Question about Audio Players & Recorders
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Posted on Jan 02, 2017
Sometimes the receivers turn off if the speakers are shorted in order to protect the AMP circuit. So try this - 1. Disconnect all cables (speakers), inputs from Tape Deck, VCR and other input devices), sub-woofers, rear speakers all. Except the AC power cord. Then turn it ON and see if it stays on. If it still has the same problem, then most probably your power circuit inside the receiver has a problem - like a shorted Capacitor or diode etc. Based on how technical you can be and what resources and time you want to spend, this is repairable. But based on the price of a receivers these days, it is not worth. Good Luck!
Posted on Sep 01, 2007
SOURCE: Won't stay powered on
There is a relay right next to the fuses on the inside dg1u it says on the top. I cleaned it and pressed down firmly on it and it seem to have fixed it. It fired up for the first time.. The relay might need to be replaced if this doesnt work for ya.
I found a solution at: http://www.diyforums.net/forums/domestic-electronics/11098-yamaha-rxv795-receiver-shuts-itself-down-after-some-time.html
Posted on Dec 29, 2007
SOURCE: Yamaha RX-V1 Power
Got the same problem and did some searching.
Strange thing is that next day the amp works fine.
This is what I found on http://www.forums.hcsd.com.au/Blah.pl?m-1210733289/s-8/
SYMPTOM: The power cannot be turned on, or the protection circuit is activated to turn off the power.
CAUSE: Fluid leakage occurs from the backup capacitor C633 0.047F 5.5V (C662 in the case of RX-V3000/DSP-AX2) on the Function PCB and causes a short with the adjacent components and between patterns, resulting in operation of the protection circuit. Fluid leakage tends to occur with this capacitor particularly with high internal cabinet temperatures, with or without the power on. Often, the leakage is only visible with very careful inspection.
SOLUTION: Two types of backup capacitors are now available with a longer expected service life. When servicing, thoroughly clean the leaked fluid from the PCB and from under any nearby components before replacing the capacitor. There are models other than those mentioned above that use the subject backup capacitor. Check them for fluid leakage and replace the capacitor as needed.
Ref. No. Part No. Description Remarks
V3860300 ELECTROLYTIC CAP 0.047F/5.5V Vertical type
* VU545000 ELECTROLYTIC CAP 0.047F/5.5V
Ref. No. Part No. Description Remarks
C662 WD294400 ELECTROLYTIC CAP 0.047F/5.5V Vertical type
* WD292000 ELECTROLYTIC CAP 0.047F/5.5V Horizontal type
Posted on Jun 24, 2008
SOURCE: yamaha rx-v461 not working
Does the reciever have separate speaker switches?
Try turning off the speakers and turning on the amp.
If it doesnt have speaker switches , make sure ALL the speakers are connected at both ends and try turning on the amp again.
Posted on Feb 04, 2009
That may due to a bad power transistor, huge current flows when it's powered up, protection circuit kicks in and switch off the unit. Get to repair shop for check up and replacement.
Posted on May 02, 2010
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