SPL ZX1-3000D

brandes.cm · 3rd September 2011, 07:37 PM

To keep from jumping the Dr Zeus thread, I'll start my own.

R101, C101 by the RCA jacks are cooked. Any idea on values?

Cory

Perry Babin · 3rd September 2011, 09:10 PM

0.1uf and 220 ohms.

brandes.cm · 4th September 2011, 03:14 AM

Is it possible to populate only a portion of the P.S. fets? All of the outputs are pulled, just to check functionality of the supplies. There seems to be two banks of fets Q313-323 and Q413-423, two transformers and 4 rectifiers. Two supplies??

Perry Babin · 4th September 2011, 06:27 AM

At the minimum, you need to have one FET per primary winding.

I don't remember what the amp looks like but if it has two transformers, it likely has two independent power supplies.

brandes.cm · 6th September 2011, 01:53 PM

I have the power supplies running with only have of the fets, fine for now. I am looking for 1023 and 1027 transistors from the driver board. There are resistors and transistors bad on this card, basically just want to replace all of the discretes. Should I be looking for another name 2sc1027? Avnet, mcm and digikey do not have them.

cory

Perry Babin · 6th September 2011, 02:16 PM

I generally use the BD139 and BD140 as replacements for power supply drivers when those transistors fail.

If there is a K as the logo, the part number is likely KT... instead of 2S...

brandes.cm · 6th September 2011, 02:33 PM

Fairchild has a cross of KSA916 and KSC2316, this would be for the output stage.
KSA916---->KTA1023
KSC2316---->KTC1027
The BD139 and BD140 will work for the output stage as well?

Perry Babin · 6th September 2011, 03:55 PM

If it's for the output stage, use the fairchild components if they're identical to the originals.

brandes.cm · 13th September 2011, 01:55 AM

Any ideas what value R173 is; on the driver board. R172 is a 550ohm and I believe R173 should be the same except it was fried beyond recognition.

Perry Babin · 13th September 2011, 02:38 AM

560 ohms.

If you have the DVD, the photos of a similar board are linked under item 12 on the class D - type 2 page.

3rd September 2011, 07:37 PM	#1
brandes.cm diyAudio Member Join Date: Sep 2009 Location: Wisconsin	SPL ZX1-3000D To keep from jumping the Dr Zeus thread, I'll start my own. R101, C101 by the RCA jacks are cooked. Any idea on values? Cory

3rd September 2011, 09:10 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	0.1uf and 220 ohms. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

4th September 2011, 06:27 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	At the minimum, you need to have one FET per primary winding. I don't remember what the amp looks like but if it has two transformers, it likely has two independent power supplies. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

6th September 2011, 02:16 PM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	I generally use the BD139 and BD140 as replacements for power supply drivers when those transistors fail. If there is a K as the logo, the part number is likely KT... instead of 2S... __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

6th September 2011, 03:55 PM	#8
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	If it's for the output stage, use the fairchild components if they're identical to the originals. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links


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4th September 2011, 03:14 AM	#3
brandes.cm diyAudio Member Join Date: Sep 2009 Location: Wisconsin	Is it possible to populate only a portion of the P.S. fets? All of the outputs are pulled, just to check functionality of the supplies. There seems to be two banks of fets Q313-323 and Q413-423, two transformers and 4 rectifiers. Two supplies??

6th September 2011, 01:53 PM	#5
brandes.cm diyAudio Member Join Date: Sep 2009 Location: Wisconsin	I have the power supplies running with only have of the fets, fine for now. I am looking for 1023 and 1027 transistors from the driver board. There are resistors and transistors bad on this card, basically just want to replace all of the discretes. Should I be looking for another name 2sc1027? Avnet, mcm and digikey do not have them. cory

6th September 2011, 02:33 PM	#7
brandes.cm diyAudio Member Join Date: Sep 2009 Location: Wisconsin	Fairchild has a cross of KSA916 and KSC2316, this would be for the output stage. KSA916---->KTA1023 KSC2316---->KTC1027 The BD139 and BD140 will work for the output stage as well?

13th September 2011, 01:55 AM	#9
brandes.cm diyAudio Member Join Date: Sep 2009 Location: Wisconsin	Any ideas what value R173 is; on the driver board. R172 is a 550ohm and I believe R173 should be the same except it was fried beyond recognition.

13th September 2011, 02:38 AM	#10
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	560 ohms. If you have the DVD, the photos of a similar board are linked under item 12 on the class D - type 2 page. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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