Question about Panasonic Technics Sa-gx690 Av Control Stereo Receiver/ Amp/ Amplifier 100 W Surround

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Technics SA-GX690 receiver has no power after experiencing a low voltage power failer. The reset button does nothing.

Is there a circuit breaker or fuse inside the case?

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Posted on Jan 02, 2017

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SOURCE: My Technics stereo system ...the display screen shows nothing

The question is, do you hear any sound? Is just the display off or is the entire unit shutdown? Can you tell?

These displays are known to develope poor solder connections at the power input and ground pins. If you can solder, open up the unit (unplugged of course) and examine the pins for the display. This will be on the PC board attached to the front panel. The pins at either end of a long line of pins will be the power and ground pins. Reasolder those pins, taking care not to short the pins together and try the unit once done. If that does not resolve the problem (assuming it is just a display problem), update this with as many details as you can about the behavior of the unit and we'll look further.

Dan

Posted on Nov 18, 2009

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No power


see this step: God bless you
check.gif Check the house circuit breaker to see if it tripped?
Click here if you own a Vacuflo Central Vacuum Unit continuously trips your circuit breaker
If it is tripped, then turn off your central vacuum unit and reset the circuit breaker. Then turn the central vacuum unit on. If the circuit breaker trips again, then refer to the following:
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check.gifCross the low voltage wire from the relay at the unit with a small screw driver. If you hear the relay click you need to replace your motor.
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Hi a have too same problems vhen i start reciever, reciever dont " click" and sound isn´t out.Than 15min to 2 hour later reciever "click" and all is o.k. I moved reciever to my friend. He is very good...


There is an internal "timer" circuit that controls the delay of the output relay. The capacitor in this circuit may be defective. Since it is part of an RC circuit, poor solder connections can effect this as well. Look closely at the board for any solder connections that appear grainy or have rings and resolder them. That may resolve the problem. If not, please update this with your findings and I will look up the service manual for this and list the probable defective components in the delay circuit.

Dan

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u can measure the speakers impedance, if is ok. I think this can be a problem, when is speakers with 4ohm conected.

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