Receiver running hot, want to wire in some fans
Receiver running hot, want to wire in some fans
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Effortless

Original Poster:

197 posts

211 months

Thursday 24th September 2020
quotequote all
Hi all,

Some advice please...

I'm on my second Onkyo TX-NR609... first died of overheating. Might be stupid, but I like its features so I've bought another one cheap off ebay.

In an attempt to try to keep it cool in future, I've bought a couple of Arctic F12 120mm computor fans.





Question... Is there likely to be 12v available on any of the boards so I can wire the fans in permenently? Or will I have to source a 240/12v inverter to power it directly from the mains power input?

Thanks in advance.

Cheers,
Effortless

bunchofkeys

1,210 posts

84 months

Thursday 24th September 2020
quotequote all
Is that a USB port on the front? If so, could you not get a cheapy USB fan, and use that to power it?

Mr Pointy

12,571 posts

175 months

Thursday 24th September 2020
quotequote all
Where is it located? Is the ventilation restricted?

Effortless

Original Poster:

197 posts

211 months

Thursday 24th September 2020
quotequote all
bunchofkeys said:
Is that a USB port on the front? If so, could you not get a cheapy USB fan, and use that to power it?
It is... but that where i plug in my iphone :-)

I wanted an internal fit-and-forget system if possible... i.e. have the fans running permenently in the background as soon as the unit is switched on. Didn't want any external fans/wires getting in the way.

Cheers,
Effortless

Effortless

Original Poster:

197 posts

211 months

Thursday 24th September 2020
quotequote all
Mr Pointy said:
Where is it located? Is the ventilation restricted?
Located on top of a table with nothing stacked below it or on top... so ventilation as such isn't (shouldn't be) an issue.

However there's plenty of internet chatter regarding these units running very hot, and overheating chips seems to be a reason for failure for many of them, hence my interest in installing some cooling fans inside the unit.

Perhaps a stupid purchase, as I said in the OP... but there's no fool like an old fool :-(

Cheers,
Effortless

thebraketester

15,110 posts

154 months

Thursday 24th September 2020
quotequote all
I would run them from a separate power source.

anonymous-user

70 months

Thursday 24th September 2020
quotequote all
If it is on a table top, just get a desktop fan and leave a breeze running over the unit. It doesn't need much of a breeze to cool the unit. Those little fans will make a lot of noise, the other thing could be all the thermal paste in the unit has dried up and needs replacing or they didn't put enough in there during assembly.

Mr Pointy

12,571 posts

175 months

Thursday 24th September 2020
quotequote all
If it's already in free air then the only solution is to improve airflow through the case You could run it with the lid off for a start & if you don't like the open look then find someone to bend up a bit of open mesh into a U shape the size of the original top.

Is there any way you can add small heatsinks to the chips? The type the Raspberry Pi needs come with stick on thermal transfer pads:
https://www.amazon.co.uk/raspberry-pi-heatsink/s?k...

anonymous-user

70 months

Thursday 24th September 2020
quotequote all
Mr Pointy said:
If it's already in free air then the only solution is to improve airflow through the case You could run it with the lid off for a start & if you don't like the open look then find someone to bend up a bit of open mesh into a U shape the size of the original top.

Is there any way you can add small heatsinks to the chips? The type the Raspberry Pi needs come with stick on thermal transfer pads:
https://www.amazon.co.uk/raspberry-pi-heatsink/s?k...
I wouldn't leave the lid off as this is likely to provide easy access to the 230v supply inside, if it is just you in the house then your risk but it is a hazard to anyone else.

eccles

14,016 posts

238 months

Sunday 27th September 2020
quotequote all
Effortless said:
It is... but that where i plug in my iphone :-)
Cheeky little usb hub?

TonyRPH

13,349 posts

184 months

Sunday 27th September 2020
quotequote all
There is a 'universal port' on the rear.

You can get 12v at 0.5A at that port on pins 2&3 with ground on pins 4&5




Monty Python

4,813 posts

213 months

Sunday 27th September 2020
quotequote all
Bit expensive but this is what I'd be looking at:

https://www.amazon.co.uk/AC-Infinity-Cooling-Recei...

or even stick a laptop cooler on top of it.

Edited by Monty Python on Sunday 27th September 20:11

WhiskyDisco

1,025 posts

90 months

Sunday 27th September 2020
quotequote all
Use the USB and one of these.


matt666

448 posts

220 months

Sunday 27th September 2020
quotequote all
I’ve got an Onkyo which also runs hot. I bought a cheap laptop cooler and plugged it into the front USB, it didn’t seem to make much difference to the temps though.

A more expensive cooler might be better, but the 609 is a cheap amp these days and looks to go on eBay for about the same price as that 75 quid cooler, so you might be best just hoping for the best.

The amps have internal fans but I’ve never see mine on, despite it getting almost too hot to touch!

Best solution is the usb hub as mentioned above, the fan will turn on and off with the amp

ruggedscotty

5,893 posts

225 months

Sunday 27th September 2020
quotequote all
Ive done this on a few amplifiers computers and radio gear over the years,

Ive even had to modify the metal work on units as its no point in providing air if you cant get that air flow over the items needing cooled !

You also need to ensure that you can get the air flow going and the exhaust air flow ducted out and away from the item being cooled or you might just end up with circulation and no cooling. The noise of the fans can also be a distraction !

its a black art cooling - using ducts and getting into the flow equations due to the length of the ducts etc. I did one modification where there was room enough to get a duct down to the rear and then have that air flow ducted inside to the chip area. heatsink area. and that air was drawn back out and dumped else where.

I looked at a radio transmitter and that required a small air to water intercooler, the water circuit with a small header tank and radiator outside and a water pump to get circulation. that worked a treat. but that might just be over board, it was a tight layout and temperature was causing issues. if you can get cool air onto your hot components and get that hot air pulled away.

paralla

4,730 posts

151 months

Tuesday 29th September 2020
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I’ve had a quiet USB powered PC fan running for the past 7 years in my AV cabinet.

Jammez

692 posts

223 months

Wednesday 30th September 2020
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Worth checking if those fans are brushless, if so I don't think they will work with just a 12v supply?

wong

1,369 posts

232 months

Wednesday 30th September 2020
quotequote all
gottans said:
Mr Pointy said:
If it's already in free air then the only solution is to improve airflow through the case You could run it with the lid off for a start & if you don't like the open look then find someone to bend up a bit of open mesh into a U shape the size of the original top.

Is there any way you can add small heatsinks to the chips? The type the Raspberry Pi needs come with stick on thermal transfer pads:
https://www.amazon.co.uk/raspberry-pi-heatsink/s?k...
I wouldn't leave the lid off as this is likely to provide easy access to the 230v supply inside, if it is just you in the house then your risk but it is a hazard to anyone else.
If you still have the 1st broken amp, then you could drill lots of holes in the 1st amps cover and try that on the 2nd amp.