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Vibe Concept Black Box (BB1) missing/burnt parts
Vibe Concept Black Box (BB1) missing/burnt parts
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Old 22nd May 2020, 03:56 PM   #1
Formas is offline Formas  Jamaica
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Default Vibe Concept Black Box (BB1) missing/burnt parts

Does anyone has a schematic for this particular or similar amp? Iím needing identifiers for Q21, U1 and R138.
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Old 22nd May 2020, 04:39 PM   #2
Perry Babin is offline Perry Babin  United States
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Aren't the two channels the same so you could get Q21 from the other side?

The rectifiers won't be critical. If they're center tapped, something like the MUR1620CT and the MUR1620CTR should work.
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Old 22nd May 2020, 09:23 PM   #3
Formas is offline Formas  Jamaica
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Join Date: May 2008
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The U1 is more of my challenge, U12 is KA317, could U1 be the negative (adj) regulator 337?
Should I check if the output pins is connected to the op amp B+ and B- respectively?
P.s. U1 and U12 is the last component on both side to the RCA end of the board (one is missing).
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Old 22nd May 2020, 10:40 PM   #4
Perry Babin is offline Perry Babin  United States
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You have to look at all of the terminals (input, output...) and their connections to other components to know what it is.
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