dry joints/and or failure of the field op ic can cause this too...
steve
November 2006
Usually due to short circuit line output transistor Q551.
There is a repair kit for this part: Kit number TZSSEK001.
Includes new transistor 2SD1577LB for improved reliability.
Cobweb
October 2006
I can answer this question...
How can i fix my panasonic tv, tx-w28r4dp, chassis euro 5?