F61 usually indicates d.c. at the output terminals of the power amplifier/speaker connections, often due to failure of the output amp. or faulty power supply to it. On some older amps a faulty fan would cause it.
If it's a new poduct & only a few months old, you'd be covered by Panasonics warranty. Contact Panasonic for advice to get it repaired free of charge.
Cobweb
September 2005
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