These kind of machines are seriously complex and us guys generally don't dare to go near them without full service information.
A novice 'flying blind' is a sure recipe for disaster/time wasting.
Go find a service manual, or take it to a service centre, or go get an EE degree.
Take you pick.
Dan.
I think you hold down the tone and info button and press the power button. That should get you into the self diagnostic screen (if it's like the rest of the A series).
If the unit was in protect mode you can see real quick from there, use the scene buttons for navigation.
If the menu or display doesn't come up I'm betting the short/problem is on the hdmi/processing board.
How do I know this? I have 2 a2050's and one has the same flashing light issue.
If I put the hdmi board from the flashing light one into the other unit the flashing follows the board.
- jeff
If the unit was in protect mode you can see real quick from there, use the scene buttons for navigation.
If the menu or display doesn't come up I'm betting the short/problem is on the hdmi/processing board.
How do I know this? I have 2 a2050's and one has the same flashing light issue.
If I put the hdmi board from the flashing light one into the other unit the flashing follows the board.
- jeff
Just on your final point...
The reason the flashing light transfers is the 'faulty' hdmi/syscon board saves the error which it has detected from the amp/power section and will stay in protection shut down mode until cleared from the EEPROM, just changing board into another unit will not clear the error, it will merrily flash away in another unit...your 'faulty' board can be restored, The answer is in service manual I guarantee the solution is there...
and to make this more confusing Yamahas have trigger happy protection (well engineered!) system and can go into this state even for slightest voltage variation in the amp/power supply section.
It's highly unlikley the HDMI/syscon board has a short on it, rarely the small surface mount regulators can go open, causing PS protection errors, not the kind of error the OP described, these can be changed by an experienced tech and considering they are about $4 and the board complete is about upwards of $600 its well worth fault finding to this level and I am doing this more as units come out of warranty
Of course if you don't like my advice its a free world
Hi Jeff,
Thank you for your knowledge of these units.
I will try the steps you mentioned to see what error messsge I get
from this receiver.You have been very helpful on what problems these
units have. Also thank you Deadpool for your knowledge of these units also.
Dennis
Thank you for your knowledge of these units.
I will try the steps you mentioned to see what error messsge I get
from this receiver.You have been very helpful on what problems these
units have. Also thank you Deadpool for your knowledge of these units also.
Dennis
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Yamaha Rx-A1030
Good morning Jeff and Deadpool,
Having read your knowledge of these units, I tried the self diagnostics like Jeff recommended.It comes up with A1-1 DSP MARGIN on the display.After a few seconds the unit powers back down.
Dennis
Good morning Jeff and Deadpool,
Having read your knowledge of these units, I tried the self diagnostics like Jeff recommended.It comes up with A1-1 DSP MARGIN on the display.After a few seconds the unit powers back down.
Dennis
Dennis, google is your friend here, i did a quick search and found this:
https://www.manualslib.com/manual/865402/Yamaha-Rx-V667.html?page=26
I would highly recommend a service manual, they are out there and invaluable.
- jeff
https://www.manualslib.com/manual/865402/Yamaha-Rx-V667.html?page=26
I would highly recommend a service manual, they are out there and invaluable.
- jeff
Deadpool, thanks for the response, that was the same thing I was thinking. I have the service manual and didn't see the key sequence real quick. I have the rx-v one and tried that, maybe it's different for the a series.
Jeff
Jeff
Okay you have to power unit up through a light globe to see if you have a short in the output stage, if it glows at max brightness after switch on you will have a dead short on the outputs...then just fault find from there
If it doesn't your going to have an involved fault I would recommmend taking to a good Yamaha service agent
Deadpool, tanks for the 'kick in the pants' I don't do many yamahas but I did the protect reset on the other board and it's been running fine for a half hour now.
Many thanks and I owe you a cold one if you get around the states!
Ditto on the light bulb for a newbie, I have a hunttron and a ohmmeter I use, normally check the outputs first. Now if it was a denon I'd check the voltage regs first.
Many thanks and I owe you a cold one if you get around the states!
Ditto on the light bulb for a newbie, I have a hunttron and a ohmmeter I use, normally check the outputs first. Now if it was a denon I'd check the voltage regs first.
No worries, we need alot more techs getting into fault finding these products other than just swapping boards...but thats another story for another time🙄
and yes every audio tech must have a light bulb tester
Well, mine is not over yet, ran about 45 minutes and experiences the same dropping out of audio issue.
At least I've taken the hdmi board out of the mix, I was leaning toward the volume encoder before but the display working volume up and down threw me off. Maybe I'll get the scope out and check it out tonight.
- jeff
At least I've taken the hdmi board out of the mix, I was leaning toward the volume encoder before but the display working volume up and down threw me off. Maybe I'll get the scope out and check it out tonight.
- jeff
Dropping audio? Not going into protect? Audio dropping out and no protection errors recorded could be a DSP chip fault and is on the HDMI board (or daughter board if its plugged in).
easy check...check your preouts if audio is there you know DSP is ok...
I wish I could help more but they are hard its hard explain over the internet how to diagnose fully
That's what thought Also but it only does it after a while and the situation happens on 2 different hdmi boards. On any input also, not just hdmi.
I'm checking front panel first then daughter board.
I'm checking front panel first then daughter board.
Thanks, I think we have given him a good starting point. It's just tough on these units without the correct extensions to give access to take readings.
It won't be bad if he just has a few bad outputs. At least the thread is here to ask questions on.
It won't be bad if he just has a few bad outputs. At least the thread is here to ask questions on.
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