Troubleshooting – Go Power! GP-1750HD User Manual

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Go Power! Modified Sine Wave Inverter

Owner’s Manual


6.2 Input voltage

The power inverter will operate from input voltage ranging 10 V – 15 V. If the voltage
drops below 10.7 V, an audible low battery warning will sound and the voltage indicator
will be in the lower red zone. The power inverter will shut down if the input voltage
drops below 10 V. This protects your battery from being over discharged.

The power inverter will also shut down if the input voltage exceeds 15 V. This protects
the inverter against excessive input voltage. The voltage indicator will be in the upper
red zone. Although the power inverter incorporates protection against overvoltage, it
may still be damaged if the input voltage is allowed to exceed 20 V.

7. Troubleshooting

7.1 Common problems

a) Buzz in audio systems

Some inexpensive stereo systems will emit a buzzing noise from their
loudspeakers when operated from the power inverter. This is due to the power
supply in the device does not adequately filter the modified sine wave produced
by the power inverter. The only solution is to use a sound system that
incorporates a higher quality power supply.

b) Television


Operation of the power inverter can interfere with television reception on some
channels. If this situation occurs, the following steps may help to alleviate the

• Make sure that the chassis ground lug on the back of the power inverter is

solidly connected to the ground system of your vehicle, boat or home. With the
exception of the GP-2500 which would connect to one of the mounting screws.

• Do not operate high power loads with the power inverter while watching


• Make sure that the antenna feeding your television provides an adequate ("snow

free") signal and that you are using good quality cable between the antenna and
the television.

• Move the television as far away from the power inverter as possible.

• Keep the cables between the battery and the power inverter as short as possible

and twist them together with about 2 to 3 twists per foot. This minimizes radiated
interference from the cables.

7.2 Troubleshooting guide

Problem and Symptoms

Possible Cause


Low AC output voltage
95-105 VAC.

Using standard

Use true RMS averaging

Low output voltage and
current indicator in red zone.


Turn off. Reduce load, turn

No output voltage and
voltage indicator in lower red

Low DC input

Recharge battery, check
connections and cable.



are audible low
voltage / over
load alarms on all

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