S T E R E O A M P L I F I E R / A U T O M A T E D S W I T C H E R

TROUBLESHOOTING

TVA50 will not power up

Is TVA50 plugged in to an unswitched outlet?

Is the POWER/ACTIVE LED Red?

120VAC measured from outlet with voltmeter?

Try another unswitched outlet.

TVA50 will not activate (Current Sense Mode)

Is the TV plugged in to the sensed out- let on the TVA50?

Is the TV turned ON?

TVA50 will not activate (12V Trigger Mode)

Is the voltage on the TRIGGER IN ter- minal 3-30 VAC/DC?

Is polarity of 3.5mm miniplug correct? (tip=+12VDC; sleeve=ground. DC only. Polarity non-critical for AC voltage trigger.)

No audio output A pair/B pair (whole-house/nonswitched mode)

Is the POWER/ACTIVE LED Red?

Are the speakers connected to the TVA50?

Are the 4 pin speaker connector plugs (IN/OUT; A/B) properly seated?

Is the speaker wire properly stripped?

Are the lock tabs snapped down?

Is the whole-house audio source ON and playing?

Is the volume up on the whole-house system?

If using an in-wall volume control, is it turned up?

No audio output A pair/B pair (local/switched mode)

Is the POWER/ACTIVE LED on the TVA50 Green?

Is the TV/source line out connected to the LINE IN on the TVA50?

Is the volume up on the TV?

Is the volume control on the TVA50 properly adjusted?

Audio level in local/switched mode too high/low

See "Volume Control" section, page 15.

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Niles Audio manual TVA50 will not power up, TVA50 will not activate Current Sense Mode