My Technics AV Control Receiver SA AX530 is in overload

question edited for clarity and toss in a load of CAPS.
Question moved from Cars and Trucks.

Replacement remote control

https://www.google.com/search?q=technics+sa+gx530+remote+replacement

Technics SA-GX530 Service Manual

ManualsLib https://www.manualslib.com > ... > SA-GX530
View and Download Technics SA-GX530 service manual online. AV Control Stereo Receiver. SA-GX530 stereo receiver pdf manual download.
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Is there anything on top of the av receiver? Try and run the reciever so that it has enough cooling. B) Allthough overload, there is a possibillity it is causes by speakercables who are shortcircuiting once in a while. Usually somewhere at the back of the reciever or speakers.

It has a power amp module failure
and these cost more to repair than normal
Buy a replacement

Have you tried disconnecting all the speakers and inputs and turn it on?
If it still shuts off you have an internal problem, if it stays on, connect one item at a time until it shuts off and that is the problem.

Hello,there is a chance that you have a damaged speaker and that the amp is ok. Check the unit with no speakers at all connected,if there is no overload displayed then its a bad speaker.

check your speaker connections, or unplug all your speakers and verify the problem still happens. If so it is an internal problem and most likely not worth getting repaired.
Thank you,
Lee

check for shorts on the speaker terminals

I have a technics too, and faced the same problem. The solution is very simple just ensure the +ve and -ve wires are connected correctly for each speaker to the amp. Eg. red wire to the red knob and black wire to the black on both ends. sometimes this arises because the wires are of just one color however there will be some marking on the wire to indicate which is +ve and -ve. This took care of the overload problem.

just an idea maybe check the position of speaker select switch some models have
a or b
or a+b