Question about Technics SA-AX540 Receiver

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Overload when the volume is down low the fan does not work not till the volume is 1/3 turned up

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6ya6ya

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Hi there,
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Posted on Jan 02, 2017

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Anonymous

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SOURCE: Technics SA-AX730 Receiver PLAYS FINE AT A VERY LOW VOLUME.

Have you checked to see if your fan is still working.....I am having the same issue but I think it's my fan b/c it was doing this when I first got it and for the 1st couple of years.

Posted on Jul 31, 2009

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shaun taylor

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SOURCE: Technics SA-AX7 OVERLOAD problem

hello there are 2 big capacitor behind the metal heatsink see if one has swelled up if so change them both then check the output chip to see if there are any dry joints then when you've check all and still the same then you may have to change the output transistor g ood luck

shaun

Posted on Oct 01, 2009

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Technics stereo Integrated Amplifier SU-G75 powers up few seconds then overload light appears and a clickng noise coming out of metal boxq with tag FP-3 M V RTP1P5C015 on it iis it supposed nto make c


If the receiver works at low volume, but goes into OVERLOAD and shuts down at higher volume, it means you are player the unit too long and too loud. Try yo keep the volume down to a reasonable volume.

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The motor is bad. It is overheating and shutting down on thermal overload. You need a new motor

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Played samson 412 aura speakers for about 6 hours today with the volume at 1/4 of the way turned up.. the speakers became very hot and turned off by them selves.. I have them mounted on stands in a corner...


The volume setting on the speakers has LITTLE to do with how hard you are driving them. Your source might be extra hot and overdriving them. Read the specs on the speakers and use a sound meter to check your level. The speakers, being only 12 inch, should fill a room 20 foot by 20 foot to about 95 to 100 Db which you are only allowed 2 hours in MAX to prevent hearing loss. At 6 hours you should keep it down to 85 Db SPL. I know several deaf musicians that were exposed to high sound levels in rock bands... a deaf musician is kind of washed up.

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Ahh technics. Technics always had overheating problems, trust me. Every since they started, their amps would get so hot they would hurt to touch. The reason the fan is not coming on seams to be something inside the circuit board. I'm sure that technics could fix this. If the fan works out of the receiver, then it must not be the fan. ;P

I would maybe get a computer fan, and just put it on top of the receiver and turn it on, or send it in for fixing. Also, do you have to crank the volume to get the speakers to play at your volume, and does the impeadence match the receiver. Because you may be pushing the receiver too hard.

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Check the speakers maybe one is already about to burn

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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.

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1 Answer

Overload


Have you checked your wiring connections? Wires could possibly be touching each other making it short out and giving you that "Overload". If not that then I would say it could possibly be a fuse that has gone bad inside. ??? Just some suggestions. The reason I say that it could be the wiring is because when I hook up a system and the wires accidently touch each other it overloads the system past a certain volume. Again I would check my wires first and move on from there.

Dan Colton, Ca

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Jl amp


the overload protector of your unit it so sinsitive try to cutof the overload relay and then observe 20 min. monitor the allominum heatsink the temp. normal

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2 Answers

Technics SA-AX730 Receiver PLAYS FINE AT A VERY LOW VOLUME.


Your speakers are way tp powerful you should only use speakers just over what the amp is rated at the most and check your impedance is not lower then 6 ohms and turn the bass to half way i am using 60 watt bookcase psb speakers and they work just fine and they pound no problem

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4 Answers

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Make sure that you are using the right Guage wire for that installation. I had the same problem with another amp. I changed both, power & ground wires to 4 Guage and it worked fine after that. maybe that would work for you.

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