Denon AVR-2105 Repair - no display or output 

Great video. Loved the scientific process of elimination.

Dave you did what many don't. You cut the cable tie flush. Auto electricians and others leave them a little long but you can get cuts on fingers if one pushes past. I have a Denon AVR2113 with a blown HRC fuse. Better as a mirror now like your one. Unfortunately a 400v line had fallen onto the 230v feed to the house where it is used. The amp was on standby and several 1N4007 diodes on the SMPS PCB were taken out. Once replaced the amp is functional again. The HRC fuse saved the day as there are many 80 pin ICs in the unit. Thanks again.

Love this and clearly you are very happy with yourself 🙂

This is great Dave!

I'm from Brazil, amazing your job, thanks for share.

Very informative, thank you!

Nice work!

Good work.

You are amazing! A++

Thanku so much for your service I like it 🙏🙏

u do great work

thanks to u i fix my marantz

Gracias por su Aporte excelente tutorial

Good job

Good video 🔝

Thank you for sharing...now I know

Thanks for sharing your akbowledge. Maybe you know if the original wifi/bluetooth antenna in the back of denon recievers are replaceable by any other wifi antenna? :)

Hello friend, a pleasure to greet you, I live in the Dominican Republic. I have a denon avr x1000. The music sounds good after 1 minute. It sounds like bad. You can tell me that he is a brother.

@Eclectronics greetings from Sweden! Your video is the closest I have come to understa d what is wrong with my Denon AVR-1905. It worked in the morning, but after a faulty toaster caused the Residual Current Circuit Breaker to cut the power at lunchtime, the receiver din't work in the evening - I guess these to events could be linked. The unit does not start up at all. No lights/display, no sound and no startup-buzz. Totally dead - but the fuse is ok! Any ideas how to go forward? Or is it fried? Thanks for a great channel, I've learned a lot! 👍

What I liked is the eventual repair. What I didn't like was the ugly modification. As a owner I would be greatly upset if this would be done without my advance permission. I always seek as original as possible in all repairs. Sure, the rectifier was of a higher value but, still.

Good 🎥 Sr ing..

Hey! I have a similar problem and I am reading an open between negative DC and AC terminals. Does that sound indicative of my rectifier needing replaced?

Nice video. Could you possibly point me in the right direction for the following problem: I have a Denon X4200W, it no longer outputs any video or sound. All the other functions seem to be working fine. I can hear the relays clicking for the main power, relays clicking when plugging in headphones. I can connect to it over the network and change settings, see that I'm playing music through bluetooth, etc. I tried to find someone with the same problem and maybe find a solution that way but I was unable to. Any idea where this problem could be coming from and where to start looking. Greatly appreciated for any suggestions.

I have a Pioneer Receiver VSX 823-K and there is no video output at all from any of the inputs. I can hear audio though. Any thoughts ?

Super sir

Nice details and good job. I have a denon that have a strange problem. I was searching all over the internet and i didn’t find any solution. When i press the buttons, the tone control for example, it will open the tuner or if i press cd input, it will not respond or it will give me the tape input and so on. The remote control is acting the same. Can you have any ideea ? I have an Denon AVR 1601 model. Thank you.

Respekt !!!

that was good but why didn't you clean the dust

Hello sir. Could you help with mine. I have AVR 1705 almost identical pcbs with yours. When i turn on its flashing red then it goes solid green but without any relay click and no image in front panel. Front leds working. But not the screen. I ve checked all the power transistors, all relays fuses power transformer cables and capacitors. Also all diodes. Its just go green with no click and no screen but its responting to remote control. Thanks in advance!

Hi, Interesting stuff you do... I am a bit like this but.. I have a 24 year old Denon D-UTF88 system in mint condition, but I think I have inadvertently damaged the system inter-connect function. This probably whilst trying to replug it to make all the units respond to the handset.. The cables are 3.5mm stereo-like connectors which allow the handset, via the main amp, to control the tuner, CD and cassette. This no longer works, it did!, so suspect it may be blown transistors on the outputs. I have the full Circuit diagrams for each part, and there appear to be a NPN/PNP pair, plus one, on the outputs.. Do you have any knowledge of this as to what the fault may be. I am tempted to try a repair but dont want to proceed without some idea of what it is.. In all other ways the system is working fine, well, aster replacing both the CD and cassette rubber drive belts which had 'relaxed' too much! Cheers Paddy

Hello, nice video. I have denon avr 1404, I have no dispkay on. The button is ok. The relays inside the supply board do not switch on. What could be the problem? Best regards.

Hello sir, I have model 1804... very good build, but when i touch ac rails from rectifiers it shows open.. also when I touch middle ground with ac rails it shows open only one shows some resistance... I disconected receiver cable from power and measure it, are my rectifiers gone open??

Hello, thought I would take a chance here. I have the Denon AVR-587 very similar on the inside. in my case doesn't even turn on, I don't hear any relays clicking and then I tried to connect a table lamp to the back panel power AC outlet, so nothing so power isn't flowing even to the near by AC outlet on the back. So clearly not getting passed the very first few inches of circuit from the AC cord. I checked for broken solder joints and even the first relay, the two fuses. So frustrated.

i have a denon avr 4306 same issue where can i locate a schematic for repair?

Hi sir please can you help me I have Denon AVR 1603 the problem is only the standby light is coming on but nothing else is working

I am facing problem on my denon avr 3808.......there is very little distortion coming from center channel only when kept on standby mode.........during watching movies it makes very little distortion at high pitch voice.......it is confirmed to be denon not center speaker........so whats troubling my denon .....? Plz guide

How to identify which IC control the volume on denon avr? Please reply

my denon.. avr 887... just yesterday... stoped playing audio... and some times won't even want to increase volume... no sound comes out of any channel... it doesn't go in to safety ... I don't know what happened....

Gracius,now come to NZ & fix mine

Hello there thanks for posting this kind of videos, can you help me with somenthing, i got a denon avr1100w and now it got a pixels on the image show in the tv, do you think it might be a software problem? I havent find any firmware for this unit. Thanks for your answer and greetings from Peru

Very nice troubleshooting video. I have a Denon AVR 1802 that stays on Standby and does not power up. I tried factory reset holding Spkr A+B and plugged in the AC power, the display flashed, and then the LEDs stayed on for Spkr A, B, Auto, PCM, DTS, Digital, and dts; it still does not power up. During display flashed, some clicking sound were heard. I measured the rectifiers on the board, and both have ~ 0.5V values. Is there something else I need to do? Thank you.

Can you help? I have a simular problem when i plug in the high voltage. But if i unplug it, everything but the sound works..

Hello friend, I have a problem with my Denon 864, it turns on, but the relays don't arm, and the display doesn't turn on, could you help me?

Semms great.. Hi, am raja. I have Yamaha RX-A1060 av receiver... Suddenly going into protection mode.. I have checked amplifier dc circuit voltage seems fine. Can you advise some tips? I don't have service manual also can't find out

supa tanx

I have a Denon AVR 1910,my problem is after switching on the receiver works for 15 minutes to 30 minutes after that receiver not outputting any sound but display shows sound dtshd or truehd or source sound. can you tell me what is the problem? same happens when receiver in tuner mode also( but when I change to "direct" sound is restored but when I change sound mode to stereo or Dolby music or another mode ,sound output stops again- in tune mode only).kindly give me solution for the problem.

Thanks for sharing, I have video out issue with Denon AVR1612, power/standby button blinks all the time but after few attempts power gets on, Audio seems perfect but no video at all even AVR menu is also not displaying, can you help please? I am from India,

Yes music

Working on a similar model that had a drink spilled right on the transformer area. Was very informative for a pre tear down learn. Edit: I got lucky. Cleaned off the solidified cocktail that had been spilt on the transformer area, and around the front power button area with isopropyl and cotton swabs.... power on! Wooop woop. Just goes to show, sometimes cleaning off 10 years of goop may solve problems without even getting your iron hot. :-b

Hello sir .My denon avr 2307 is no sound pls help me

I have a denon avr-x4100w powers up but no sound or video fuses all good any ideas?

can it be a fuse if over driven with that familiar smell and protection mode constant .I ran it with one channel open circuit AVR2000 denon.? What a loose banana l am , but you should hear my mixing ear. Blows you away .

My denon 1603 prologic and 5 channel not working. But stereo and external working. Can you please help where is the problem

Hi friend My avr denon 3310 power is on but display not working, audio output not coming you have help me?

if you run it over an Isolation transformer, which is not needed it has a transformer of its own so it is Galvanicly separated, but if you really want isolation ok, but then Ground it and defeat that isolation really makes no sense to me . The reason you use Isolation in the first place is so that when you hook up Oscilosciope that you dont make a Ground loop with phase when you check phase , or something , when you ground it you practically defeat that and back to square one it is . So i dont understand why do it .

I have a Denon x5200 it's powering on and off then completely off with no lights! I tried disconnecting speakers 2 at a time, still turned off, then I disconnected all speakers, still turned off. Then I reset the unit and it still turned off but after a few tries it stayed on. Decided to make connections and it's turning off completely, no stand by light either.

Hello sir iam one of your subscriber I am using denon avr 3805 few days before the system is not in working condition power on few second it will go off mode what is the main problem

Test music- on the silent wings of freedom

A bit silly putting 2 bridges in parallel. The one with lowest forward voltage drop will take all the current.

Buenas tardes tengo un recibidor Denon 788 pero no prende la pantalla

haiplease help me. how i can get new volume knob.(master volume &select/enter ) if you know any online web .same model amp1707 .ifany idea please sent email .thank u

do you sell mcu denon avr 1311, toshiba T5CN5. Im from indonesia

Il est bon

OMG why would you not take that outside and blow all the crap out of it? I was given this same amp from a friend and just lately it blew what is supposed to be a 6.3 amp fuse that was a 7 amp 240 volt...

Prende la luz roja y luego verde pero la pantalla no

Can u help me to. No display and no sound.

denon avr 1707

Mi dennon no toca nomas truena

Alguien que me ayude

Denon: Bridge rectifiers in parallel???? That's a bad design decision. Even with matched pairing there will be overloading of the weakest diode in this construction.

Je parle français

No anglais

Why you do not clean proper before you start working on the device?? Will look more profesional!!

bad service made gambiarra

always go 3000,4000,5000 series ONLY for the GOOD DENNON amps(higher models as well).........1000,2000,svr etc series......all cheap crap.....

My Denon 3806 will not turn on or anything at all. Idiots don't know how to box items when they ship! 3806 is a nice unit, I'd spend the money to have it fixed, Denon new stuff is garbage build quality.