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Deaf Bonce Outputs
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Old 2nd October 2019, 11:52 PM   #1
RJohns777 is offline RJohns777
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Default Deaf Bonce Outputs

Hi. Working on a Deaf Bonce Apocalypse AAB-11800.1D. The outputs are shorted. The only number on the output is C2. Anyone familiar with this mosfet? Anyone know a good sub? Thanks.
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Old 4th October 2019, 08:36 PM   #2
Bertje is offline Bertje  Netherlands
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IRFB4321 should work. It's the same board as the Soundigital evo 12k , not very fine amps to work on..
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Old 4th October 2019, 10:00 PM   #3
laluns is offline laluns  South Africa
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you will also need to check the drive chip and drive buffer ic. On the drive chip pins 1 you should get around 10v and pins 2 around 5v.If you do not get those voltages you will need to replace the chips

Last edited by laluns; 4th October 2019 at 10:12 PM.
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Old 8th October 2019, 09:32 PM   #4
RJohns777 is offline RJohns777
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Thanks Bertje And Laluns. They've ground the numbers off these chips. Do you know the chip mumbers and location on the board. Thanks
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Old 11th October 2019, 08:45 PM   #5
RJohns777 is offline RJohns777
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Here's a pic of the board.
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File Type: jpg 20191011_143621.jpg (1,022.9 KB, 76 views)
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Old 11th October 2019, 11:34 PM   #6
ultra is offline ultra
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There is a possibility that i can get those parts for you, but they will also be grounded off.
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Old 12th October 2019, 01:49 AM   #7
AzeemSA is offline AzeemSA  South Africa
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Deaf Bonce Outputs
hello everybody

these boards are quite the nightmare to repair if you arent a certified dealer.

@barevides has posted avideo in which he has done valuable reverse engineering on these boards. his breakdown is quite indepth.

here is the link below

YouTube

i hope this helps all of u

i have downloaded the video and added to my copy of Perrys ART incase one arrives at my bench in the future
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Old 12th October 2019, 10:48 PM   #8
Bertje is offline Bertje  Netherlands
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I will post the partnumbers.

I have a AAB 11800 defective here, but with replaced both driver IC's and 4 gatedrivers and mosfets, it started up with clipping led on. Railvoltage will come on after about 30 seconds, so check also the duty cycle of the gate of H3 power supply mosfets (just small peaks with the amp I have..). The systemcontroller (PIC 16F1828) is defective or see some wrong inputsignals.
All low voltage power supplies seems te be ok.
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Last edited by Bertje; 12th October 2019 at 10:53 PM.
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Old 13th October 2019, 03:08 PM   #9
Lenin89 is offline Lenin89
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Quote:
Originally Posted by Bertje View Post
IRFB4321 should work. It's the same board as the Soundigital evo 12k , not very fine amps to work on..
These WILL NOT WORK !
I've already tried it and could not manage to make it work.

Couldn't manage to repair the amp due to too much board damage and not available output mosfets in my region.

Check NSV/Barevids video on SoundDigital amps.
YouTube

Ground Zero, Alphard and couple more brands, their full bridge amps are all Sound Digital brazilian style amplifiers, just different heatsinks and decals. All of them are made by Sound Digital and their customer support is - "please send the unit to our certified repair center" and "we can't provide that information"....

Hope that helps.
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Old 13th October 2019, 08:38 PM   #10
Bertje is offline Bertje  Netherlands
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Barevids video just tells mosfet C1 = IRFB4127 and C2 = IRFB4321....
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