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Marantz SR-92U - Powers Up but No Output

The unit powers up and all the controls seem to work however there is no output.  I pulled the jumpers that connect the preamp to the amp and connected the output of the preamp to an external amp and speaker but there was no output.  I was able to send a signal into the amp and got an output on all the speakers ports. Any ideas on what I should look at to determine the issue with the preamp?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

robotek
  • 1512 Answers

SOURCE: I have Marantz tuner &

Hi Andrew49

If all the amps are going into protection mode, then the preamp may be pushing a DC component with the signal. This is a little serious,and should be investigated further. There may be some deterioration in the electronics of the preamp causing this. I would suspect a leaky transistor or bypass/coupling capacitor in the DC coupled output stages. should not be too hard fix for a good HiFi tech.

I am more than happy to answer any other questions you may have about it, please get back to me here, or use the ASK function to go straight to me :) If you are still unsure, have problems, or we need to look at the situation more deeply, then before you give a rating for this advice, hit the ASK button Thanks for using FixYa, If you consider the advice I have given you as sound, a FixYa rating is a great reward for my efforts to help you. Cheers.

regards
robotek

Posted on Jul 13, 2008

Benimur
  • 6966 Answers

SOURCE: Rotel PReamp, Can I directly Connect my powered speakers to the output

Hi,

Based on your post, the pre-amp is doing its job. What might be the mismatch would be the powered speaker system plugged into the output of the Rotel. Depending on what the "powered speaker system" is, it might be that it is a low impedance such as those used in computers whereas the Rotel requires high impedance to be connected to its output. What could be tried is to connect a regular amp or receiver to the Rotel.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa.

Posted on Nov 05, 2008

Gurudristi
  • 98 Answers

SOURCE: Connecting NAD 314 Receiver\ preamp to Carver M-500t to speakers

Dear Tim,
Yes, you can connect your NAD as a preamp to the Carver power Amp.

Connect the NAD's pre-out to the input of the Carver Power Amp. You can then connect the Klipsch speaker to the Carver. Set the gain control on the NAD.

Now you should be able to control all the input and the main volume control from the NAD.

Posted on Mar 12, 2009

  • 4234 Answers

SOURCE: no audio output - Marantz 2238

This can be as simple as a poor connection somwhere in the voltage regulator circuit or a defective driver transistor or output transistor. In any case, this is a simple repair for any shop that works on vintage receivers. If it is the outputs, that will be the most expensive repair from a parts perspective. The outputs will cost in the $5-$10 range for each one and it could be 2-4 pieces. If you wish to attempt this repair yourself, you will need a multimeter that has a diode checker. Let me know and I'll provide additional details and instructions.

Dan

Posted on Apr 06, 2009

  • 3 Answers

SOURCE: my Marantz sr 4001 receiver has no output. Is

my friend has the same problem with an SR 4001. the tech said it was an internal fuse soldered to the board. the display showed an error code that clued in the tech of the problem. I am trying to find the fuse on the board, and trying to get a value(Volts-amps) of the fuse

Posted on Jul 28, 2010

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1 Answer

When i on marantz sr4600 it flashes check dsp rom, plz help me with this issue


The one that is heating up and shutting down could have a shorted output. Try removing all the speaker wires. If it still heats up and shuts down, it probably has a bad output stage.

On the one displaying the DSP ROM error, you may want to try a factory reset. using the following sequence:

Should the operation or display seem to be abnormal,
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Try plugging in headphones, if they work, it sounds like outputs have blown,

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There is no fuses for the speakers. Check setup. If the receiver has 7.1 channel input try to connect a source there so you can check output (amp) section and the speakers.

Jul 18, 2010 | Marantz SR4001

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One of your five amplifiers has blown its output transistors. Unfortuately, with SR18s, many components down the line from the outputs get fried as well, and (in my experience, anyway) it usually takes hours to track down all the problems. You can still use the unit as a preamp/tuner/surround processor by taking signal out at the pre-out jacks (you have to remove the five jumpers), and feeding it into external power amps, but repairs to the SR18's amp are probably going to be costly and complex. Sorry about the crummy news - hopefully I'm wrong!

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No audio output - Marantz 2238


This can be as simple as a poor connection somwhere in the voltage regulator circuit or a defective driver transistor or output transistor. In any case, this is a simple repair for any shop that works on vintage receivers. If it is the outputs, that will be the most expensive repair from a parts perspective. The outputs will cost in the $5-$10 range for each one and it could be 2-4 pieces. If you wish to attempt this repair yourself, you will need a multimeter that has a diode checker. Let me know and I'll provide additional details and instructions.

Dan

Apr 06, 2009 | Marantz Audio Players & Recorders

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Verify that the digital output is enabled. This is a switchable output. A brown-out or other power isseu may have shut it down.
Get back to us if that is not the case.
Dan

Mar 20, 2008 | Marantz SR-7200 Receiver

1 Answer

Powers off after about a second


If it smoked, it's NOT a fuse!! :o The output transistors are blown and must be serviced by a shop. Expect $50-$150 for that repair.

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4 Answers

Marantz SR 7200


It is likely that the PA stage has developed an offset voltage in the output stage. The faulty amplifier channel can be found by progressively disconnecting the collectors of the of the power transistors until the protection fault disappears. Once the faulty channel is found the the cause of the offset has to be traced to the faulty transistor or resistor. Don't forget that if you can smell smoke or burning then there are likely to be components(esp transistors) that have been damaged by the fault.
I had a Luxman unit that destroyed 5 transistors in the output stage that was due to an open .5W resistor in the driver stage.
Good luck.

Jan 29, 2007 | Marantz SR-7200 Receiver

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