Denon AVR-4310CI Shuts down - Red flashing power light- High DC offset on one channel - Part 1

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Here is a Very nice Denon AVR-4310CI AV receiver that shuts down a few seconds after turn on with the dreaded red flashing power light. I found a high DC offset on one channel. This is part 1, troubleshooting
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00:00 Intro
00:58 Surround Back Right schematic
01:33 The shutdown symptom and voltage measurements
02:38 Part way through disassembly
03:41 Diode junction tests on the output transistors
06:48 I made a power supply to test the board out of the unit
08:53 Testing the board out of the unit
09:59 My mistake
10:26 Testing the board out of the unit Part 2
11:27 Testing the board with an audio input
14:04 Closing words

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Опубликовано:

11 июл 2024

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Комментарии : 24

@gregorioavalos1256 3 месяца назад

Wow, I am amazed by the complexity!

@frankpitochelli6786 2 года назад

I'm seriously thinking that the future of our service business is the repair of vintage audio and video, as well as some appliance service....it will never be what it was 20 yrs ago, but, there's still a few things to keep us busy in our golden years. Good job as usual Steve.!

@valperiandri6055 2 года назад

A few of those caps look like they have seen some serious heat! The sleeves being shrunk like that would make me replace them! Can't wait for the next installment!

@norcal715 2 года назад

I have seen that mainly on the main filter caps on these later models, I am starting to think they were made that way, or they use very low temperature heat shrink on those. This thing showed very low signs of overheating.

@barryg41 2 года назад

Man its just fun to watch you work. 🙌🇺🇲🇺🇲🙌

@fanfan-tz2tk 2 года назад

Very interesting diagnostic. Thanks for sharing

@randyr.parker2698 2 года назад

Will be interesting to see what the problem is............coming up.

@apolinarmartinez5723 2 года назад

Great video!!!

@Trucam2020 2 года назад

It's a pain in a neck to disassembly any recevier which is not a stereo receiver as this recevier. Why the manufacturer don't think about maintenance.

@C_O_N_C_E_P_T 2 года назад

It’s because they are packing so much inside these receivers they have to figure out ways to stack them inside the smallish box. Newer receivers with 11 channels and up are even worse inside.

@mixinginthebox 2 года назад

Thank you.

@maxblade01 2 года назад

Not the diagnostic, but really really adventures video, loved every bit of it... By the way how are you mr.norcal😊

@norcal715 2 года назад

I am great, Thank you.

@edithboozy1000 2 года назад

I have a Denon 5308ci. I really hope you get to open one of them up one day.

@robinsonsoto8471 2 года назад

You are a troubleshooter.

@gt50stang12 2 года назад

👍

@gregorioavalos1256 3 месяца назад

Is volume at zero when you are using the bias test point to test DC offset? My bias test point is showing 13.5ma but the manual says 8.5 +/-.5 but the potentiometers don’t go lower than 12.

@jorgehenry208 Год назад

Hi NorCal l have an AVR-4310ci and it has no audio, the HDMI fails, do you know which chip has to do reflow ? Thankyou

@MrShitrope 2 года назад

denons are notorious for the voltage regs to go out in the power supply causing the same symptoms

@norcal715 2 года назад

I have replaced many +15 and -15 regulators, mostly in older units though. All this needs is B+, B-, and ground to operate the amp.

@tech_audio_video 2 месяца назад

Sr please give me full circuit diagram

@DrAVRECEIVER 2 года назад

Hello bro,,,,, I hope u can solve my problem with denon 3310 networking ,,,, who can I contact personally.

@norcal715 2 года назад

I have not had much success with networking. Make sure the firmware is up to date even if you have to use a USB (if that is even possible). Do a "reset to factory" complete reset before you give up. If all else fails try to contact the manufacturer technical assistance.