VANTAS DPA-S50 Owner's Manual - Troubleshooting
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Problem
Possible Cause
Remedy
No Power
• The AC cord is disconnected
• Connect cord securely.
(display does not illuminate on power up)
• Poor connections at AC wall outlet or the
• Check the outlet using a lamp or another
outlet is inactive.
appliance.
No Sound
• The speaker cords are disconnected
• Check the speaker connections
• The master volume is set too low
• Adjust the stereo receiver/preamp master volume
or DPA-S50 (see Volume Sync description)
• The MUTE button is pressed to “on”.
• Press the MUTE button to cancel muting.
• Speakers are not switched on
• Check the speaker’s On/Off switch on the
stereo amp.
• Incorrect selection of input source
• Use the INPUT SELECT button to manually select
the proper analog or digital input
• Incorrect connection between the components
• Double-check connections between DPA-S50 and
stereo system
• The correct source is not selected on the
• Select the input on the stereo receiver/preamp
stereo receiver/preamp
that is connected to the MAIN-AUDIO LINE OUT
No sound from the surround
• Surround mode switched off
• Select a surround mode with surround channel
speakers or they are lower
• Master volume and surround
• Adjust master volume or re-run Basic
in volume than the
speaker level are too low
Setup (Speaker Trim with Test Tone)
other speakers
• Stereo amp is not turned on
• Turn on stereo amp
• Monaural source is used
• Select a stereo or surround source
• Dolby 3 Stereo mode is selected
• Select a surround mode
• Surround down-mix is on
• Enable surround speakers in the
speaker configuration (see Basic Setup)
No sound from the center
• Dolby Digital, Pro Logic or Dolby 3
• Select desired surround mode
volume compared to other
Stereo mode is not selected
speakers
• Master volume and center level are too low
• Adjust the master volume on stereo receiver/pre-
amp or DPA-S50 (see Volume Sync description)
• Center down-mix is on
• Enable center speaker in the
speaker configuration (see Basic Setup)
Hum from Speakers
• Improper cable connections or need
• Check that all interconnect cables are firmly in
low frequency isolation.
place. Disconnect any connections that aren’t
needed. Replace cables, add isolation
transformer(s) or add ground straps between
components if problem persists.
“OH” appears in the display.
• The thermal protection circuit has activated
• Provide adequate ventilation and avoid locations
because of overheating.
that do not allow hot air to escape
Erratic operation or all operations
• The unit has experienced interference
• Turn the unit off and then on
“freeze up”
Center and surround channels
• VTRACK not enabled
• Press the Volume Sync button, “VOL SYNC” will
do not track the stereo
be displayed.
receiver/preamp’s master volume
• The main speaker wire polarity is reversed
• Verify the left and right MAIN-SPEAKER IN
polarity are not reverse connected to the
stereo amp’s left and right speaker terminals
• Stereo receiver/preamp is creating
• Disable special effects on the stereo system
special effects on the main channels.
Unnatural sound with ambiguous
• Speaker wires are connected with
• Be sure to connect the positive cable to
acoustic imaging negative
reversed polarity
the positive terminal and the negative cable to
the negative terminal at the speakers,
the DPA-S50 and the stereo amp
Digital source is not detected
• Incompatible data stream
• Make sure the source data is
Dolby Digital, PCM or MPEG
Display is off or dim but the LED is on
• If no digital signal is detected
• Press any button or play a source and
for one minute or analog source for
the display will turn on
about 25 minutes the display will go off
• The display has been dimmed with
• Press and hold the MUTE/DIM button for a few
the MUTE/DIM button
seconds and release it when you reach the
desired dim setting
To restore all parameters to the factory default settings, reset the unit by holding down the mute button while turning on the DPA-S50.
Turn the unit off and then back on and the factory settings are restored.