Yamaha v3900
One of the best receivers Yamaha have made to date but it's a bit of a shame that the media player is audio only and there is no THX like its bigger brothers. With its amber fluorescent display and solid brushed-aluminium front panel the RX-V is as unmistakably-Yamaha as the brawny beast of an AV receiver lurking behind it. And given that it can deliver nigh-on W RMS to each of its seven channels, I'm talking pretty serious brawn here. No wonder, then, that the is so heavy. That means an enormous mains transformer, which is clearly-visible through the ventilation slots.
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- Yamaha RX-V3900 manual
- Yamaha RX-V3900 input/output question
- Networking - to Yamaha RX-V3900 - Help PLEASE!
- Controlling Yamaha RX-V3900 (Noob question)
- Media Server seeing triple on Yamaha RX-V3900
- Yamaha RX-V3900 User Guide
- Yamaha rx v3900 problems
- Yamaha RX-V3900
- רסיבר YAMAHA RX-V3900
- Yamaha rx v3900
Yamaha RX-V3900 manual
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Print Search. Pages: [ 1 ] Go Down. Author Topic: Yamaha rx-v Read times. When I tested the outputs that the protection monitors, I get the following values Q20 5.
It seems that the outputs on Q21 and Q22 is a bit low, but I am not sure what the tolerance is. Is it likely that the transistors are faulty? Is there other areas that I should look at? Please provide a link to the schematic you are refering to The voltages you measured seem within tolerance. Until we look at the schematic Thanks for the reply. I have attached the schematic and block diagrams for the outputs. I also measured the output of D20 and they were Quote from: pwkwong on August 23, , am.
This from page 74 of service manual. I'm betting on a bad V regulator IC. So it seems that Q22 is bad, or could there be something in the circuit that is pulling the voltage down? Is there are a way to check the ICs or just replaced and recheck voltages?
The voltages don't seem so far off. If you continue to hold down the buttons for several seconds at power up it will go into protection cancel mode, one of the front panel indicators will flash don't remember which and you can take voltage readings at your leisure.
If all the power supply voltages are good, there could possibly be a bad summing resistor. Pretty rare, but I have seen it.
It appears that the voltages are monitored via a voltage summation circuit through the resistors you mentioned. I also measured the ps1 voltage and it was 1. Look like the next step is to remove the board and measure the summing resistors, as the resistors are SMDs on the bottom side of the board.
So do I need to desolder the resistors or can they be measured in circuit? There is another possibility. It may be possible to use an external power supply and a resistor to force the DC PRT line up or down as required to keep the DC value in range. If the receiver still shuts down - it could be a bad gate input on the microprocessor. Once again - rare, but I have seen it happen on other models that is - I work on lots of receivers.
I managed to removed the board and measured the summing resistors. I am not sure what to make of the results as it does not match the values. However, I suspect it is because the resistors are in circuit and other components are affect the resistance readings. When I looked at this thread, there was something very familiar about it. Looking at the schematics, it became even more familiar! Dave took on the repair of a different Yamaha receiver that didn't want to power up and was led in circles until some people pointed out a common fault: C in that one, it's C4 in this one.
Here's that vid: EEVblog It seems that this receiver has the same circuit, so my tip before you continue: take out C4 and measure to see if it still is within spec. Hi jitter, thanks for the reply. It seems that the symptoms are a bit different. I can get it to switch on and access the diagnostic mode, but the protection circuitry is shutting it down if I don't bypass it. I can also access the noise generation function in the diagnostic mode and test all the amp channels.
Please don't make assumptions, test C4 anyway to be sure. Highish ripple may lead to different symptons yet have the same cause, it is a different model, after all. If it turns out fine, then hey, no harm done. But you will or at least if you find, after spending a lot more time, that it was the cause all along Just a friendly tip from someone who learnt that the hard way The capacitor in Dave's dumpster dive was a completely different issue and does not relate in any way to this person's problem.
Quote from: jitter on September 05, , am. Hi, Just an update. As my old soldering iron wasn't hot enough to for lead free solder, and as I am still waiting for my hot air gun to be delivered, I end up soldering a normal metal film resistor 47k in parallel with R As R47 is a SMD, I end up soldering onto a couple of jumpers on top of the board, which wasn't pretty. Anyway, I reinstalled the board and the switched the AVR on I measured the voltages again and it was the same, except for the PRV voltage which is now 1.
So it seems that the summing resistor had gone high. I ran the amp for an hour on radio and it seems to be ok. I guess to be sure I should remove R47 and measure the resistance. Thanks mzacharias for the pointer to the summing resistors, you definitely know your stuff.
How come you don't put any more videos on youtube? Hello everyone.. I have a rx-v receiver with similar symptoms. Do you think that could be the solution to my problem? Quote from: redboy on November 14, , am.
The following users thanked this post: redboy Quote from: mzacharias on November 15, , pm. This particular model Yamaha is much more difficult to troubleshoot.
I've fixed a couple but Anyway, I hope you have a 'scope to look at the output of each channel output to look for distortion, premature clipping, etc as volume is increased. Do measure the resistance of each speaker connector from positive to negative while the unit is OFF. Rarely there is a shorted or leaky. On page of the service manual there is transistor Q which is the over-current trigger.
Each amp channel has a transistor such as Q which would trigger it in the event of an over-current situation. In theory, one should be able to determine which channel is triggering the protect.
A leaky sense transistor for example could cause this. A way out of spec emitter resistor could trigger it, since the voltage across it would rise quickly with increased volume. That's about all I got for the moment. Hello mzacharias I already measured the outputs of the speakers with the amplifier off as you suggested and I found that only the left front channel marks a resistance the channel measures from to ohms on the ohms scale of the multimeter 50 to 20 ohm on ohms scale the initial reading is from to from more to less even so the channel takes out sound but it is lower the volume than the others channels it is remarkable the other channels did not show resistance Do you believe that this channel is the channel of the problem?
Do you believe that the cause is the capacitor c shown in the service manual on page ? I send you image thanks for your help. Captura de pantalla Yes, that's definitely wrong.
I would check that cap immediately. If that cap, C was bad, it would cause the same trouble. Quote from: redboy on January 29, , pm. Pages: [ 1 ] Go Up. There was an error while thanking. SMF 2. EEVblog on Youtube.
Yamaha RX-V3900 input/output question
If you want a rich, full-bodied sound, the Yamaha should top your list, but others are more thrilling. You could be forgiven for feeling absolutely nothing upon first encounter with Yamaha's RX-V After all, like the other receivers in its range, it's a deeply plain and unexciting-looking unit, even by the standards of AV amplifiers. Still, the Yamaha lets its specs do the talking. On paper, the W per channel rating might not blow you away, but it's competitive, and it does have two extra channels on the Rotel RSX , making this a 7. You get four HDMI inputs and two outputs with a simplified remote for a second room , plus the usual raft of upscaling and upconverting options and full HD audio decoding. It also has networkability built-in via the Ethernet connection on the back or the optional YPA wireless adapter.
Networking - to Yamaha RX-V3900 - Help PLEASE!
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Controlling Yamaha RX-V3900 (Noob question)
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Media Server seeing triple on Yamaha RX-V3900
Table Of Contents. Quick Links. See also: Service Manual , Owner's Manual. Table of Contents. AV Receiver. Previous Page.
Yamaha RX-V3900 User Guide
Caution-i En 1 T o assure the finest perform an ce, please read this manual. Keep it in a safe place for future referenc e. A llow ventilation space of at least. On the top of this unit, do not place :. If the temperature.
Yamaha rx v3900 problems
Marka Yamaha. Model RX-V PDF İndir. Yer imlerine ekle.
Yamaha RX-V3900
RELATED VIDEO: Yamaha Home Theater Receivers: RX-V1900, RX-V3900, RX-Z7 - Crutchfield VideoAdvanced Search Search Tips. PDF Help File. We promise to never spam you, and just use your email address to identify you as a valid customer. The module is generally very good, but I have this unit running in my home system and we occasionally find that the system becomes unresponsive - this could be the unit itself, but I have an Ethernet module I wrote myself, and this doesn't exhibit the same issues though volume control via Ethernet is almost unworkable! To resolve, we have to select a different input, and than switch back to the desired input. These are pretty major issues, but otherwise the module works - I'm sure a revision might be able to address the problems.
רסיבר YAMAHA RX-V3900
A web browser interface allows you to control the receiver via a PC or PDA web browser over a home network. We got to see and hear this beauty up close an personal atr the Audioholic sExpo in Orlando this year. It was powering a suite of brand new EMP speakers that have yet to hit the market. We were impressed with its capabilities and couldn't believe the Anchor Bay Technologies video processing capability and prowess this AV receiver possessed. Rhapsody support and their new Network Receiver designation ensure that this product can plug into the Internet and deliver endless hours of music from any source imaginable, be it streaming or via the included USB port.
Yamaha rx v3900
Do you have a question about the Yamaha RX-V or do you need help? Ask your question here. Provide a clear and comprehensive description of the issue and your question.
Maybe I'll agree with your sentence
but still the variants?