon leads are home and good taken out checked then re-inserted?the way it is the scan boards have no short (they usually go short when bad)the powerboard and logic are seemingly at this point working, it could still be scan board and buffer issues but then your left with a board swapping exercise Let me know if ribbon leads are good
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Customer reply replied 2 years ago
yes I took out the ribbon cables and re-inserted it :-)
TV Technician: Anthony_Infotech, Technician replied 2 years ago
I'm afraid your in a situation of swapping boards now it could be the Y buffer like you said and it may not have damaged the Y scan (yet) so try the buffer first as the Y scan seems to be OK its the buffer that damages the Y scan usually and if it was short I would be asking you to replace both, just to add you do need to be careful injecting money into a set of this age Let me know if you need more info A positive rating is appreciated thank you, ***** ***** be a rating bar with this post, thanks again, please note the question will not close RegardsAnthony
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TV Technician: Anthony_Infotech, Technician replied 2 years ago
Maurice how is this working out please?

Anthony
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