Best Way to cut Supply to USB Socket

[fmak]

I would like to cut the 5V supply on Pin 1 of a USB socket on a usb to spdif converter.

I can:

1. Unsolder the socket and cut the pin, then resolder back - I don't really want the hassle.

2. Cut a cable and reconnect the D+, D- and Ground lines - messy cable and easy.

3. Is there a better way like being able to get a molded adaptor or a cable?

[janneman]

Originally Posted by fmak

I would like to cut the 5V supply on Pin 1 of a USB socket on a usb to spdif converter.

I can:

1. Unsolder the socket and cut the pin, then resolder back - I don't really want the hassle.

2. Cut a cable and reconnect the D+, D- and Ground lines - messy cable and easy.

3. Is there a better way like being able to get a molded adaptor or a cable?

?? Cut the track to the pin...?

jd

[fmak]

Originally Posted by janneman

?? Cut the track to the pin...?

jd

I guess I should have wriiten it. If there is a track to be cut, I would have done it! It's a multilayer board.

[janneman]

Originally Posted by fmak

I guess I should have wriiten it. If there is a track to be cut, I would have done it! It's a multilayer board.

OK. What I have sometimes done is just to cut the connector pin above the board. You can easily repair it if necessary, but I don't know whether it is possible with your type of plug on the board.
Tell me, why do you need to cut that supply?

jd

[wwenze]

Cut a small piece of tape...

Tape it over pin one

Add: Suggest taping the pin on one end of the cable, so the devices are left untouched. And Type-A connector is easiest to tape compared to type-B and mini/micro.

[fmak]

Originally Posted by janneman

OK. What I have sometimes done is just to cut the connector pin above the board. You can easily repair it if necessary, but I don't know whether it is possible with your type of plug on the board.
Tell me, why do you need to cut that supply?

jd

I want to supply clean power to the adapter. The idea of using tape seems good and no, there is not sufficient protrusion to cut pins.

[jkeny]

Fred,
I did up a socket which my USB cable plugs into D+, D- & ground straight through - power & ground connected to external supply- there should be an improvement on the Musiland even as a transport!

This way I can plug the cable straight into the DAC or through the socket with external power & then to the DAC

[fmak]

Originally Posted by jkeny

Fred,
I did up a socket which my USB cable plugs into D+, D- & ground straight through - power & ground connected to external supply- there should be an improvement on the Musiland even as a transport!

This way I can plug the cable straight into the DAC or through the socket with external power & then to the DAC

Good idea. However, in the USD version, bus power is regulated down to 3.3 and 1.2V via 1117 regulators and I think this accounts for the 'good' sound. It is these regulators that need improving and I may get round to it. The onboard closk is also disntinctly 'inferior' when compared to a reclocked output into my UA2192 which also offers a clock cleaning option.

The dac version may be different.

[eclectic2k]

Originally Posted by fmak

I would like to cut the 5V supply on Pin 1 of a USB socket on a usb to spdif converter.

I can:
1. Unsolder the socket and cut the pin, then resolder back - I don't really want the hassle.
2. Cut a cable and reconnect the D+, D- and Ground lines - messy cable and easy.
3. Is there a better way like being able to get a molded adaptor or a cable?

strip back some of the cable, open it up, and cut only the 5v wire. not as messy as cutting and patching the entire cable. Shouldn't be too difficult, still requires a bit of work. Can't think of anything better of the top of my head.

[eclectic2k]

Originally Posted by fmak

I want to supply clean power to the adapter. The idea of using tape seems good and no, there is not sufficient protrusion to cut pins.

of course there is this:
http://www.diyaudio.com/forums/pc-based/151844-usb-galvanic-isolation-post1927483.html

then you get to supply a clean ground and power to the peripheral/DAC...