Seriously, great lesson in trouble shooting here. Amazing, one little resistor took the whole thing down. I wonder how many hit the landfill for a few pennies part?
You are indeed the man! Thanks for fixing this, I cant wait to get it back in operation. For info, I paid $1400 and tax for the AVR in Dec 2013, its been sitting in its box in my basement for almost 4 years. I had the urge to throw it out every time I saw that box.
@@DaveSkeard I knew it was a pricey unit. Glad I could get this one going again. At least it wasn't a digital board, as the story would have been different but power supplies are always repairable. This is like that Linn receiver I worked on last year, except that piece was over 5,000.00! On that one, a failed SME cap failed in the power supply.
@Dave Skeard I’m so glad you were able to get it repaired, I’m curious if you don’t mind, how long did you have it before it stopped working? That would have just driven me absolutely insane to pay so much for a receiver and then have it crap out on me.
Smashing job dave, i bet you were wearing a deer stalkers hat while tracking that sneaky devil down :-D That really is a beast, thankfully it wasn't the horrible digital side. I was expecting dead output capacitors or diodes, that 1 meg resistor was a supprise.
Multi channel. More complicated. Enjoyed the video!! You have the patience of a saint. Only 0.3+ milliamps to burn up that resistor. Correct? Based on 1/8 watt on 1 megohms. Well, that would take over 300 volts, I think. The calculation I used online might be wrong. If you provided the voltage across the resistor, it might be more accurate. At 5 volts, 0.25 amps, I think.
The company I work for does AV Integration and I have a few of these AVRs we replaced that is too old for credit/return so I brought them home. They're honestly easy to fix, about 90% of the time it is a Power Supply issue. the 10% is a blown power Transistor or something in the speaker protection circuit. From my findings that 1meg resistor should be a larger wattage. that 1 meg you replaced looked like what a 1/8 watt? I think the one I repaired last year I used a 1/2 watt (all I had in stock), I could of gotten away with a 1/4 watt. I had thought it was the glue as well but sticking the meter probes into it didn't give me any readings unlike the super old stuff from the 70's early 90's that reads anywhere from 10K to a few Megs. Those AVR receivers from Denon and Onkyo are bad ass and too much to keep track of. Some models even have more bells and whistles and some have less. I deployed an Onkyo a while back that had a built in 4x2 Video Matrix. I'm trying to get the boss to let us do more Denon receivers since we typically deploy HEOS amps and integrate with Alexa. Strange that Onkyo/Pionner hasn't gone that pass yet.
hi 12volt guy; just wanted to say thanks for the channel. I'm retired a year now so I've indulged in my passion for tinkering on the bench repairing old stereo gear. I get lots of enjoyment watching your vids, some good tips as well.
I missed the resistor the first go around because there was about 2.5v on the IC side which is generally about what should be there, so I didn't pull it, and of course measuring a 1m resistor in circuit is going to give a false reading. I started checking other components and it kept pointing back to that startup bias resistor, and sure enough after pulling it, that was the fault. Caused no doubly by the circuit glue going conductive.
Outstanding work! That is the way it should be done. Thanks for sharing. Denon's tend to be interesting equipment. I own several of them and my favorite is an old AVR-5700 (46 lbs) that was the worlds first Ultra THX receiver which works perfectly (after simply re-flowing some solder connections to some audio pins). Great video!
I love this amp I have Denon AVR1100 and I am really happy with it another tip you can remove this glue if you apply Aceton this can help losing thing out by the way nice video keep do more Mido from Germany
Reason why i often think twice people come ask me to look at this kind of kit. Worse thing is they expect a cheap repair job as in oh i'll get you some beers for the work kind of cheap.... i suppose they think since i aint running a repair shop then they don't need to pay actual money. Thanks for showing us this things repair though.
Denon's are typically known for good OSD on screen menu system (1080p overlayed) which is why I chose mine. Without a remote and a TV pretty much forget about setting these things up. And pray and hope the HDMI board doesn't die which is also very typical of Denon.
Glad youtube suggested your channel. I like to watch repairs, but most people don't explain what they are doing or they are just annoying (political, constantly sarcastic, etc.) Thanks.
I have denon avr 4520 and no audio from all digital inputs. Stereo direct from analog in works. Does anybody know where Can i Look for problem? When I turn digital input my speaker icons and Dolby sign on display are blinking. I bought new DSP board but nothing has change. Please, help. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-WmkvoIVuq1c.html
I find that glue in the newer equipment is much more benign that the stuff they used in the past. Or maybe, it just hasn't had all the time to turn corrosive/conductive yet...
Had a fancy ultrasonic humidifier that occasionally wouldn't power up. SMPS had expected voltages on the filter cap. Then I noticed when it was plugged in, there was a slight fizzing noise and actual bubbles coming from under the transformer! It had humidified it's own power supply and some kind of electrolysis was going on. Not enough to cause a short but it killed the output. Once it dried out it worked. In this case, liberal application of hot snot solved the problem.
Outstanding video! Great work. The AVR-X4000 came out in 2013 (had a 3 year warranty from Denon) and cost US $1300 new. Rated 125W/ch X7 into 8 ohms 20-20K 0.05%THD. (Heh, my old 2 channel JVC has a transformer that big). They still command US $900. Looks like it can do just about everything. I have a Denon AVR-1713 from the same year. Still working fine, but it doesn't see that much use.
Hi Dave, I just had a chance to watch this and had to let you know what a nice job you did on this one. Fine job! Kills me that as complicated a hunk of equipment like this one is, that it can be totally shut down by a 2¢ resistor. (If it even costs that much) This was fun to watch, thank you for your expertise! Buddy
It has gone downhill quite a bit. I did screening rooms for celebrity clients, and used a lot of Denon units. The early ones (pre-HDMI) still worked in audio, but when some rooms used them to switch video as well I had to upgrade them. The newer ones had about a 5-10% defect or failure rate, one was even non-functional right out of the box. (It would power up but had no video or audio output at all.) I used only the line level audio outs, feeding into a professional cinema processor, only once did I use the Zone 2 speaker outputs for sound in the "lobby".
@@mxslick50 I agree. I'm also not too keen on Onkyo, especially after its acquisition by Gibson. I guess that leaves Yamaha as a choice for reasonably decent mid-fi if you're buying new equipment.
@@mxslick50 Sad to hear this. I have a Denon AVR85 that I bought in 1998, after my Onkyo A7090 completely fried. It still sounds wonderful, and never a bit of trouble with it. It does tend to run a bit hot at loud volumes, but a $10 8" fan blowing across the top took care of that concern (dropped the temp by 30 degrees).
Good diagnose/repair video. One thing I noticed during the video, after 38:00 - 38:06 there is a voice overlayed over yours while your mentioning the glue! Very strange and just thought to share.
Thanks. Nicely done. You've done a nice job troubleshooting and showing your process, I have a Denon and my surround speakers play at low volume compared to typical. One day...
We were warranty repair for these and the like. The thing we didn't like is that these companies sent the repair manual, but not the owner's manual. No instructions on how to operate these things in the repair manual.
I have the 2018 version of this model (Marantz SR7012) Which is the sister model of the Denon X4400H. It has even more outputs and functionality today! Thicker heatsink and 2 cooling fans... It's extremely crowded in there! And if it stops working I'm going straight to that resistor, lol... 5 cent repair job. :) Imagine how many people throw these things out when all it would take is a cheap part and a soldering iron... We pay for knowledge not for work.
Clean the glue. I used to piss off customers at the shop I worked at when they wanted a detailed break down of work performed. The conversation generally went something like this. "You charged 120.00 to replace a 3.00 transistor and a 50 cent resistor. I'm not paying 120.00 for something that took you 10 minutes to do." I got out my invoice, and wrote the following. Transistor 3.00 Resistor 0.50 Labour to change transistor 8.00 Labour to replace resistor 2.00 Labour to open and close cabinet 10.00. KNOWING WHICH TRANSISTOR AND RESISTOR TO REPLACE 100.00! Got them every time.
Even an RS-232 lol it's not missing any inputs that's for sure. Another great video and nice to know about that board glue stuff turning rogue on us with time.
I love my Denon AVR-3300, which is pre-HDMI. Still works great, and sounds fantastic. Have replaced the cooling fan, and main power capacitors through the years.
Thanks great video. As for these A/V receivers, I think they are better as door stops. I had one of the Pioneers and wanted to adjust the tone control just a little bit. Manual wanted me to first eq my room, then set up a series of curves based on my preferences, etc. Instead I called a friend up on the phone and asked him if he wanted a new Pioneer A/V receiver for free. I was glad to get rid of it.
Have Denon 3801, similar functionality no Hi main out, no HDMI, with Pre-out, and still need remote control to access a lot of the functions, also Masters Degree. My had out transistors blown on surround channels - previous owner had run it quite hard. And most of the receivers don't have enough heatsink to support all channels running, with parts packed like sardines inside the can - harder and harder to service the damn things. At least the one you got on the bench is more tech friendly - more accessible boards. Thanks for video - learned something new again👍
I have recently obtained an older denon av receiver. The receiver turns on standby light is solid red, pressing the standby button, it blinks green, i hear 2 relays clicking and the receiver shuts down, standby blinks fast red. Im looking for someone that can repair, any suggestions? I can likely repair myself if i can find blown component but im not 100% sure on how to troubleshoot.
Paul Ramos I thought he was creating new cold solder joints and it appeared the solder was not flowing properly and wetting/adhering to the board and components.
I was about to ask why this thing justified the repair money + two way postage cost, then I saw the gazillion input/outputs on the back. at least a $300+ amp, and of course a lot more to buy one from new.
I have a denon avr x2000 I would like fixed. It goes into protection if turned up to -35db or something drawing a lot of current comes on the same circuit like a vacuum.
Thank you for this video. This seemed like a very complex diagnoses with a very simple repair. I just wish I was as knowledgeable as you, so I could repair my Denon AVR-5800 with the same symptoms, but probably a different problem due to the complexity of these units.
Ihave reciever yamaha rxv800 .protec is problem.& denon 1311 is blinking red ..any reset manual is ok normal ,but,the power off ,back is blinking red again ...( give my solusion)
Hello! I have the same receiver, its working fine, BUT the buttons in the front are not responsive. Its not like I have used the amp from the buttons, 99% I have used the control, but the buttons in front don't help navigate/toggle through the menu/settings. Any Idea what could be the issue? The amp has never had any problems. Where I live, we do get power fluctuations, now and then.
I have the same unit. Gladly, I have yet to have any issue(s) with it. I'm happy to see this video so I can see the complexity of the circuits. It would be well out of my ability
Great find! I love watching you fix stuff! I looked up this beast, yeah...I understand why it was worth it to keep. 9.2 surround 4k, bluetooth, 125watts! LOL, That's a frickin beast! Thanks again for another great fix video. I don't know why your only at 60k subscribers with the amount of knowledge and videos on your channel. And you list the product number in the title so people can specifically find something similar. I really like what you do here, never quit saving the landfill from things that only need some work to be used once again. I also have found simple failures save friends equipment, I just saved a poor abused Fluke meter for a friend, half screen, no voltage readings. He now has his first meter back and looking/working like new. It's very satisfying to fix things, there is no doubt about that.
I hate that circuit glue stuff too, I had a LED TV that where the glue was, the components heated up underneath it and caught fire. It damaged the board, I couldn't find a replacement board. It was in the audio circuit power coming into it. The amp had quit working. It was surface mount components that burned to a crisp.
I have a sky bell camera that was donated by a viewer that was burnt to a crisp. You haven't seen the video because I didnt fix it, but perhaps I will post my findings. I am hopeful that I might get it going but realistically it probably will never work. Was blown when a lightning strike was close by.
This was the second unit I saw where the medium they used to insulate the chip has over time become conductive and shorted the unit. It is something to look for on all electronics. The last one I witnessed was covered in the media and required alot of cleaning and removing the reactive media. I have not run across the issue but then again, I do not work on this stuff as often. I learned a lot from you today. I know just enough to be dangerous somedays. I love a good challenge. Its like being a crime detective for a murder mystery. Who done it is usually time and age.
They zip tie guy is ok it the freeking glue they used and should have known from past adhesives that it shorts after a few years. Everything is made to break or they would go out of business. Look at 10k hour less going out after a few hours. Great job.
When i replace my x4000 in the future i will make sure that model is not designed in america but made in china or i switch to another brand considering when i bought it in 2012 it cost me £1200 but the poor quality or workmanship in the soldiering and so on is a shock to for system 9 years later lol
May be he turned certain inputs off that he don't use the denon switches off imputs to help prevent internal interference. On my one i have blu-ray input on rest off
How much voltage drops across the 1 meg? There is a maximum voltage drop allowed across a resistor and breakdown can occur that has nothing to do with wattage. Its usually safer to put two in series.
Hi. I got a chance to buy used Denon AVR-S930H Receiver (what price worth to buy? I'm worry if Denon won't keep up with Yamaha even with Atmos-DTS-X features. Features are good but more important is sound quality. Should i stick with Yamaha and look for newer models? Will Onkyo do better job too compared to Denon? I heard Denon's are cheaper and less reliable compared to Yamaha and Onkyo. Any opinion? Thanks.
My equipment is so old. I barely have Dolby digital. I have no opinion on any of the new formats because i don't have any. I am using an old Onkyo 7.1 channel receiver but with only 5 speakers. My sub doesn't even do much these days.
Awesome 👌 seeing you trouble shoot used to work for VV and Sons dubai repairing these amplifiers in 1996..big headache to open and repair...no proper servicing facility....
Such a stupid resistor (or maybe together with the glue) has caused all these expensive AV receiver to die!!! Most of the people that suffer this lack of quality control or bad design from Denon will be buying a new receiver for maybe $1000 or more just because a failure in a 1 cent component !!! Not good. I have seen many videos about failures on Denon AVRs. What’s wrong with them?
My Denon avr receiver has a problem the left speaker keeps going off and on. When I touch or press the left terminals on the back of the receiver it comes on temporarily and then it will go out again. Any idea of what could be wrong?
Very instructive and enjoyable to watch too - thankyou! I have a different problem with my AVR-X3400H - all sound just suddenly quit in mid-sentence while streaming (otherwise the video continued playing normally); same from any source, won't even play the test tones. So something 'common' in directing signals to the outputs (or a common output stage power supply maybe?) It's knowing 'where to look' - I can diagnose electronics, but not working in this particular field, working without schematics is a challenge. Any tips would be most appreciated on what area I should be looking at.
Hello .. I have the same avr denon x4000 and im facing a problem where i dont have an output image .. my problem seems in the hdmi outs .. would you please support me with the whole hdmi in and out unit model name for me to buy and replace it .. or if you have anything in mind that i can try .. thanks
I am being taken to court because I could not fix a client's receiver. I cannot open the enclosure because of one stuck screw. I tried to remove the faceplate on the front panel as a result in order to get in there and replace the burned out light bulbs for the dial indicator. In the process, a metal bracket holding the tuning dial came loose and the dial is not functional. If I could have removed the enclosure, then I could have fixed the dial. I did not break it; it is just that by unscrewing screws on the Merantz receiver, the bracket came loose. He told me angrily that I should go out of business and not advertise. I told him to get a lawyer. Very upsetting! Has anything like this happened to you?
Nope, because I do not guarantee that I will be able to fix anything at all. I will look at it, and make a decision as to if I want to peruse it of wash my hands. Many times I refuse to repair things. Like camcorders with all those leaky caps. I won't touch them I will offer to transfer their tapes to digital. I am not in the repair business. Have not been since 2003.
@@12voltvids Thanks. My angry client just sent me an email full of everything that he is going to do to get revenge in me. I replied to him that I did not break his receiver, and to be forgiving and full of joy instead of angry as I am because I am a Christian. That is the truth.
Not multi channel av receivers. Just 2 channel. Those multi channel dsp receivers are very complex and just about anything can put them into protection. Just like the vintage repair shops i stick to stuff that can actually be repaired.
lol I appreciate and enjoy your first cut no editing, especially the "how the hell do i....oh screw it!" parts. Also get a laugh at the quick flip of wanting to throw it out the window to wanting one yourself after checking out the back panel hehe. Great work tho bud! This is exactly what I enjoy doing most in my spare time. I purchase what were once $1000 and over AVRs off C.L. for $20, then open then up, clean it up and make some mods, and keep it out of a landfill
@@12voltvids hey just came across ur video cause I also have a denon x4400h that doesn't work mine does power on shuts off after a min and says please wait brought to repair place they said needs a digital board replacment but quoted me 900 dollars which is absurd but I am not savvy and dont know what a digital board is or how to find one
@@brad7290 What about the warranty? The X4400 is only a year old. D+M have 2-3 year warranties depending on which country you are from. - Unless you bought a refurbished unit.
@@12voltvids I have a denon 4300h. I was listening to music and out of no where a speaker blows and I see a little smoke come from center of receiver. It’s in open space. Now it boots up but turns off with a red blinking light… any thoughts?
Good job . The only thing i guess you didn't check Power RELAY on power board. Why? Power Relays should be checked at first. Maybe you did witout camera. So how did you know that wasn't power Relay?
I just fixed one with Power Relay problem but instead replacing it i just adjusted hight of contact by plastic shim. It works OK. Do you thing it'll last? Will it make problem even biger? Thanks.
