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Old 4th August 2011, 06:46 PM   #51
m4ick is offline m4ick  United States
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No problem, I wouldn't be about to have a new ZR240 without you.
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Old 4th August 2011, 10:27 PM   #52
m4ick is offline m4ick  United States
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Well, there is no more DC on either channel but the power AND protection LEDs are lit. The power supply fets get hot quickly.

If I increase the bias pots to their original positions it will attempt to come back out of protect, the transformer buzzes, then it goes back into protect.
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Old 4th August 2011, 10:54 PM   #53
m4ick is offline m4ick  United States
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As a side note I did locate another secondary CT trace that was broken and I have fixed that one as well.
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Old 5th August 2011, 07:28 AM   #54
Perry Babin is offline Perry Babin  United States
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How much current is it drawing when the power supply FETs get hot?

Were they clamped to the heatsink?

How long did it tame them to get hot?
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