Question about Technics SA-AX910 Receiver
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Posted on Jan 02, 2017
first of all, check all the capacitors. Other than that, it needs a repair guy to have a poke about inside it with a screwdriver. Has anything happened to it lately that could have upset it a little bit? such as a powercut or had anything done to the plug? (e.g. change of fuse, and put in one that was a different rating) And is it plugged into a surge protection socket, or a plain old fashioned electrical socket?
Posted on Nov 22, 2005
SOURCE: Overload on Technics SA DA10
This is an old message so you may not be interested any more.
There are a couple of possibilities; the high power of this unit seems to fry speakers fairly often and although they mostly fail 'open,' they can overheat causing the voice coil to lose its insultation and cause a short instead.
This may also be caused by the failure of one or more output modules causing the power supply to limit and give you the overload indication.
If an output module has failed and the unit is not limiting current, it may destroy speakers too.
Some knowledge and a decent meter would reveal the nature of the failure pretty quickly but describing the steps necessary to troubleshoot this is a little beyond the scope of this forum.
Posted on Apr 23, 2008
SOURCE: my technics keep telling me
There are only 2 things you can do as the end user.
1. is to disconnect the speakers and see if it turns on without the overload error. If it does, you may just have a bad speaker or speaker wires that are shorted together.
2. Unplug the unit from the wall and wait about 2 or 3 hours before plugging it back in. This will reset the microprocessor and if the micro has any minor software glitches, it will clear them.
The most likely problem is that one of the output amp IC's is shorted and it is going into protect mode.
Another possibility is that the solder connections on the amp board are bad. These Technics receivers are very well known for that.
If the first 2 suggestions do not help, you should take it in to a repair center to have it looked at by a professional unless you are have some very good soldering skills, and have a multimeter to check some voltages.
I hope this helps,
Posted on Jun 22, 2008
It probably needs soldering of the voltage regulators and/or output IC.
I think that model has an access panel on the bottom (it may need to be cut out then rotated and screwed back on when done).
If it doesn't have the panel the main circuit board needs to be taken out to access them.
The regulators and output IC are mounted on the main heat sink. a little soldering and it should be good as new.
Posted on Feb 17, 2009
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