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Soundigital evo SD12000 v2
Soundigital evo SD12000 v2
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Old 14th August 2019, 01:58 AM   #1
Ekacboon is offline Ekacboon
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Join Date: Aug 2019
Default Soundigital evo SD12000 v2

Friend of mine just bought this used

Went with him and it was hooked up in car and working

after we got back to the warehouse
I took the cover off to see one of the fets legs were missing/melted.

saw that they shave the chips and re engrave with codes

I saw on here someone said the H3 is CSD18502

was able to locate at mouser CSD18502KCS

is this correct and should i look for anything else out of place before soldering in the replacement?

thanks for the help.

I feel bad for him I kind of gave him the green light
looks legit go ahead to buy it..
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Old 14th August 2019, 03:49 AM   #2
barber02 is offline barber02
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Join Date: Jun 2018
If the mosfet is still good I’d try to repair the legs of the transistor with wire leads from 1/4 resistor at a minimum, I think the wire leads of a 1 watt resistor would be better and solder them on.

The alternative is to replace the mosfet with a new one, but doing that you need to replace all of the power supply mosfets on that side.

As for the part number. That one should do the job.

As for anything else to check, definitely the gate resistors to make sure they in spec and the board and vias for that mosfet for damage. Looks pretty cooked.

Last edited by barber02; 14th August 2019 at 04:17 AM.
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Old 14th August 2019, 01:17 PM   #3
ultra is offline ultra
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I confirm H3 is NOT CSD18502.
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Old 14th August 2019, 09:19 PM   #4
laluns is offline laluns  South Africa
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Join Date: Jun 2019
you can use the CDS18052 as I have seen SD use them on the older 12k amps. Mainly the amps that came in a silver case. Also another thing to take note the 12k amps that have the CDS18052 uses SI8244Cb chips to drive the output fets.
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