iFixit - Answers With Device "Marantz Receiver"

Marantz Receiver: Marantz SR4300 - No Display/Front Panel Dead

Fri, 03 Oct 2025 05:47:29 -0700

Hi guys!

Let me start off by mentioning that this a new hobby, and I'm still learning! I have successfully repaired more simple stereo amplifiers, and this is my first attempt at an AVR receiver. I picked this Marantz up at a junk shop for next to nothing, and thought I'd give it a go!

At first the unit would not power up at all. A few repaired dry joints later, and the amp now clicks into life, and all voltages, 15v, -15, 5v, 3,3v etc are present. I have also cleaned all ribbon cables and connectors.

What I can't seem to figure out: The front panel display is completely dead. I have checked the AC voltage at the connector and there is indeed ~4,5v there, as well as 3,3v and 5v.

Any insights would be much appreciated!

Thank you.

⟐ Commented October 03, 2025 at 5:47 MST

Marantz Receiver: Marantz SR7010 No sound from digital inputs, optical or hdmi

Mon, 22 Sep 2025 13:54:51 -0700

Picture processing and pass through still works and analogue audio works but I get no audio from optical inputs or hdmi. Is this likely a hardware malfunction?

Marantz Receiver: My amplifier blow the right channel speaker

Sun, 07 Sep 2025 10:12:55 -0700

I have Marantz model 1072 amplifier. The left speaker plays sound on all the selector inputs. But the right speaker blow. I Measure a 33.5 volt on the right speaker output. What is causing it..

⟐ Answer accepted September 07, 2025 at 10:12 MST

Marantz Receiver: Marantz SR7010 in Protection mode

Thu, 04 Sep 2025 01:30:01 -0700

My Marantz SR7010 receiver goes into protection mode. The unit turns on for a few seconds and then turns off and then goes into protection mode. I do not know what the cause of this issue is.

⟐ Edited September 04, 2025 at 1:30 MST

Marantz Receiver: How to replace the bleu led light on a Marantz SR-7005?

Thu, 15 May 2025 20:23:44 -0700

On my Marantz there is a blue circle that lid up when the amp is on, but it look like only one is still working. I was wondering if it’s possible to tix it?

Any clue as how to do that.

sincerely Marc

⟐ Answer accepted May 15, 2025 at 20:23 MST

Marantz Receiver: Why does my Marantz nr1403 overheat after some minutes of volume raise

Wed, 16 Apr 2025 14:40:05 -0700

I have a Marantz NR1403 AVR system, my problem is that it overheats and turns off showing red blinking light in front of it when the volume is turned up a bit high within few minutes. I began to notice this soon after I changed the blown power ic which had 66 KHz switching frequency with similar power ic with 132 Khz switching frequency. Please, what is responsible? I also noticed that one channel of the 5 channels does not sound. I’m confused, can someone help solve this problem? I love this Marantz.

⟐ Answered April 16, 2025 at 14:40 MST

Marantz Receiver: marantz sr 7008one of the rear channles making noise or not much sound

Sat, 11 May 2024 10:07:57 -0700

one of the rear channels making noise or not much sound

⟐ Answered May 11, 2024 at 10:07 MST

Marantz Receiver: Marantz SR6013 Amplifier Circuit Failed

Sat, 16 Dec 2023 21:56:44 -0700

I’ve removed all connections, plugged into a different outlet, reset to factory defaults, re-initialized it, and I’m still going directly into the power indicator flashes red every 0.5 seconds. So I’m pretty sure it’s the Amp Circuit in some way…

It’s out of warranty (90 day refurbished warranty was up in June 2019)

Hoping to fix it myself as I paid $2k for this thing and I’m really !#^&@@ off right now that this has happened.

Does anyone have any advice on what to look for inside the receiver? I’m hoping it’s just a blown capacitor I can replace but I’m not sure where to look first and what to see if there is something noticable.

Thank you for any help or advice,

⟐ Commented December 16, 2023 at 21:56 MST

Marantz Receiver: SR 7300 broken volume knob

Fri, 08 Dec 2023 07:34:58 -0700

How do you fix a SR 7300 broken volume knob?

⟐ Commented December 08, 2023 at 7:34 MST

Marantz Receiver: Why won't my amp turn on?

Thu, 06 Jul 2023 07:54:36 -0700

I have a Marantz model 1040 amplifier that wont turn on. I checked all of the fuses, they are good, and when the amp is plugged in, I can get power through one of the outlets that is on the back of the amp. Still doesn't turn on. Not sure where to start.

⟐ Answered July 06, 2023 at 7:54 MST

Marantz Receiver: Why is the volume on my Marantz NR1200 not working?

Mon, 29 May 2023 05:21:05 -0700

Why can the volume only be heard extremely low on the phonograph...not at all on the tape player, tuner,or CD player that the receiver is hooked up to in a built in wall unit?

Marantz Receiver: Marantz av 7005 on screen doesn't work

Thu, 06 Apr 2023 16:37:46 -0700

Trying to get my on screen display to work on the tv

⟐ Answered April 06, 2023 at 16:37 MST

Marantz Receiver: 2270 lighted dial pointer replacement

Sat, 28 Jan 2023 18:41:02 -0700

Do you have Marantz 2270 lighted dial plastic pointer replacements? I know the lighting kits are available.

Thank you, Greg Morton

⟐ Answered January 28, 2023 at 18:41 MST

Marantz Receiver: Marantz 2220 - Rear inputs barely function

Fri, 20 Jan 2023 07:56:35 -0700

This is a weird one, my marantz 2220 only inputs with tape in, and the knob on phono. no other inputs work, not even auxiliary with the knob on aux. I find this very strange and would appreciate some suggestions as this is my nicest receiver as of now.

(visual of the only functioning RCA inputs)

Marantz Receiver: Volume won't go up or down while turning the knob

Tue, 20 Dec 2022 10:20:48 -0700

when turning the volume button it won't go up or down. or continues going up when I am turning in the opposite direction

⟐ Commented December 20, 2022 at 10:20 MST

Marantz Receiver: Why is it that right channel is weak sound

Tue, 08 Nov 2022 20:15:57 -0700

Marantz pm80 right channel is not good

Marantz Receiver: Why can’t I see the video on my screen

Fri, 04 Nov 2022 21:43:02 -0700

I have a Marantz sr7009 and I have no video or audio output coming out could it be in the settings?

⟐ Commented November 04, 2022 at 21:43 MST

Marantz Receiver: PCM light flashes continuously

Sat, 22 Oct 2022 19:35:00 -0700

Marantz SR 7300 It cycles through all the settings Prologic- stadium -cd/ digi1-stereo-movie - prologic etc. There is no sound unless it randomly stays on the right setting and a few seconds later it goes through the same cycle again. How can i fix this?

⟐ Commented October 22, 2022 at 19:35 MST

Marantz Receiver: Display not lighting up.

Tue, 26 Apr 2022 02:11:55 -0700

I have a Marantz 1988 stereo system (TA110/150) the amp receiver is ST110. All the little red lights above buttons and on integrated equalizer work as well as everything else on the amp except what I suppose is a the display backlight where the channel numbers appear in blue against a black background.

I'm looking on info regarding the display. Probably LCD positive lighting but don't know what type of backlight would be required and would this be just a plug or does it involve soldering. From what I can see it would involve a lot of disassembly to get to it. Could it be the microprocessor or most likely the backlight.

Thanks

⟐ Commented April 26, 2022 at 2:11 MST

Marantz Receiver: SR7400 shuts of when turned on. Says check POW5 on the display.

Mon, 28 Feb 2022 12:58:22 -0700

I've unplugged for three minutes and still won't turn on.

⟐ Answered February 28, 2022 at 12:58 MST