Hi all,
This is a repost since I never completed this fix. I just left it, but now the receiver powers off into safe mode and does not complete the Self-Diagnostic when i start with those buttons pushed. It says it is, but does not do the diagnostics and does not show any faults or that it has none, which it should do. So here i am again. The previous post did have a schematic but I think it was cut off somewhere. I do not know what board it is referring to. Any help would be appreciated.
I have searched through the forums and have not found anything about my problem. So,...
Sinnyone
Member
Last Activity: 08-28-2023, 02:41 PM
Joined: 02-10-2022
Location: Chesapeake Beach, MD
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Yamaha RX-V3900 dim display and turns off
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Re: Yamaha RX-V3900 dim display
I figured it all out. -
Is this capacitor any good???
Hi all. Just checking to make sure if this cap is good bad ugly.
I believe it is supposed to be .047 with a 10% tolerance. I just want to make sure Im reading this correctly.
44.89nF or .044mF
on the schematic, it is c4
So, it looks like it is just barely ok. what you guys think please.
Thank you... -
Re: Yamaha RX-V3900 dim display
Now for the next question. I never realized there are different types of electrolytic capacitors. Would these be Axial non polarized, radial non polarized, polarized? On the schematic, there is a +symbol next to the capacitor symbol. Does that mean it is polarized?
the rabbit hole gets deeper.
Also, wheres a good place to purchace capacitors on line. thanksLast edited by Sinnyone; 08-28-2023, 09:00 AM.Leave a comment:
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Yamaha RX-V3900 dim display and turns off
Hi all,
This is a repost since I never completed this fix. I just left it, but now the receiver powers off into safe mode and does not complete the Self-Diagnostic when i start with those buttons pushed. It says it is, but does not do the diagnostics and does not show any faults or that it has none, which it should do. So here i am again. The previous post did have a schematic but I think it was cut off somewhere. I do not know what board it is referring to. Any help would be appreciated.
I have searched through the...Leave a comment:
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Re: Yamaha RX-V3900 dim display
So I know that it has been a while, but I never did get to this. I was taking a look at the diagram supplied by Lotas, and Im trying to figure out what board this is. Im looking at the service manual for this receiver and dont see a board like the one Lotas uploaded. I can find the caps on the board, If I can find the board Im supposed to be looking at. This receiver has a lot of boards in it. lol. any help would be appreciated.Leave a comment:
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Re: Yamaha RX-V3900 dim display
Hi, no, i totally blew it off, but now have another problem so will be trying to take care of this also.Leave a comment:
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Re: Recapping a Cerwin Vega Crossover help
Thanks...Leave a comment:
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Recapping a Cerwin Vega Crossover help
Hi all,
I have included a few pics of the caps on my crossovers on a pair of Cerwin Vega 311p speakers. They are well over 40 years old, so I thought new caps might help with their sound, and would be fun also. So, I have attached pics of the caps, but was wondering. Is it better to replace the caps, what caps would be best, and should I just buy a new crossover at parts express or something like that. The problem wikth buying a whole new crossover is i dont know where these particular speaker drivers fall off or which crossover to get. Im good at electrical work and soldering so no problem... -
Re: Yamaha RX-V3900 dim display
Another question, just for me, what are the capacitor symbols with the 3 lines candy caned through them...Leave a comment:
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Re: Yamaha RX-V3900 dim display
Going to open it up tomorrow and will take a look. Thank you....Leave a comment:
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Yamaha RX-V3900 dim display
Hi all,
I have searched through the forums and have not found anything about my problem. So, without further ado, my problem is a dim display on the receiver. I have tried adjusting the display brightness in the GUI menu, but it stays at, i would guess, 50%. I have read online that Yamaha is famous for placing caps too near a heat source and the caps prematurely go bad, or just bad caps. I have worked on pcbs quite a lot and have confidence that I can change any caps that might be bad, however, I have no idea where to find the caps to replace. I do have the service manual for that receiver,... -
Re: New Members - please post your introductions here
Hi all,
Just ghosting the forums checking out some of the interesting posts. I have a little electrical knowledge and like mostly audio and vinyl collecting, speaker building and upgrading, and watch and clock repair. Just tinkering all together. I have a current Yamaha receiver with a dim display, bad caps somewhere, which Im going to start a thread on. See if I can get it working at full brightness.
Thanks and glad to be here.
JimLeave a comment:
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