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Old 13th September 2011, 12:56 AM   #1
timwebb is offline timwebb  United States
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Default audio pipe 1800
i have a audio pipe and one of the drive transistors are burnt. i cant read anything off it.. q28
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Old 13th September 2011, 01:22 AM   #2
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If you want to know definitively what it is and it's a power supply driver, look at the drivers for the other bank of FETs.
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Old 13th September 2011, 01:44 AM   #3
timwebb is offline timwebb  United States
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the marking is m6. correct?
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Old 13th September 2011, 01:49 AM   #4
timwebb is offline timwebb  United States
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BSR58
Last edited by timwebb; 13th September 2011 at 01:53 AM.
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Old 13th September 2011, 02:39 AM   #5
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Is the collector connected directly to ground?
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Old 13th September 2011, 02:50 AM   #6
timwebb is offline timwebb  United States
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yes.
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Old 13th September 2011, 04:30 AM   #7
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It's likely a 2SA812. If you have the MMBTA56s on hand, that should be a good sub.
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Old 13th September 2011, 04:43 AM   #8
timwebb is offline timwebb  United States
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i have MMBTA56 on hand.doing it now.
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Old 15th September 2011, 12:49 AM   #9
timwebb is offline timwebb  United States
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when i install the power transistors in a39q and q39 it the power light osc. when i take them out the circuit it powers up fine?
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Old 15th September 2011, 01:37 AM   #10
timwebb is offline timwebb  United States
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could i replace the MMBC1623L6 with MMBTA42?
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