Denon AVR-X4200W repair, red blinking light fix
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- Опубліковано 10 лют 2025
- I picked up this fairly new, high end receiver from a thrift store for $25. When plugged in it would turn on and shut itself off after about 5 seconds, and the standby light would blink. You could turn it back on as many times as you like, and it would always shut itself down. This is a power protection feature of the receiver so it doesn't fry itself or anything hooked up to it.
There are several other youtube videos of people fixing the various problems in the receivers, and I watched several of them to get an idea on how to proceed.
I purchased the replacement transistor at digikey.com
** Additional Info: If you have the same issue, check the two resistors that come off the emitter leg of the transistor you're replacing! Mine were open and the audio from that channel was very weak and scratchy. Replacing those resistors fixed it. Order everything you need at one time**
You are my man, friend. Thanks to you I already fixed a AVR-3313 with same issue.
Hi, great video. I have a question, the red wire in the power supply board is 3.3v? because im not getting any voltage on it. (Its marked as MAINPOWER on the side)
How important is being able to have DLBC?
Some three and two pin white plastic clips for wires connecting boards will not release making removal of the output transistors difficult. Wires that are soldered in with a plastic lug on top ? How , why ?
got this receiver just got the blinking light. checked all the transistors all good any other ideas?
Where did you get the new B1647 transistor? And how hard to get that entire power board out. Looks like there are a few screws on the bottom of the unit, and 2 or 3 on each side to take out?
From digikey. The power board wasn't too bad. Disconnect all of the wire connectors and yes, maybe 4 screws from underneath? It was pretty straight forward.
@@ajvpb1 thank u sir.. will try this.
Hiya Buddy I have a Denon X4100W which seems to gives a buzzing sound from my speakers. Iv changed the amp over to another amp and still same issue. It seems. To give a distortion right in the mids and a hissing sound but only at certain frequencies. Iv changed CD player interconnects.. Speaker cables to no avail any idea. Speakers are only few years old mission SX2. Would you discribe this as a amp issue which is only 5 years old or more of a speaker issue thank you from London UK 🇬🇧
It sounds like you've done a good job troubleshooting and isolating. Am I reading correctly that you tried an entirely different amp? If so, it sounds like the speakers are the only common denominator. The only other thing I can think of would be a ground loop. Do a quick google search on those and see if it matches your problems.
@@ajvpb1 Hi and thank you for your kind reply. It's quite odd. I can play anything from the TV in souround sound 5.1 and play plenty of CDs and SACD's from my Marantz and it still manages to play with plenty of detials vocals sound almost perfect and clear. When nothing is playing it's almost dead silent hardly any hiss coming from the speakers. I'm. Using a pretty descent mains surge /conditioner by Isotek Siris 3 also using pretty decent Merlin mains cables. These mission speakers were flagship around 2013 but I brought them 2 years ago and they are by far the best Iv ever owned I just don't get this fault all of the sudden. By your own experience would this be more speaker fault rather than an amp fault.. All help is very much appreciated ☺️ 👍
@@marcdavis8842 I think the only way to know for sure if it's the speakers is to try a different speaker on one channel. If the new one isn't hissing while the old one is, there ya go. If the hiss remains then you at least know its not the speakers
@@ajvpb1 Hi thank you. Yes listening to it now best way I can discribe the fault it sounds like listening to an album on a badly scratchd record. So bottom end bass will sound absolutely fine and the very high frequencys sound almost crisp. You can get an quite peaces playing and you won't even no theirs a fault then as soon as you start to get more instruments played more mids being used that's when you can here the fault more. Will give your idea some more thoughts 👍🤔
Try this first:
www.amazon.com/gp/product/B000BCDQ44/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
OR
www.amazon.com/gp/product/B07LF4FRQZ/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
When you do the test and the results are 0L on both pins. If while doing that test you get a reading on 1 pin is it faulty?
My Denon avr 3808 is sometime giving video out but sometime goes blank ......no protection mode.......no red light blinking.......what should I do....?
I have limited experience with video issues. Try a different hdmi cable or port. There was a problem around 10 years ago with the hdmi chips of all receiver brands. If its intermittent a new hdmi board or better yet, a new receiver without those issues is probably the easiest fix. There are some fixes you can try with the hdmi chip (heating it up with different methods) but those are temporary at best.
What if the red doesn't come on? Mine had the flashing light when I turned it off but it would stop flashing and go back to normal. Now it's off and I can't turn it on.
Check the fuses on your smps, which is the little power supply board that attaches to the electrical cord. If those are good, check the dc output voltages that go from the smps to the hdmi board. It should be a 5 wire connector.
@@ajvpb1 Okay. I should have stated that mine is an AVR X5200W. Shouldn't be much different, just more channels. The fuse by the way is good on the smps board, that was the first thing I did. I just changed the transistor on it because I thought it was bad but turned out to be fine. Does the board show what the voltages should be? Also do I have to turn it on because that's the problem, no red standby light and won't power on. Thanks for the help too.
@@anthonywilliams7432 Printed on the backside of the smps and/or where it plugs in the voltages are listed. If my memory is right 2 are ground, 2 are 5v, and then the other one is voltage that comes back from the cpu to trigger the smps relay to close and power everything else up. See what you have and start tracing it to see where it gets stopped/shorted to ground. You should get 5 volts out when its plugged in, no lights. Test it with the hdmi board connector both disconnected and connected. I recently messed with one that had this, report back what you find.
@@ajvpb1 we'll do thank you
@@ajvpb1 Okay so mine has 6 wires and when connected 3 out of the 6 has voltage, however the voltage fluctuates from 4.6 to 3.6 and then back to 4.6. It never stabilizes. Now when I disconnected it from the hdmi board the voltage is stable. 4.6 vdc
What about the smaller transistor between the 2 bigger ones.
That was fine, but you can test it with the same method. The 2 larger resistors on the output leg of the shorted transistor were blown too. I'd test everything around it to make sure nothing else was taken out.
Probably a dumb question but did you have to buy more thermal paste or what did you do?
I had some cheap thermal paste laying around so I just put a fresh dab down. The old stuff was still soft so you could probably reuse it in a pinch.
@@ajvpb1 ok. Thanks. Hopefully the old stuff still will work since lots of places are closed now. Plus since radio shack no longer exists.
Do you have any idea which speaker that transistor ran? My bad resistor was number 9 as well and I got the AVR to turn back on, however my center channel distorts really bad. Possible a bad solder job if it 9 runs the center channel?
@@JasonBohl Yep, it was the center channel. I had the same problem. If you read my description there is a resistor right in line with the emitter leg of the transistor that needs replacing too. You can read the color code from yours, but if its anything like mine is a larger green one. I think it was 2w metal oxide, 0.47 ohm
@@ajvpb1 Thanks a lot man!!! Ill have to pick one of those up next. Sounds comes out but very crappy. Thanks for the fast response. Got it soldered lastnight and plugged in just now but very crappy sound. So Ill try that next.
was that by coincidence the 9th transistor counting from left to right?
Mine is a JVC theater dvd player. Has red light on, on standby. Push it and truns off, right off.
Unfortunately I don't know much about those. The power supply board would be where I'd start with a multimeter and verify proper voltages and if they're off work backwards from there. Sorry I don't have any specifics