Photogenic Professional Lighting Powerlight Manual (various) - Manual (Page 27)

GENERAL TROUBLE SHOOTING
COMMON PROBLEMS AND CAUSES
Unit does not charge.
Probable causes:
a. Fuse blown. (Unplug and discharge the unit-Replace fuse.)
b. No line power to unit. (Check line cord and outlet.)
Modeling light does not turn on.
Probable causes:
a. Lamp turned off. (Press FULL ON/OFF button until LED lights.)
b. Lamp burned out. (Inspect and replace, when cool. See SERVICE
section of this manual.
Light flashes by itself without apparent reason.
Probable causes:
a. Defective trigger cord, or trigger cord incorrectly polarized.
b. Bright light falling on photoslave.
c. Poor connection in line cord.
d. Reverse connection on trigger cord connection at camera.
e. Some radio slaves will cause interference - consult slave manufacturer.
Trigger cord will not flash unit, but charge indicator shows that the system has
charged.
Probable causes:
a. Defective trigger cord.
b. Defective flashtube. Turn unit off. Wait until cool, then replace
flashtube. (See SERVICE section of this manual)
c. Unit is on, but will not charge. (Safety thermal detector activated by
heavy use, beyond specified Flashing Rates on page 9.)
d. Unit completely off, but is connected to power and is turned on.
(Safety thermal switch activated through internal discharge.
Decreasing flash power setting repeatedly with the down arrow key
or placing the unit into STANDBY with the remote control repeatedly
causes the flash power to discharge through an internal power
resistor. If the resistor over-heats, a thermal switch will open and cut
off line power to the unit. After a 3 minute cool-off period, the power
will return. This is a unit-protecting feature and can be caused by user
actions or circuit failure.)