20 Most Recent Marantz SR4500 Receiver Questions & Answers

You can do it by using the arrow keys at the front panel.Study the user manual before that.

Marantz SR4500... | Answered on Oct 14, 2013

It is not so easy to probe into to find a protection fault condition. The fault can be your output drivers- the MOSFETS/IC's fitted for both the channels, Use a meter after disconnecting to check for short in the drivers. Disconnect the positive and negative voltages to the output and see if the protect changes. Even a fault in the preamp stages that drives in high current into the output can shut the Amplifier. Sometimes this can be a noise like a HUM or HISS before the protect works. Faulty capacitors in these circuits also can cause similar issues and needs close observation.In this case I think that some capacitors are faulty as when the set is put on it charges on to make the amplifier work. Possible fault in the protect circuit or preamp.
You need to confirm and replace the specific stages or outputs. If not there can be issues in the mother board, maybe the protect circuit by itself is shutting off due to a faulty bias , maybe a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the protect is off then check for short on the speakers.

Marantz SR4500... | Answered on May 11, 2011

if your amp doesnt have air vent fins on the sides you shouldnt have any problems with overheating

Marantz SR4500... | Answered on Oct 06, 2010

Click here for Comcast Remotes Five Didgit Codes hope it works for you did for me.

Marantz SR4500... | Answered on Jan 24, 2009

If you are using AV cables from your TV for movies and a different hookup for the X-Box would explain that the relay for the sound inside your unit may have blown from being overloaded or faulty. Should be an easy fix at a trusted electronic service place.I am not sure if your system has a manual reset button underneath or on back, but you could look for a tiny hole with reset on it or a red button. It may save you a trip to the doc.

Marantz SR4500... | Answered on Nov 11, 2007

There are 2 causes of the problem that you describe. One is the input signal is too high and is over driving the amp. The other is the output impedance is dropping due to short circuit etc. There is no adjustment on the protection circuit. It is possible that a weak sensor is present or a bad transistor etc, but you need special equipment to check that.

Marantz Audio... | Answered Yesterday

If it is a twist type knob that regulates the volume control they can often brake so you will need to take it off to inspect it you can do this by pulling it directly towards you ( a small screw driver placed behind it can help to get it off ) then you will be able to check to see if it is broken or not or if you can then control the volume by turning the shaft that the knob was meant to be attached to , a small amount of epoxy glue should fix the knob back onto the shaft if this is the problem .

Marantz Audio... | Answered on Oct 18, 2017

It could be a burned out resistor in the main power amp. Follow the channel wires from the speaker that is playing up till you get to the power amp. Look around for anything odd. Compare it with the other channels, as they are good.

Marantz Audio... | Answered on Oct 03, 2017

Hi. It's nearly four months since you posted this I know.
But ive only just seen it. Just wondering if you've got it sorted ?

Marantz Audio... | Answered on Sep 23, 2017

Player cannot focus on disk and is no good. Replace

Marantz Audio... | Answered on Sep 12, 2017

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