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Discussion Starter · #1 ·
I have a Karaoke system included : Karaoke dvd player, Vocopro Amplifier & speakers plugged into the same wall outlet. I heard a pop sound when turn my restroom fan from on to Off position.



What happened here? and how to resolve this issue.


Thanks!
 

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Options:

Don't turn the fan off while performing.

Put the Karaoke gear on a different electrical circuit.

Replace the "switch".

Get a new fan.
 

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Discussion Starter · #3 ·
Quote:
Originally Posted by Ratman
Options:

Don't turn the fan off while performing.

Put the Karaoke gear on a different electrical circuit.

Replace the "switch".

Get a new fan.


- Don't turn the fan off while performing. -


Sometimes, a lot of friends are comming over for karaoke party. It's harder for me to keep everyone off my switch. Besides, we don't want to keep the fans on for couple of hours on during the singing. It would waste a lof of electricity.


- Put the Karaoke gear on a different electrical circuit. -


this suggestion is better. Now I need to find a longer power cable.


- Replace the "switch". -


Something tell me that it isn't a answer.


- Get a new fan. -


Maybe a new less current drawing fan would solve the issue, but it might require to spend mucho money.


anyway, thanks for your suggestions.
 

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Quote:
Originally Posted by linhsy
- - Replace the "switch". -


Something tell me that it isn't a answer.
Something tell me that good answer too!


For the sake of
 

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Discussion Starter · #5 ·
Quote:
Originally Posted by Ratman
Something tell me that good answer too!


For the sake of
 

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Switching off inductive loads (like a motor) results in large bursts of RFI. This is the most likely culprit. The onus is on the manufacturer of your audio eauipment to design a system that is not so susceptable to this induced noise.
 

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Testing the gear on an isolated circuit will probably confirm/deny the RFI theory. (And perhaps the easiest to test.)
 

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Don't know if this is related, but a few weeks ago I replaced some of the wiring in my home theater system between the cable box PVR and the Ref 50 preamp. One of the wires was the audio coax. Poping everytime the refrig came on, flouresent light turned off, etc. Swapped the audio coax for one of those orange digital coaxes from Radio Shack and noise stopped immediately. You might want to try switch the audio coax between the DVD player and the receiver.
 

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Discussion Starter · #10 ·
Thanks all for your help.


The dvd is connecting to amplifier through analog cable ( the Karaoke amp doesn't have a digital one.). However, I will try to switch it with another pair and see if it will help.


I will try to test on another walloutlet and make sure it related to RFI issue.


I haven't replaced any switch before so I don't know how hard it is. However, I will try to ask my friends if they know how to.


Ethan, thanks for another tip. I need to read it now.


Linhsy.
 
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