Naomi 838-13616 sound amp schematic.
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Naomi 838-13616 sound amp schematic.
Hey guys,
I bought a chopped Naomi Uni a year ago, modded for HotD 2. Great little cab. I was having issues with the sound, and found that both of my RCA jacks needed to be reflowed. I fixed those; however, after pulling my board, I noticed that most of it seems to have blown capacitors and corrosion all over. So I was attempting to figure all of the components on the board, but maybe there is a schematic floating around, hopefully?
I contacted sauservice.com over here in the states, and they had nothing for me, so I am now looking on forums, and am about to repair it myself.
I figure that a near brand new board (after replacing most of the components), would be better then a used one. If I can't find the schematic, I will post all of my findings up here...if you have any corrections, feel free, let me know.
The cap list:
C1 – 474 L (.47uF)
C2 – 474 L (.47uF)
C3 – 104 (.10uF)
C4 – 104 (.10uF)
C5 – 100uF 35v
C6 - 474 L (.47uF)
C7 - 474 L (.47uF)
C8 – 100uF 35v
C9 – 104 (.10uF)
C10 – 104 (.10uF)
C11 - 104 (.10uF)
C12 - 104 (.10uF)
C13 – 100uF 35v
C14 – 124L (.12uF)
C15 – 3300uF 35v
C16 –
C17 – 100uF 35v
C18 – 124L (.12uF)
C19 –
C20 – 3300uF 35v
C21 –
C22 – 104 (.10uF)
C23 - 104 (.10uF)
C24 – 47 (.000047uF or 47pF)
C25 –
C26 - 104 (.10uF)
C27 - 104 (.10uF)
C28 – 47 (.000047uF or 47pF)
C29 – 100uF 35v
C30 – 47uF 25v
C31 – 47uF 25v
C32 – 100uF 35v
C33 – 100uF 35v
C34 – 104J 50L or 60L
C35 - 104J 50L or 60L
C36 - 104J 50L or 60L
C37 - 104J 50L or 60L
C38 – 47 (.000047uF or 47pF)
C39 - 47 (.000047uF or 47pF)
C40 – 682J0 (.0068uF 20%)
C41 - 682J0 (.0068uF 20%)
Resistor List (All are 5% tolerance):
R1 – 47k
R2 – 47k
R3 – 10k
R4 – 10
R5 – 47k
R6 – 47k
R7 – 70k
R8 – 10
R9 – 10k
R10 – 22k
R11 – 830
R12 – 22k
R13 - 2.2
R14 – 10k
R15 – 22k
R16 – 830
R17 – 22k
R18 – 2.2
R19 – 100k
R20 – 100k
R21 – 100k
R22 – 100k
R23 – 100k
R24 – 100k
R25 – 100k
R26 – 100k
R27 – 100k
R28 – 100
R29 – 100k
R30 – 100k
R31 – 10
R32 – 10
R33 – 10 (Probably a higher voltage rating)
R34 – 10 (Probably a higher voltage rating)
I bought a chopped Naomi Uni a year ago, modded for HotD 2. Great little cab. I was having issues with the sound, and found that both of my RCA jacks needed to be reflowed. I fixed those; however, after pulling my board, I noticed that most of it seems to have blown capacitors and corrosion all over. So I was attempting to figure all of the components on the board, but maybe there is a schematic floating around, hopefully?
I contacted sauservice.com over here in the states, and they had nothing for me, so I am now looking on forums, and am about to repair it myself.
I figure that a near brand new board (after replacing most of the components), would be better then a used one. If I can't find the schematic, I will post all of my findings up here...if you have any corrections, feel free, let me know.
The cap list:
C1 – 474 L (.47uF)
C2 – 474 L (.47uF)
C3 – 104 (.10uF)
C4 – 104 (.10uF)
C5 – 100uF 35v
C6 - 474 L (.47uF)
C7 - 474 L (.47uF)
C8 – 100uF 35v
C9 – 104 (.10uF)
C10 – 104 (.10uF)
C11 - 104 (.10uF)
C12 - 104 (.10uF)
C13 – 100uF 35v
C14 – 124L (.12uF)
C15 – 3300uF 35v
C16 –
C17 – 100uF 35v
C18 – 124L (.12uF)
C19 –
C20 – 3300uF 35v
C21 –
C22 – 104 (.10uF)
C23 - 104 (.10uF)
C24 – 47 (.000047uF or 47pF)
C25 –
C26 - 104 (.10uF)
C27 - 104 (.10uF)
C28 – 47 (.000047uF or 47pF)
C29 – 100uF 35v
C30 – 47uF 25v
C31 – 47uF 25v
C32 – 100uF 35v
C33 – 100uF 35v
C34 – 104J 50L or 60L
C35 - 104J 50L or 60L
C36 - 104J 50L or 60L
C37 - 104J 50L or 60L
C38 – 47 (.000047uF or 47pF)
C39 - 47 (.000047uF or 47pF)
C40 – 682J0 (.0068uF 20%)
C41 - 682J0 (.0068uF 20%)
Resistor List (All are 5% tolerance):
R1 – 47k
R2 – 47k
R3 – 10k
R4 – 10
R5 – 47k
R6 – 47k
R7 – 70k
R8 – 10
R9 – 10k
R10 – 22k
R11 – 830
R12 – 22k
R13 - 2.2
R14 – 10k
R15 – 22k
R16 – 830
R17 – 22k
R18 – 2.2
R19 – 100k
R20 – 100k
R21 – 100k
R22 – 100k
R23 – 100k
R24 – 100k
R25 – 100k
R26 – 100k
R27 – 100k
R28 – 100
R29 – 100k
R30 – 100k
R31 – 10
R32 – 10
R33 – 10 (Probably a higher voltage rating)
R34 – 10 (Probably a higher voltage rating)
Last edited by MonoTekETeA on May 15th, 2012, 6:17 pm, edited 1 time in total.
- chacal
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Re: Naomi 838-13616 sound amp schematic.
Cool Thanks you
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Re: Naomi 838-13616 sound amp schematic.
Only the ICs, Diodes, and Inductors to do next. If I find time I will draw up a schematic, but that isn't really needed after all this info has been recorded, unless you want to make your own.
-Jeremy
-Jeremy
- Rossyra
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Re: Naomi 838-13616 sound amp schematic.
Tell me...
Does your cab go FOOM! when you switch it on, now that you've replaced components on this amp?
Does your cab go FOOM! when you switch it on, now that you've replaced components on this amp?
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Re: Naomi 838-13616 sound amp schematic.
Haven't done any switching yet. I've taken my lunch breaks to break down the PCB, and then I will order the crap after I am done.
Edit: The only thing I expect is for the corrosion to stop spreading and the board to live...hopefully.
Edit: The only thing I expect is for the corrosion to stop spreading and the board to live...hopefully.
- Rossyra
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Re: Naomi 838-13616 sound amp schematic.
I'd be curious to know, I've had 4 of these amps and they all go FOOM!opretty much 9 times out of 10 when the cab is powered up.
I'm not the only one either.
I'm not the only one either.
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Re: Naomi 838-13616 sound amp schematic.
Lol, I thought you were joking. Okay, I'll let you know.
- Rossyra
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Re: Naomi 838-13616 sound amp schematic.
Normally I am, on this rare occasion I wasn't
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Re: Naomi 838-13616 sound amp schematic.
Anyone know what the Black RCA hookup is for?
- Rossyra
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- Location: UK
Re: Naomi 838-13616 sound amp schematic.
It's a line out for cabs with a separate subwoofer amp (Crazy Taxi. etc).