Question about Panasonic Viera TH-46PZ85U Plasma TV

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After severe lightning storm, TV only powers on (fans run so I so not think it is the power supply board ?) yet no image of any kind. There is HDMI from cable box to TV.

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  • eboonega Aug 26, 2010

    Not really as I am not qualified to run the test perscribed. TV was professionally repaired.

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  • Panasonic Master
  • 19,396 Answers

Hi.

That means that the monitor is in forced standby. This happens when an internal fault is detected. The state is called protection or protect mode. The state is not uncommon after a power surge. Either protecction kicked in because of surge sudden change of voltage, or the PSU is fried. PSU must be tested, even if this is most common fault, more parts may be damaged.

Try first leaving the unit disconnected from power for 15/20 mins, that will probably not fix the problem, but is a necessary step in troubleshooting. (general indications here Why my TV does not start up and remains in standby.Guidelines are valid for all TV. Under protect mode TV will act in different ways depending on model)

The unit is repaired testing the internal component.

This TV comprises few boards: a Button/IR board, a digital controller board, a PSU, an inverter.

If you are a repairer,testing willl start from PSU, following voltages on main board and testing the inverter.

Parts can be tested following this procedure : A full test ...

the best way to contact an authorized technician is by ringing the number listed on the owners manual. Alternatively try Fixya directory here:Fixya directory- Consumer Products Repair

To get parts try ShopJimmy .

Regards.

Ginko

Posted on Aug 22, 2010

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