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Support and repair information for Marantz home theater AV receivers and older audio-only receivers.

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No Signal from Positive Pole on FL Speaker output on NR1608

I noticed that my FL speaker was out. If I plug the FL speaker into the center channel and play the pink noise test tone in the Marantz setup on center channel I get sound out of the speaker so I know there are no wire continuity issues and the speaker works. If I connect the center speaker to the FL and play the test tone on the front left I get nothing as well. If I connect the negative pole of the speaker to the FL negative and Center positive and play the center test tone I get sound on the speaker so I know the negative pole of FL has continuity. If I connect the speaker negative to the negative pole of center and positive to FL positive pole and play the FL test tone I get nothing. I am not able to send the AVR to an authorized repair facility so I would either need to diagnose this myself or find a local repair shop. Is this kind of thing a common capacitor issue? Are there specific things I should look for? I have yet to open the AVR up, but thought I would post here first.

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Hi @objecttothis,

It could simply be a bad connection on the back of the LF output connector. If not, it could be any number of things.

It may be worth it to get a copy of the service manual (supplier example only). The schematics will help to trace the audio path from the input through to the output of the associated audio amp and then to the LF output connector. Usually service manuals have a parts list as well. Might save a lot of time.

There are other suppliers online that may suit you better. Just search for Marantz NR1608 service manual to get results

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objecttothis estará eternamente agradecido.
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