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Old 25th April 2008, 09:41 AM   #1
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Default Help SPL Dinamics ext-3000D failure

I'm tendando to repair the amp SPL Dinamics ext-3000D, I had to reconstruct the entire power by replacing all IRFP064N is pilotaggi 2sa1275 transistors and other components, rebuilt part because board went to fire! wings all ok, a problem also found in secondary 4 final IRFP360LC short only that I can not finding is replacing with IRFP360 but nothing goes into protection led green then red, tolgo line end where I added the final 4 audio is always the same I realize that warms the pre-pilot that these integrated smd installed 7 +7 pin (symbol carteggiata how do I go back to its value) on bassetta the tolgo is finamlmnete only part that makes a sound type frying is I realize that the integrated pre 4556D warms a lot but I do not know where to buy it, the problem is to know the code dell'integrato sanded welded on basseta you know the code! then there are also two integrated covered by black resin but I suppose they are good!

modul DWM3640nhv_v30 , I serve the value of U2, U1 production for what it says IRF, I also know that opamp mount since they canceled resin is placed above

His clones with the same chassis:
hifonics Goliath GX3000d
Ground zero GZPA 1.5000 SPL
E-Audio 3000D
American Bass VFL 200.1
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Old 7th May 2008, 03:11 PM   #2
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upppp
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Old 14th May 2008, 02:05 PM   #3
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upppppp
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Old 14th May 2008, 02:05 PM   #4
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Help SPL dinamics Est-3000 failure
May 7th, 2008, 3:58am Quote
Help SPL dinamics Est-3000 failure , i try circuit diagram plate driver board DWM360NHV_v30 .

I found component failures is the key for'm trying to make repairs? I have already changed the final sull'ali IRFN064n is the final audio IRFP360LC I lack to repair the module pilot of IRFP360LC


link amp:
http://ampguts.realmofexcursion.com/...ics_EXT-3000D/

Linking photos module to be repaired :
http://i280.photobucket.com/albums/k...05-08_2202.jpg

clones amplifier model:
. American Bass VFL 200.1
. E-Audio 3000D
. Ground Zero GZPA 1.5000SPL
. Hifonics Goliath GX3000D


I need to know value components driver board U1, U2, CL1, Cl4, R9, R36, U3, U4

The IC have the values I just erased a certainty U1-U2 is that if IR21844S or mistake;
I R9-R36 is not burned reads more value, Cl1-Cl4 short, I have already changed 16 IRFP064N is I have to change 12 IRFP360LC but I must first repair driver board
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Old 14th May 2008, 05:40 PM   #5
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Location: Louisiana
U1 and U2 were probably IR21844S but I've been using IRS21844S. Either will probably work.

CL1 and CL4 are 4.7uf (measured) but I don't know the voltage rating. I think they're probably 16v components bu you should order the highest voltage for the package size. I think the datasheet for one of the driver ICs recommended ceramic caps for this application so that's what I'd use. If possible, use a cap with a COG or NPO temperature coefficient.

U3 is a TL072C

U4 is an LM211

Check the voltage suppressors (Black diodes - D210, etc?) near the base of the driver board. They often short.


Post car amp repair questions in the car audio forum. This forum is generally for design and troubleshooting of DIY amps and amp modules.
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Old 14th May 2008, 05:54 PM   #6
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thanks, u3-u4 are powered by +- 5v while Tlo72 and lm211 +-15 !!!!
Are you sure that this is the code?
the diode D3,D1(X315) is ok but as is his initials to see his datashett
I might also say the value of r9, r36

me your email?
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Old 14th May 2008, 06:05 PM   #7
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The resistors are 3.3k ohms.

I don't understand what you're asking here:

"u3-u4 are powered by +- 5v while Tlo72 and lm211 +-15 !!!!
Are you sure that this is the code?"
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Old 14th May 2008, 06:12 PM   #8
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I measured power U3 and is u4 +-5V; your ic have posted as power -+15V .
you have the key driver of the board you? the values that you are giving me concern for the board DWM3640NHV_V30?

Cl1, cl4 what:
http://it.farnell.com/jsp/search/bro...questid=142013
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Old 14th May 2008, 06:52 PM   #9
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R34, r35 is 10k ?
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Old 14th May 2008, 09:29 PM   #10
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Location: Louisiana
Those are the correct ICs.

I would have expected to see them powered by a 12 or 15v supply but they'll work from lower voltage. The boards are often marked with the part number of the regulator. If you follow the power supply circuit from the IC to the regulator, does the board indicate that the regulator should be 5 volts instead of 12 or 15v?

R34 and R35 are 10k.

You'll have to select the capacitor.
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