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Old 29th August 2013, 06:15 PM   #1
oldschoolamp is offline oldschoolamp  United States
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Default missing componets

someone gave me a alpine mrv400 and I have lost my schematic. I need part number for Q519 and Q520. I would be thankful for the info
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Old 29th August 2013, 06:22 PM   #2
Mooly is offline Mooly  United Kingdom
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missing componets


Moved to car audio forum
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Old 29th August 2013, 08:35 PM   #3
Perry Babin is offline Perry Babin  United States
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Assuming that you meant MRV-F400

Both are KTC3198s.

These are part of the differential amplifiers so when you replace them, you must also replace Q503 and Q504 so the two transistors in each differential amp match (relatively closely).
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Old 30th August 2013, 05:02 AM   #4
oldschoolamp is offline oldschoolamp  United States
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Thanks for the help it has saved me a lot of time.
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