THORENS TEP 3800 - Manual (Page 32)

Trouble-shooting
32
Problem: Vol.-LED flashes during operation (bright/dark).
Proceed as follow: Check whether Mute is activated. Otherwise,
switch off the unit using the on/off switch (Power) and check, if a short
circuit or accidental grounding has occurred. Beyond that the pre
amplifier also switches off in case of temporary current interruptions.
In either case, please wait at least one minute before you
switch on the TEP 3800 again.
If the protective circuit engages again immediately, switch off the unit
and contact your specialist dealer.
Problem: The TEP 3800 does not boot up, or needs a very
long time until ready-to-operate.
Problem: An external device like CD-Player is connected to
CD- or Aux1-input, volume is turned on but the TEP 3800
remains silent
Cause: The TEP 3800 is equipped with a soft-start function in order
to allow for a long lifespan of the tubes. This function slowly boots up
the tube heating and voltage and in the meantime conducts several
parameter tests; only after the tests have been conducted with posi-
tive results the outputs will be activated. This process might take 2
to 3 minutes in total.
If the unit hasn’t powered up for long after that time, check whether
the protective circuit has possibly been engaged (see above). Please
contact your specialist dealer otherwise.
Cause: The inputs CD and Aux1 have two options for connection:
XLR- and Cinch-connectors. Please check if the switch on the rear
side is looking to the connection which is used, e.g. if the Cinch-
connector is used but the switch on the rear side is switched into the
XLR-position, the input signal from the Cinch-input cannot be ampli-
fied. The switch has to be moved into the Cinch-position.