Appendix a - troubleshooting – Abbingdon Music Research AM-777 Premier Class User Manual

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Appendix A - Troubleshooting

Symptom

Possible Cause

Solution

With power ON

• poor/no power plug connection

• insert the power plug firmly into the AC

at mains power point

no power is registered

• blown fuse at IEC/mains plug

• check and change IEC/mains plug fuse

No sound

• incorrect audio cable connections

• connect the sources to the AM-777 correctly

• incorrect amplifier operation

• make sure that the input selector on the AM-
777 is set to the desired source

Strange “blast” sound

• check speaker connectors are not

• adjust fitting between speaker and chassis

in contact with the chassis and terminal

• Ensure no contact between chassis and spade
terminals (no “short circuiting”)

Remote control does

• remote control batteries have

• replace 2 x AAA batteries

not work

expired

• object obscuring remote sensor on

• remove any objects directly in front of the

the AM-777, no “line of sight”

AM-777

• Interference from fluorescent lights

• turn off fluorescent lights or redirect the light
away from the AM-777

A “humming” sound

• loose cable connections

• re-attach the loose cables correctly

can be heard