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Old 5th June 2005, 05:07 PM   #1
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Default problem with Marantz amp PM-80SE

I am trying to repair a Marantz PM-80SE no output.
Does anyone have a service manual of this amplifier?
I already did some measurements open and check transistors
Caps resistors voltages supply rails. Seem look okay. But no quiscent current bias not working output device doesnít warm-up
Replaced STK 3102 IV by an STK 3102 III but no change. IV III stands for what? Are these upgrade versions, datasheet pin out are same. Any help is greatly appreciated.

Thanks
Crecencio
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Old 5th June 2005, 06:09 PM   #2
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Where did you find the datasheets? I'm too lazy at the moment to search.

As for the amp, try looking for burned safety resistors.

/Hugo
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