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I have an optimus stav 3670 stereo reciever that wont turn on. I have located 3 fuses, all test good. No lights, click, or any sound or reaction when power button pushed. I'm hoping there is a 4th fuse that I can't locate. Continuity from plug end all the way to transformer. Any ideas, I hope. Thank you, Mike.

Posted by Mike Pavay on


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Randy Tesch

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Mike, sounds as if it's not getting voltage to the remote control receiver circuit? Meaning that there is a low voltage (5volts) that sits there and waits for the signal from your remote to turn the unit on. This is also through the front power switch which is also tied to your on-off power relay. I would check for 5 volts around that. More that likely you a 5 volt regulator shot. Hope this may help?

Posted on Nov 26, 2013


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your motor is fried

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SOURCE: My dryer stopped working yesterday. When I press the button to start the dryer it hums, but it doesn't start turning. If I push the button 3-4 times in a row, it hums each time until about the 4th pre

Sounds like the motor is cutting out on its thermal fuse. The only cure is to change the motor.

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Mike Smith

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Remove 1 wire from the element . Your 220 V comes from ...110 motor , 110 control board . Check which wire is not getting 110 V , trace it and see which it comes from . That will tell you which one is defective .

Posted on Aug 01, 2009

Sal De

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SOURCE: Kenmore electric dryer, won't start and clicks by time dry knob

usually the thermal fuse goes and dryer dies part number 3390719 located in front of dryer on top of the blower wheel housing,when you read anything out you have to pull one of the wires off to get correct reading.also on some of the dryers there is a switch on the pulley that will kill the dryer if the belt breaks

Posted on Nov 06, 2009

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Take the batteries out of the remote control, then apply a piece of black tape over the IR sensor, Unplug the power, wait a few minutes, now power the unit back up, does the unit still have the same volume high symptom? If so, remove the tape and see if the unit responds to any other commands(other than volume) from the front panel. If it responds to the panel controls, the processor is most likely good. very seldom is the IR transistor bad, if it is no input command will work.

I have an optimus stav 3670 that won't turn on. I have located 3 fuse which all test good. No lights or sound when power button pushed. Continuity from plug end all the way to transformer. I'm hoping there...

Is your receiver plugged directly into a wall outlet; use your voltmeter (or in absence of one, a desk lamp or some other small appliance) into each of the duplex receptacles. I have gone on service calls where the outlet was defective- where one side of the duplex receptacle had power to it, while the lower branch was dead.
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Check to make sure that the internal breaker (if so equipped) did not "trip". I would also check each of the outlets on the strip to make sure they have power going to them too. One could be out while the rest are fine.
The reason why I say this, is you mentioned you have continuity (the potential path for electricity to complete its circuit) but you did not mention if you are getting voltage (energized) from the plug to the transformer.
Check voltage readings at the power "on-off button too- remember, a switch is just a break in the line current. That may be defective.

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