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Eclipse 36401
Eclipse 36401
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Old 14th August 2010, 03:51 AM   #1
brandes.cm is offline brandes.cm  United States
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Default Eclipse 36401

Need a little insight with this amp. I see no activity from the 494, what I don't see is the typical LM393 comparator next to it for shutdown. It has a mess of transistors around it, maybe I need to focus on those.

Originally one of the output gate drivers had defective solder joints on all 3 pins. I soldered that back in, but still no output.
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Old 14th August 2010, 04:18 AM   #2
brandes.cm is offline brandes.cm  United States
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Join Date: Sep 2009
Location: Wisconsin
Without the pcb mounted in the metal heatsink a gnd is floating, that is why no start up. Next time I won't accept an amp that has been taken apart, unless I get all the hardware with it.

I still have no rail voltages, will have to check all connections now.
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