The "Official" Onkyo TX-NR905 Thread - Page 285

Hi,

Just ordered two 140mm fans to try and keep this beast a bit cooler.

http://www.noiseblocker.de/en/BlackSilentPro140.php

Had one movie where the audio track was very quiet and had to crank the volume up which then led to the unit getting to hot and it kept cutting out.

Is it sufficient to just sit the fans on top of the unit? Or should I build a frame to sit over the whole amp with the fans mount on this. This would create a seal across the whole amp and draw air through the amps side and bottom vents.

edit: The amp is in an open rack with plenty of space above and to the sides.

Will also check my Firmware revision as I am not sure if later versions will help with keeping it cooler. The reon should not be working most of the time as most sources tend to be native 1080p

Why not order one of these? Seems like a pretty elegant cooling solution and takes the manual labor out of the equation.

If I could buy that here (in Switzerland) for that price I would. But it is double the price here and not even in stock. Two 140mm fans were less than 50chf (ca. $50) I could have gone for 120mm versions about half the price.

Hopefully two fans sitting on-top will be enough to make a difference, I've only had the problem with one movie with a low audio track and I wanted it loud.

I had a simular problem with an audio amp which when it was cranked up (for parties) it would overheat and make loud popping sounds (capacitors discharging I think). I stuck an old computer fan on top and the problem went away.

Hopefully this will cure the problem here and would be good to have the whole system running cooler.

Did you try unplugging it for a few minutes and/or resetting it to factory defaults?

I have 2 devices (DVD player, Directv box) connected into my Onkyo via Component, and then I have the Onkyo connected to TV via HDMI (i.e., I'm having the Component video sent via HDMI to TV). Recently I got a new TV and now video from those 2 devices is very shaky, and the picture keeps dropping in and out. Someone suggested a way to disable HDMI upconversion by pressing VCR button on receiver and then pressing Return, but does this work? Any other suggestions?

First, check the HDMI cable. Make sure it's seated properly at both ends.

You are describing disabling the video processor. (May not work on the 905.) You can disable up-conversion just by setting HDMI Monitor to No. (See p. 35 in the manual.) You'll have to use component cables.

Hi dude2006, you could try turning off "Immediate Display" found under Miscellaneous menu "OSD Setup".

Thanks but due to how my system is set up, I need to have the component video go to my TV via HDMI (i.e., I can't connect a component to the TV directly). So I can't set HDMI Monitor to No as you suggest.

Thanks but I tried doing that. I also tried setting HDMI Monitor to "Through" to no avail. I suspect there is something broken in my receiver, as in addition to the component video blanking out frequently, there also are squiggly lines around the edges of the picture. This only happens with component sources, so I think there is a problem with how the receiver is sending the component input through the HDMI output

Then set its output resolution to Through.

Edit: Oops--posts "crossed "in the mail."

I've noticed that for the past week +, I don't get proper DD 5.1 decoding from the CBS HD stations: Detorit and Seattle. (dialogue is coming from the left and right speakers and not from the center). When I switch to any other US network HD, I get the proper front 3 channels seperation. Has anyone else noticed this as well? It doesn't matter if it's live or recorded for me.

I am having a weird issue with my unit. It is nothing major but just annoying and wondering if anyone else is experiencing it as well.

I have my Moxi, 360 & PS3 all connected to my 905 via HDMI. I also have a Wii & PC connected via component. The issue that I am having is that whenever I am using the PS3 and adjust the volume, it never shows on the tv. It works fine for all of the other devices, just not the PS3. Again, nothing life shattering, just annoying. Has anyone else come across this?

alright guys, i guess im joining you in the ranks of the 905 users! hope i made the right decision! this one i got was a used one i got i tested it before i got it so it should be here next week sometime... steppin up from a 705.

Hi arc trooper and congratulations on your purchase. I too am looking for one. If you don't mind, could you tell me what you had to pay for it and where you found one. I am looking for a used one but the ones I have found either have the wrong firmware, are overpriced, or they were pretty well banged up. Thanks for the info.

golffnutt

i got mine for 6 bens shipped with the box and remote and such, i dont think its ever been touched firmware wise so it will be like a new unit, i plan on getting a antec cooler for it since i hear this thing runs hotter then hot and i dont plan on sacking my cabinet ive had for years just for this thing. i got mine on ebay

Thanks for the info. The fan is a MUST! I have an 805 with a fan on top and it makes all the difference in the world. This is my second 805 and I did not put a fan on top of my first one and my HDMI circuit board went out (lost all HDMI inputs). Looking for someone right now to replace the capacitors for me on the board. I bought an 876 about a month ago UPS dropped it and it arrived DOA, just my luck. Looks beautiful with all accessories that came with it when new just won't power up. Think I will put it on Ebay and try to get some of my money back. Anyway good luck with yours, they are truly great receivers when they work properly. Have a nice weekend.

ya i hope this one is fine, i told them to double box it for me since UPS doesnt have the greatest track record, but still better then the post office and better then fedex.. i got a record in the mail via snail mail and it looked like someone drove over it with a mail truck!!! im pretty sure this package is gonna be bigger then the UPS guy! i was gonna go with a 805 since it was around 150 cheaper but i made the guy a offer and he didnt say no so here i am. what fans are everyone using on theirs? i was thinking about puttin up for one of those antec fans. the ones that are around 80 bux after everything is said and done... or is that over kill?

found this computer rack fan set from a server... i wonder how loud it would be...http://cgi.ebay.com/Dell-PowerEdge-R...item20b74b8c07

The Antec unit you linked is for laptops.

I think you meant this unit:
http://www.antec.com/Believe_it/product.php?id=NTE=

Amazon link:
http://www.amazon.com/Antec-Profile-.../dp/B000QJ4ZE2


Pretty damn loud. As an IT Admin I hate going into the server room and trying to contact support on the phone with the fans whirring so loud.

that antec only does 8 cfm on high is that enough to move the air? theres a guy on ebay whose selling thermal switch fans for half the cost that would prolly move alot more air then 8 cfm

here's one....http://cgi.ebay.com/AV-Cabinet-Cooli...item19c3478c24

here's another one...http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWAX:IT

any ideas? the one guy doesn't have the CFM rating on his advert but the other does... i myself think putting that plate over the receiver really couldn't help matters as its covering up more area.... but like i said just a idea

update got a message back from the one without the cfm rating on it....This fan is rated at 58CFM and 21db at full speed. Standard operating speeds for this unit on top of a component is 1/2 speed, which is virtually silent. At half speed, the fan unit still moves enough air to replace the air inside most components 40-50 times per minute.

what does everyone else do to keep their 905's cool?

got lookin around and everyone seems to be afraid to use anything bigger then 50-60 cfm why is this? i found a badass 240 cfm 120mm fan that would move air like no tomorrow...

I have mine on the top of an IKEA entertainment stand. its 4 or 5 shelves all open air... it sits on the very top and works fine.... so all open to air flow. been running flawless for a few years now.

like this but made out of pressboard psedo wood finish

went with coolerguys.com had them build me a custom package for around 70 shipped gonna be able to move around 120 cfm all together between the 2 120mm fans. controlled by a programmable thermal controller.

well today is the day!!! im soo super excited... i almost called into work today! but i didnt since i know i wouldnt be able to just sit around the house... but all is well since my UPS man is a tool and doesnt come till about 8pm.... so i myself wont be recieving the package of awesome... ill have my freind do it since i have to bowl tonight... err damn prior obligations... but wish me luck. hopefully my fans for it will be here today as well..

whats the nominal temp this thing can get up to before i should be worried? i put the cooling system i bought into place right now theres 3 120mm fans and 1 140mm fan pumpin air into this beast.... ill post pics of where it is and such tomorrow after work... anyways the thermal controller temp gauge says at about regular listening volume im goin at around 86f i havent really hammered on it yet with a movie just some music and it got up to 96f before i put fans on it. any one care to chime in?