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For sale ETI477 PCB's
For sale ETI477 PCB's
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Old 20th June 2020, 01:55 AM   #1
Leinster Lad is offline Leinster Lad  Australia
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Join Date: Jun 2013
Location: Perth
Default For sale ETI477 PCB's

Getting geared up to restore my old ETI Series 5000 power amp (which uses the ETI 477 boards )

Lots of learning from various forums with circuit modifications and updated components, so I thought "why not" !


I was not happy with the original boards, as some tracks lifted when I depopulated them and there was also some scorching around the BF469/470's

So, after a LOT of pain etc, I managed to copy the board design, created the Gerber file and had some (10) new boards made.


These new boards are not drilled as I will use the old board as a drill template, and I have some mods that I want to try that require new holes anyway.


So if anyone needs a new board or two, hit me up ! Pics attached.
Attached Images
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File Type: jpg IMG_1822.jpg (515.2 KB, 111 views)
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Old 21st June 2020, 04:36 AM   #2
myl is offline myl
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Join Date: Mar 2015
For sale ETI477 PCB's
I m interested for the pcbs
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Old 22nd June 2020, 09:57 AM   #3
janusz is offline janusz  Australia
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Join Date: Oct 2004
Location: Perth
Leinster,

How different are these to the original pcbs? What exactly are the improvements?

Thank you,
cheers,
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Old 22nd June 2020, 12:20 PM   #4
Leinster Lad is offline Leinster Lad  Australia
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Join Date: Jun 2013
Location: Perth
Boards are an exact copy.
They are undrilled at this time.


Plenty of improvements and ideas in these forums.
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Old 22nd June 2020, 12:21 PM   #5
Leinster Lad is offline Leinster Lad  Australia
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Join Date: Jun 2013
Location: Perth
Like the 18v zener.
different take off point for the NFB
various caps to help stop oscillations
 

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