Question about Yamaha RX-V995 Receiver

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Yamaha Rx-995 System will power on for a second and then power off. I can see the fan starting to run and then shut off and power goes off too. Checked the fuse and replaced the same still have the same trouble.

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  • Anonymous Mar 19, 2008

    Press the switch button, it powers on for less than one second and then power off. Do not know what it goes wrong. Any expert can advise which portion it needs to be changed?

  • Anonymous Mar 19, 2008

    Same Problem. Cannot Switch on and hold it on

  • Math_E May 04, 2008

    I have the exact same issue... chech everything that I could.... has anyone come up with a solution... or cost to repair???

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: Yamaha AV Receiver RX V-995

You may have a problem in the primary stage in your Power supply !! Unhook everything that is attached to it .... make sure the power plug is in good shape and you have the right amout of ac at the plug and good grounding ... then then try turning it on again ....
Does it stay on ??
if not .. there is something wrong probably in the primary stage of the Power Supply ... could be a bridge or something like that

hope this helps

Posted on Feb 29, 2008

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  • 236 Answers

SOURCE: yamaha receiver model rx-v550

it is your protection circuit working, preventing the unit from any further damage to circuitry. you can check first your speaker cabling for any short connections, possibly red/black terminal wires got entangled. if all ok then try removing all speakers then turn on the amp. if still does the same thing turning off then you have a problem with the amp output stage, shorted power output transistrs/driver probably. if the unit turns on normal without the speakers then you must have one or both of your speakers busted. by the way this amp is multi channel, after removing ALL the speakers connected, and does not turn off anymore, put the speakers back one by one and observe if the unit with turn off and on which set of speakers. otherwise if still trips even without the speakers, it is your amplifier that is deffeective, any of the five channels, main, rear,center. let me know result so i can guide you on how you can get it repaired and what will be the extent of damage in case.

reden

Posted on May 22, 2008

  • 1 Answer

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.
PART(S): Old
Ref. No. Part No. Description Remarks
C633 or
C662
VT740700
V3860300 ELECTROLYTIC CAP 0.047F/5.5V Vertical type
* VU545000 ELECTROLYTIC CAP 0.047F/5.5V
Horizontal type
New
Ref. No. Part No. Description Remarks
C633 or
C662 WD294400 ELECTROLYTIC CAP 0.047F/5.5V Vertical type
* WD292000 ELECTROLYTIC CAP 0.047F/5.5V Horizontal type

Posted on Jun 24, 2008

  • 125 Answers

SOURCE: Yamaha RX-V995 receiver turns on & then powers off 2 seconds late

I suggest you run self diag.  press [FM/AM] key + [Input mode] key and press the [power/standby] switch.

ps prt = power supply problem
dc prt = shorted output or leakly cap in channel
tmp prt means to hot on heatsink

you'll likely have to measure the resistances of the output FETs to find a short, 

Posted on Feb 03, 2009

  • 1 Answer

SOURCE: Yamaha RX-V2400

Had same problem. Display would read, "Check Speaker Wires". Rear speakers were shorted by a carpet nail. Works fine now.

Posted on Dec 28, 2009

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Yamaha AV Receiver RX V-995


You may have a problem in the primary stage in your Power supply !! Unhook everything that is attached to it .... make sure the power plug is in good shape and you have the right amout of ac at the plug and good grounding ... then then try turning it on again ....
Does it stay on ??
if not .. there is something wrong probably in the primary stage of the Power Supply ... could be a bridge or something like that

hope this helps

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2 Answers

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

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Get another receiver! I had the same problem and had the power supply replaced $250 and after 3 months it started doing the same thing.  I just purchased a Pinoeer Elite VSX 90TXV.

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