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Re: Fluctuation and Grounding issues
Based on your post/description, I would suggest the use of a voltage regulator identical to those used by desktop computer systems. They normally are rated at 500 watts and should be sufficient for your Sony 32 in. LCD which would consuming something like ~130 watts. Additionally, try to get those models that have polarized AC plugs to match your house wiring and that of the Sony. This would also take care of the grounding problems.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
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No problem, it's how plasma tv's function - that fluctuation is caused by the anti-burn technology. In your case it's apparently set on an very aggressive setting so it has become visible - you can change that from the Menu , Setup section.
if you have an experience in basic electronics trouble shooting you can fix the problem. all you need is to open your TV unit to trouble shoot damage parts, use digital tester. first smell burn parts i'm sure some parts are damaged due to wrong input voltage. then start checking parts at power supply, blown fuse, shorted rectifier diode and damaged capacitors. after you checked suspected parts disconnect all the connectors at the load side of the power supply then try to turn on using 110 v supply, check the output voltage if their is an abnormality. follow the label voltage if constant no fluctuation which can damage the main board.
since the problem is dead set all you need is open the back cover to trouble shoot, use digital tester. check blown fuse and then power on the unit check the output voltage at power supply panel board which supply the main CRT chassis board. if no output voltage check open fusible resistor its about .1 ohm, then check shorted rectifier diode and transistor sometimes cause by voltage fluctuation. just consider also the horizontal out put transistor it might be shorted cause by over current coming from power supply.
Remove the mother board...similar to your home pc, Locate the
capacitors that had gone bad take it to a television repair shop and
had them replace those Capacitors (with a slight voltage increase). IT will Start Working fine.
It happened because of Voltage fluctuation so beeter connect a Voltage Controlling device to your Polaroid LCD.
I have 3 words for you service, service...oh yea and service. The problem that you are having is some sort of power fluctuation that I have only saw within Sharp units. Give them a call and let them send out a Technician to take care of the issue. Hope you are still in warranty!
for cms voodoo, change your power module. for tomchik, check your input voltage for voltage drop or fluctuation, if any employ voltage stabilizer, then change your power module. make sure that there is enough ventilation around your tv. for bananahead , go and change your backlight inverter