Troubleshooting - Renkforce MP-2000 Bedienungsanleitung

11. Troubleshooting

With this power amplifier, you purchased a product built to the state of the art and operationally safe. Ne-
vertheless, problems or errors may occur. The following contains descriptions for the removal of possible
interferences.
Always observe the safety information!
No function, the device cannot be switched on:
• Is the mains plug connected to the mains socket?
• Is the amplifier's fuse defective?
• Check the mains socket. Is it properly supplied with current?
No sound is audible:
• Are the LEVEL (2) volume controls of the amplifier set to minimum (left stop)?
• Are audio source and speakers connected correctly?
• Is the audio source switched on and its volume control not set to minimum?
One channel does not work:
• Are the inputs and speakers connected correctly? Has a plug come loose?
• Is the audio source's balance control in the centre position?
• Is one of the LEVEL (2) volume controls of the amplifier set to minimum (left stop)?
The sound is distorted:
• The level at the mixer is set incorrectly/the amplifier input is overmodulated.
• The volume at the amplifier is set too high.
A humming distortion can be heard:
• Are the signal cables from the audio source okay?
• There is a ground hum between the connected devices. Connect the signal ground with special earth-
insulated cables.
Playback has no bass share:
• Is one of the speakers connected with the polarity reversed?
Repairs other than those described above must only be carried out by an authorised specialist.
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