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LG60PC1D has grainy pic on all inputs on turn on this shuts off after 10 secs. Checked voltages after disconnecting both y drives. V ok and tv doesnt shut off. Put 2 known y drives in (corrrect part number) turned on heard a pop coming from Y sus. Now all I get is straight line across screen. Could be Y sus maybe? How can I tell for sure?

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Ok you need to check the ceramic caps in the high voltage section of your TV they are in parallel with each other next to the transformer. Just one can cause a system overload and shut down your TV. Notice that your TV has the exact same circuit for each color gun. The best way to check them is to take one lead of the caps out of the circuit board put your Fluke Digital MM on capacitance and make sure it is on autorange. If one of these caps is reading a farad that is way below the others. This is causing your TV to have a grainy pic and shut down because it's trying build up to a certain voltage before it discharges but it cant reach it thus causing a system overload. Also check in the tuner section and delfection section of your TV for weak electrolytic caps both surface and through mount.

Posted on Aug 30, 2010

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Grainy pics on all inputs on plasma TV is generally either high voltage problem or grounding problem.
The first one is more common. If you get reddish or white light dots scattering all over the picture , then voltage to panel is too high.

Service manual for this model is not available for free download. Purchase available here:Service-Docs.com .

Posted on Aug 30, 2010

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Posted on Jan 02, 2017

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Panasonic TH-46PZ85U Plasma TV All 3 HDMI was working fine with cable box, PS3, XBOX360. I used to connect my pc to the tv with a dvi-hdmi cable, but recently unplugged it. So I tried to plug in the same...


Symptom:
TV shuts off unless all the input (phono and HDMI) cables are disconnected. The
symptom may be intermittent.
Cause:
There is an abnormal AC voltage entering the TV from one of the input cables or AC
outlet.
Remedy:
Follow the Testing procedure to determine if there is a problem external to the product.

Concept
Constant symptom
If the TV no longer shuts off when all input cables are disconnected, then one of the
input cables is introducing abnormal voltages into the TV. Panasonic Plasma TV sets
have 3 wire AC plugs.
As a result, abnormal voltages introduced into this TV will cause the TV to shut off for
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Intermittent symptom
If the abnormal input voltage is borderline (marginal), the TV shut off symptom may be
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Protection Proof:
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Threats from the HDMI input:
Excessive voltage from an HDMI cable connected product will activate the Plasma TV’s
protection circuitry. Placing an isolating / buffering connector (sometimes called a voltage
conditioner) between the TV and the HDMI input cable often solves the problem.
Testing -
Unplug all the HDMI inputs from the TV. Turn on the TV. Plug in the HDMI inputs one at a
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2 Answers

LG60pc1d is fried


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parts cost about $300 + 2 -3hours of labour so an end cost of possibly $600.00 depending on who does it

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Please raste my help++++Thanks for using FIXYA

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1 Answer

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