Question about Panasonic Viera TH-42PZ85U 42 in. Plasma TV
Want to do the repair on the PS? Then get out your unsoldering tool and unsolder all the suspected parts, caps, diodes, resistors, relays, etc., making notes of where they came from and noting polarities. Then whip out your test gear and start working. Replace any and all defective parts as you come to them. If you have any IC's on the board you are sh-- out of luck - you replace if you are successful at getting the old one out. Still wanna repair? Good luck to you.
Psst - you send it out for repair and the dude is gonna replace the board - trust me.
Posted on Mar 31, 2017
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Posted on Jan 02, 2017
What I'm learning is there are several models of Panasonic TV's that have a video card that doesn't play well with HDMI applications and the end result is, you need to call this number and not only make arrangements to replace the bad board,but also this!
Your model doesn't show below,but I'd certinly inquire about the necessity of a "Firmware" update!,,,Panasonic knows FULL WELL they have a HUGE problem here!
Hope this helps!
At panasonic.ca I found the listing for the fw update under customer support-important notices
If you own a plasma TV with model and serial number within the range specified below, please contact our toll-free VIERA Concierge hotline service at 1-866-330-0014. A VIERA product expert will arrange an in-home software update for your TV at your convenience.
Model Numbers Serial Number Range
TH-42PZ700U **71250001 ~ **80189999
Posted on Jan 29, 2010
A common problem for these is bad capacitors in the power supply, Remove the back from your Tv and look at the power supply on the left hand side.
You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed.
This will cure the problem as they overheat being sat next to a heatsink that gets very hot!
Try and change them for the same 3300uf but a higher voltage.
Hope this helps
Posted on Oct 04, 2010
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