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Classe Cam 200 released the genie
Classe Cam 200 released the genie
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Old 20th November 2020, 04:41 PM   #1
downwind4final is offline downwind4final  United States
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Default Classe Cam 200 released the genie

Classe CAM200, owned since new. The amps were stored for about three years. I hooked both up recently and when they were powered on I got pretty dramatic sparks and smoke. Working perfect with no issues prior. Packed original boxes and stored in climate controlled, dry closet. Power cord to Furmann, XLR to preamp. The power chord and XLR tested and are not defective.

Any ideas what went wrong? Looks like the resistors exploded! I'm hoping I can just replace the resistors and give it a try.

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Last edited by downwind4final; 21st November 2020 at 01:50 AM.
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Old 20th November 2020, 08:38 PM   #2
duncan2 is offline duncan2  United Kingdom
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Old 21st November 2020, 01:51 AM   #3
downwind4final is offline downwind4final  United States
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Thanks. I think I fixed it.
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Old 21st November 2020, 03:54 AM   #4
kevinkr is offline kevinkr  United States
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Classe Cam 200 released the genie
The resistors exploded because something else is wrong. Probably time to find a good tech.
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Old 21st November 2020, 11:47 AM   #5
Trollet is offline Trollet  Sweden
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Classe Cam 200 released the genie
If it's R102 and R105 it looks like the source resistors for the lateral mosfet drivers. That's not a good sign, shorted drivers?

The schematic shows 10N20/10P20 -something, but service manual says there should be, or be swapped to, 2SJ79 and 2SK216.

Classe Audio CAM-200 Monophonic Power Amplifier Manual | HiFi Engine

/Figge
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Old 21st November 2020, 08:21 PM   #6
Trollet is offline Trollet  Sweden
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Classe Cam 200 released the genie
Sorry, I ment gate resistors.

/Figge
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Old 21st November 2020, 10:41 PM   #7
MAAC0 is offline MAAC0  Portugal
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Could be a spider crawling inside perhaps.
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