Question about Technics SA-DX940

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Cooling solution for technics volume controlled fan

Can you tell me your cooling solution?

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  • 71 Answers

Fit a case fan from an old p.c to the 12volt rail or ex ternal power supply put the amp at the top of the pile

Posted on Dec 08, 2008

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Posted on Jan 02, 2017

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Works fine at low volume, shuts off at maybe one third volume


This sounds like the cooling fan has failed, that's what causes the amp to shut down, because if it didn't, it would over heat, that's why the amp shuts off for safety of fire, because the cooling fan only operates in high volumes only, so I recommend replacing the cooling fan, because that's what's the cause, make so sure you order the right correct fan.

Jan 22, 2014 | Technics SA-AX7

Tip

Keeping your SA-DA8 cool


When I first bought this I noticed that it runs very hot even on low volume levels. I took it in for repair and told the tech that the fan didn't come on even when hot. He said "works as designed - the fan is output-power-driven, not temperature driven."

Wishing to prolong the life of ma SA-DA8, I used an old computer power supply and muffin fan. Plugged the PS into the controlled AC output of the amp, and the fan into the PS. Jumpered the "power-on" pins of the PS. Laid the fan on top of the amp, padded with some foam tape, and it now stays a lot cooler (and the fan is very quiet, though not silent.)

on Nov 05, 2011 | Technics SA-DA8 Receiver

2 Answers

Technics su-g75 amp goes to loud static after a few minutes


Hi Aawpharmd,

system control error.
please go for repair shop.
regards,
nuwan

Jan 13, 2014 | Technics SU-G75 Amplifier

1 Answer

In a 1999 ford tauras dohc.. what cooling sensor tells the fans to kick on..the one with 2 wires or the one with 1 wire??. My fans wont kick on...


Technically its the two wire sensor. Gray red and lite green red wires.
The sensor tells the computer what the coolant temp is, and the computer decides if the fan relay is needed. The fans come on at around 220 degrees.

Jun 05, 2013 | Cars & Trucks

1 Answer

Fan quit working. Is it likely the board, or the fan? Currently have a Radio Shack fan mounted; it's 120v, plugged into the AUX power on the back of the unit. It's noisy, otherwise unit works and runs...


Hi, Have got and still use a Technics SA-GX910 Dolby Amp. It had an overheating problem too due to Air temp and power drain etc and the internal fan only engaged at certain volume level. Overheating was overcome by adding another internal fan.
Your unit however might need a bit more of a fix-me-up or throw it away

Oct 09, 2010 | Technics SA-DX1040 Receiver

1 Answer

Technics sa-dx940 tv volume control


Check the sound setting on your TV, is it Fixed level out, if so you have to turn volume up on TV to go through the receiver.

Mar 19, 2009 | Technics SA-DX940

2 Answers

Hi there .......my sa gx303P stereo amplifier/tuner technics ...the cooling fan for the power amplifier works only on a somewhat strong signal .....if you play soft music at low volume the cooling fan...


These units are designed to only run the fan when necessary. If the unit is overheating, there is a problem in the detection circuit. This is a relatively inexpensive repair. If you are getting overheating when running at a low volume, it suggests that the speakers are not matched to the amp. In other words, the amp is expecting an 8 ohm load and is being presented a lower ohm load. This makes the amp work harder and generates more heat. Check the speaker wires and make sure that they are not frayed or crossing in any manner. Also, verify that the rating of the speakers is correct.

Update this with what you find.

Thanks,
Dan

Dec 02, 2008 | Technics Audio Players & Recorders

2 Answers

Technics SA-DA10 jumps into overload after 10 minutes


Have you tried connecting speakers? What was the result?

Yes, when you turn the volume up on these amps (or when the output gets past a certain level) the cooling fan should automatically come on.

Oct 14, 2008 | Technics SA-DA10 Receiver

1 Answer

Technics SA-DX940


Ratnesh, I have this same receiver and the fan only comes on at certain volume levels. Unfortunately I now live in an apartment and can very rarely listen to it that loud. I had the same problem for a little while until I thought about moving the receiver to the lowest shelf with nothing on top of it. This seems to have worked so far although it does still get quite warm. Good luck!

Aug 04, 2007 | Technics SA-DX940

1 Answer

Technics receiver SA AX540 overheating


is the fan turning on? many models like these have a cooling system (fan) that kicks up when the volume is turned to a certain level. if your fan has never been on, then chances are some of your soldering points have shifted or gotten a little messed up over time from the heating/cooling effect. this model runs extremely hot especially right where the vent is on the top of the cabinet. make sure that it is not in a shelf or enclosed area. dont stack other items on top of it. use an external device to control the volume so that you can have the receiver volume at a fixed level where the fan will turn on. if your sound still doesnt work, you should consider buying a new receiver or try your local craigslists forum. make sure if you buy a new one, that it is a more expensive model from a brand like sony and check the model online for known problems. stores like best buy offer extended warranties on most of their products which are very wise investments. good luck sinbad

Dec 03, 2006 | Technics SA-AX540 Receiver

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