Bypassing Power Switch

[dumptruck]

Would anyone please help me figure out to bypass this power switch? I need to find out if it's the only problem. This is a concept 5.5 receiver.

 

[JBL GUY]

I do not have a service manual for this unit so...

Assuming that is actually the power switch...You just need to connect the two terminals with the brown wires and the capacitor together...

A safer way would be with the unit unplugged use an ohmmeter and measure the resistance across those two terminals...It should measure less than 1 ohm with the power switch on and should show an open circuit when the switch is in the off position.

Have you checked any and all of the fuses in the unit?

Also just going by your picture it looks as if there is some type of additional switching taking place on that switch assembly.

Again with out a schematic I am not going to be a lot of help.

Remember that is 120 volts AC so be careful.

 

[avionic]

Those are omron microswitches readily available..To by-pass you need to short out the common and normally open contacts.

 

[dumptruck]

I do not have a service manual for this unit so...
Assuming that is actually the power switch...You just need to connect the two terminals with the brown wires and the capacitor together...

Um, yep, it is the power switch.. I will try that pending some more advice?

A safer way would be with the unit unplugged use an ohmmeter and measure the resistance across those two terminals...It should measure less than 1 ohm with the power switch on and should show an open circuit when the switch is in the off position.
Have you checked any and all of the fuses in the unit?

Yep, 0.2 ohms when on. There is no question that the power switch (or maybe that cap) is a problem. It was acting up for a while, but now the unit turns on with shorting noises from the power switch, flickering lights, etc. I want to remove the switch from the equation to see if anything down the line has been damaged.

Also just going by your picture it looks as if there is some type of additional switching taking place on that switch assembly.

It has channel switches, loudness, and tone defeat but only their LEDs are wired into to the power switch, far as I can tell.

 

[dumptruck]

Those are omron microswitches readily available..To by-pass you need to short out the common and normally open contacts.

Yeah, but I was not feeling confident in my ability to identify those. Would you agree with JBLguy's identification of the ones with the heavy brown wires connected?

 

[avionic]

Yeah, but I was not feeling confident in my ability to identify those. Would you agree with JBLguy's identification of the ones with the heavy brown wires connected?

I would concur..

 

[avionic]

http://www.newark.com/omron-electronic-components/d3v-16g-1c25-k/snap-action-basic-switch/dp/25C4089

 

[dumptruck]

Thanks for help & link. I will give this a try in a bit here. One more thing, can I remove that cap (the one between these terminals) for now? I have a feeling it would like to blow..

 

[avionic]

Thanks for help & link. I will give this a try in a bit here. One more thing, can I remove that cap (the one between these terminals) for now? I have a feeling it would like to blow..

It will be fine.It won´t blow..

 

[dumptruck]

I did it, worked like a charm, seems to have fixed all problems (channels cutting out, lights flickering, scary noise in transformer). Thanks!

 

[JBL GUY]

Thanks for help & link. I will give this a try in a bit here. One more thing, can I remove that cap (the one between these terminals) for now? I have a feeling it would like to blow..

You could remove it...But it is not in circuit when the switch is on...

It is bypassed by the switch contacts...

Its main function is to help reduce arcing across the switch contacts as the switch is operated...

But if you think it might be bad...You can replace it when you replace the power switch. Then you can be sure it will be doing its jobs suppressing the arc in the switch when when the switch is operated.

 

[MacMan10-100]

Did you end up replacing that switch? If so what Omron switch did you use? I am replacing one that I can not find a replacement for.

 

[avionic]

Did you end up replacing that switch? If so what Omron switch did you use? I am replacing one that I can not find a replacement for.

See your other post about the Omron switch.

 

[niles300z]

Hello I have a Rotel with a instantaneous on power switch that appears to be faulty how do I bypass the switch with three wires one black one gray and one white thank you for your help

 

[avionic]

Hello I have a Rotel with a instantaneous on power switch that appears to be faulty how do I bypass the switch with three wires one black one gray and one white thank you for your help

The whole idea about by-passing a power switch. Is to create and " instant on " condition. In your case. Either find a replacement switch. Or plug your piece into a switchable power strip..

 

[niles300z]

That comes afterwards. The issue at hand is ..which is typically hot, ground, etc so I can bypass the switch by winding the correct wires together. Thank you though.

 

[avionic]

What model # Rotel ?

 

[niles300z]

Rx-950ax. Thank you.

 

[avionic]

Mark 1 or Mark 2 ?

 

[niles300z]

Mark 2. Wow. I never knew there was two models. Thank you.