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Old 7th January 2014, 06:39 AM   #1
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Default Cossfire VR2000D

Anyone know what driver IC's theese are??

The amp is stuck in protection mode I removed theese audio driverboards and amp powers up perfectly..

As you can see in the pics there is corrison on 1 of the driver IC's and i wanna replace both of them..


Wondering are they IR2010 or IR2110 or does anyone know what IC's theese are??

Also wondering if anyone knows is there anything else that commonly ails on theese driverboards??


The amp has IRF640 and 9640's for the outputs all of them test fine
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Old 7th January 2014, 09:08 AM   #2
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It's likely a proprietary IC like those used in the powerbass 3000 and other amps.

Look at the various SMD semiconductors to see if any have turned brown (instead of black/gray). Also check the back of the board for discoloration. Either of these can help you find components that run hot and are likely to fail.
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Old 7th January 2014, 05:45 PM   #3
timwebb is offline timwebb  United States
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On every one I seen those diodes Shorted... I have the part number somewhere.. I have a working vr4000 also.
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Old 8th January 2014, 04:01 AM   #4
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Anyone have a good part number for theese didoes (orange with blue stripe) all 4 of them are shorted on 1 of the driverboards..

Also the smaller didoe (orange black stripe) measures 0.014 in diode check

Any the small smd diodes appear to have overheated..

they are marked Z6 and Z13

So wondering if anyone has good part number for all 4 of theese didoes
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Old 8th January 2014, 10:29 AM   #5
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The Zener voltage may be as simple as 6v for Z6 and 13v for Z13.

For the others, you may have to find a board with good diodes and connect them to a currrent limited variable power supply to see where they break down (electrically).

In a similar driver board from a Memphis amp, the larger diodes were 1N4737 and 1N4740. The 4737 in each pair was farthest away from the header.
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Old 8th January 2014, 05:18 PM   #6
timwebb is offline timwebb  United States
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I got the ics as well I'll post them when I'm off work..
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Old 9th January 2014, 01:41 PM   #7
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For reference, the IC below is from the board I was referring to (amp - Memphis MC1.1100).
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Old 10th January 2014, 04:06 AM   #8
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Tim,

Do you have the part numbers for thoose diodes??

If so i would be thankful if you could share the info.
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Old 15th January 2014, 11:54 PM   #9
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My MB Quart uses a very similar driver board, using the same IC. and I never could fix it. Just a warning. Lol. I need to make up a generic driver board to replace those.
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Old 16th January 2014, 03:04 AM   #10
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Replaced the didodes and the 1D's and 2D's on the driverboards still same problem amp is stuck in protection mode
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