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Author Topic: Red light inside Crown XLS 402/202  (Read 4288 times)

Chris Carpenter

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Red light inside Crown XLS 402/202
« on: April 04, 2011, 01:25:57 am »

I have three Crown XLS amps, two 402s, and one 202. They all have a red light inside the chassis visible through the front grill. What is this for?
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Tim McCulloch

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Re: Red light inside Crown XLS 402/202
« Reply #1 on: April 04, 2011, 02:58:03 am »

I have three Crown XLS amps, two 402s, and one 202. They all have a red light inside the chassis visible through the front grill. What is this for?

It is the "majik smoke retention indicator."  If it goes out, the majik smoke has been released from some internal component and the unit requires service. ;)
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"Practicing an art, no matter how well or badly, is a way to make your soul grow, for heaven's sake. Sing in the shower. Dance to the radio. Tell stories. Write a poem to a friend, even a lousy poem. Do it as well as you possible can. You will get an enormous reward. You will have created something."  - Kurt Vonnegut

Mike Diack

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Re: Red light inside Crown XLS 402/202
« Reply #2 on: April 04, 2011, 06:53:26 am »

I have three Crown XLS amps, two 402s, and one 202. They all have a red light inside the chassis visible through the front grill. What is this for?

Part of the fan control circuit...
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Chris Carpenter

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Re: Red light inside Crown XLS 402/202
« Reply #3 on: April 04, 2011, 11:59:42 am »

Alright, so it's a happy light. Happy lights should be blue/green imho.

Thanks for the help.
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Chris Hindle

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Re: Red light inside Crown XLS 402/202
« Reply #4 on: April 04, 2011, 12:10:13 pm »

Alright, so it's a happy light. Happy lights should be blue/green imho.

Thanks for the help.
Hmmmm. Red light out, fan not happy. Bad happen soon... ;D
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Ya, Whatever. Just throw a '57 on it, and get off my stage.

Chris Carpenter

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Re: Red light inside Crown XLS 402/202
« Reply #5 on: April 04, 2011, 03:29:09 pm »

Hmmmm. Red light out, fan not happy. Bad happen soon... ;D

Haha, ok.
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Mike Diack

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Re: Red light inside Crown XLS 402/202
« Reply #6 on: April 05, 2011, 04:32:58 am »

Alright, so it's a happy light. Happy lights should be blue/green imho.

Not in Chairman Maos China - red was the happy colour.
Actually different colour leds have different forward operating voltages so in
this case (being used as a voltage reference) the colour IS important.
M
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