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Troubleshooting
26 | RS 165
Other problems
If you encounter a problem that is not listed in the table, or if the solutions provided do not work, please visit
the RS 165 product page at www.sennheiser.com for the most up-to-date list of frequently asked questions.
You may also contact your local Sennheiser service partner for assistance. To find a Sennheiser service partner
in your country, visit www.sennheiser.com.
Problem Possible cause Possible solutions Page
Transmitter
does not turn
on
No power connection.
Check the connection of the power supply
unit.
15
Headphones
do not turn on
The rechargeable batteries are almost
empty.
Recharge the rechargeable batteries. 17
No batteries inside the battery
compartments.
Insert the rechargeable batteries. 16
The rechargeable batteries are inserted
the wrong way round.
Remove the rechargeable batteries from
the headphones and reinsert them again.
Observe correct polarity.
16
Operating time
decreases
The rechargeable batteries are
exhausted.
Replace the rechargeable batteries with
new ones.
16
You hear
beeps in the
headphones
The rechargeable batteries are almost
drained.
Recharge the rechargeable batteries. 17
Headphones
cannot be
connected
to the
transmitter
Distance to the transmitter is too large. Reduce the distance to the transmitter. –
Headphones are not paired with the
transmitter.
Pair the headphones with the transmitter. –
Another set of headphones is being
charged so I can‘t pair my second
headphones.
Perform a proximity pairing:
1. Place the headphones as close as
possible to the transmitter.
2. Switch the headphones on.
3. Press the Volume +/- buttons
simultaneously for about 7 seconds.
–
Headphones are not compatible.
Use Sennheiser HDR 165, 175, 185, or
195 wireless headphones only.
–