Help Wiring a Replacement Potentiometer for Sonic T - Page 10

AdamThorne · 23rd January 2007, 07:51 PM

"R01 should be right by L1, which looks as if it's right next to L2. Could it be under the plastic cup for the volume control plug? I usually tear that thing right out."

Hmm I had been intending to leave the plastic plug there, as I have not yet picked up a replacement pot. But I suppose I could wire it up off-board until I am ready to stop using the stock pot. I'll have a look mmm... maybe tonight or possibly... Thursday.

Pano - do you happen to recall what thread picklegreen mentioned the new t-amp in?

Buckapound · 23rd January 2007, 08:00 PM

You can take the wire cutters and start chopping away at that plastic thing--at least on the one end where the treasure (R01) may be hidden. Won't ruin its functionality, at least for temporary use.

--Buckapound

Zkronk · 30th January 2007, 08:54 PM

I have that new board too, and have no idea about where the input capacitors are located..

s_h · 7th February 2007, 02:15 PM

I have the same problem

Pano · 7th February 2007, 07:54 PM

And I don't even have one of the new ones yet.

Been out of stock. But should have one soon, I'll post info as soon as I can.

Anyone else with a new version, please post what you find.

AdamThorne · 8th February 2007, 05:21 PM

Here is a pic identifying (I think) R02, C3 and C4. I haven't been able to spot R01 yet. Note that R01 is not the same as R1. Hope you can make out the pic...

It has been suggested that R01 is under the big white plug. I have discovered that carving away the plastic of the plug while not carving away anything else is somewhat difficult (with the tools I have, anyway). Careful examination shows that the plug seems to sit pretty flush against the board, however, so I don't think anything is underneath it. But I guess you never know.

I am considering doing a "just the caps" mod rather than the initially planned "stealth" mod (as per panomaniac's site), since R01 is hiding from me. I'll have to go back and re-read the merits of the various mod styles to come to a final decision on that.

Adam

Zkronk · 8th February 2007, 05:44 PM

Are you sure that C4 on your picture is an input capacitor?
I tried to change that to one 2,2uF cap I've bought (I only tried with C4 alone, not both C4 and C3), and all I got was lots of noise in the speakers when i turned it on.
I'm 99% sure that it was the C4 on your picture i tried with. Or does both capacitors need to be the same value to make it work without a lot of noise?

audio1st · 8th February 2007, 07:56 PM

It looks to me as if C3 and C4 are still the same, R01 has become R3, R02 is still R02 and R1 is now R80. So for the Stealth mod, the only thing different seems to be R3 instead of R01..This is just my opinion from the photos as I don't have a new board..

audio1st · 8th February 2007, 08:55 PM

The new positions...

audio1st · 9th February 2007, 07:52 AM

Looks like they have added fuses. Nice fat power supply tracks.
Could it be a better board?

7th February 2007, 07:54 PM	#95
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	And I don't even have one of the new ones yet. Been out of stock. But should have one soon, I'll post info as soon as I can. Anyone else with a new version, please post what you find. __________________ Take the Speaker Voltage Test!

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23rd January 2007, 07:51 PM	#91
AdamThorne Rebel Samurai! diyAudio Member Join Date: Oct 2006 Location: Minneapolis, MN	"R01 should be right by L1, which looks as if it's right next to L2. Could it be under the plastic cup for the volume control plug? I usually tear that thing right out." Hmm I had been intending to leave the plastic plug there, as I have not yet picked up a replacement pot. But I suppose I could wire it up off-board until I am ready to stop using the stock pot. I'll have a look mmm... maybe tonight or possibly... Thursday. Pano - do you happen to recall what thread picklegreen mentioned the new t-amp in?

23rd January 2007, 08:00 PM	#92
Buckapound diyAudio Member Join Date: Feb 2006 Location: Chicago, IL	You can take the wire cutters and start chopping away at that plastic thing--at least on the one end where the treasure (R01) may be hidden. Won't ruin its functionality, at least for temporary use. --Buckapound

30th January 2007, 08:54 PM	#93
Zkronk diyAudio Member Join Date: Jan 2007	I have that new board too, and have no idea about where the input capacitors are located..

7th February 2007, 02:15 PM	#94
s_h diyAudio Member Join Date: Feb 2007 Location: Lund	I have the same problem

8th February 2007, 05:44 PM	#97
Zkronk diyAudio Member Join Date: Jan 2007	Are you sure that C4 on your picture is an input capacitor? I tried to change that to one 2,2uF cap I've bought (I only tried with C4 alone, not both C4 and C3), and all I got was lots of noise in the speakers when i turned it on. I'm 99% sure that it was the C4 on your picture i tried with. Or does both capacitors need to be the same value to make it work without a lot of noise?

8th February 2007, 07:56 PM	#98
audio1st diyAudio Member Join Date: May 2005 Location: Foxton, CAMBS..	It looks to me as if C3 and C4 are still the same, R01 has become R3, R02 is still R02 and R1 is now R80. So for the Stealth mod, the only thing different seems to be R3 instead of R01..This is just my opinion from the photos as I don't have a new board..

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