Guide to build Hypex Modules

[eclectic2k]

Originally Posted by alvinlim

Suggest you do a search on this in this website and hypx. UCD/Bruno recommends floating the ground. I have done this before and it works fine.

You can float it from AC safety ground yes, but you normally still need 0V reference return for those things that are not balanced. (that is, your "GND" pin on UcD should still be connected back to the supply, if not to AC GND) Anyway, I was trying to solve a problem that did not exist, as it had seemed at the time that his enable line was not seeing 0V.

Then we realized the issue was that he did not have enough voltage. (having overlooked the need for +/-50V) It maybe the enable line was OK after all.

Originally Posted by Duffy Moon

With the supplies in series, both modules work nicely (thanks eclectic2k). Perhaps the old modules worked with a floating ground, but the newer ones do not?

great to hear it worked out!

[Duffy Moon]

Originally Posted by eclectic2k

great to hear it worked out!

I have to say that they do sound marvellous, even through an old pair of Goodmans Magnum K speakers.

[souldriver]

hello together
After a prolonged stay abroad, I have finally time for my project.
I have finally done it ... it runs. With your help I did it. Thank you for that. Now I have a little problem. One of the 12 HxR regulator (on the right UCD module - HPR12) does not work, has no light. Here you can hear a small click and the blue LED flashes ... and I think something tastes like burnt. I immediately turned off. Does anyone know what could be the problem?

Thank you for your help

[souldriver]

...Nobody an idea?
Is this HxR Modul gone or do i have to check/try something else?

Thanks for an answer

[eclectic2k]

Originally Posted by souldriver

...Nobody an idea?
Is this HxR Modul gone or do i have to check/try something else?

Thanks for an answer

Nope, no idea. There is either a short circuit, an open circuit (bad solder?), or the regulator is toast.

If you bought the UcD with HxR's pre-installed, I suggest you email Hypex and possibly arrange a return for repair. (maybe a charge for repair though)

If you installed the HxR's yourself, I suggest rechecking solder joints and such. Maybe check with an ohmmeter all the power rails. And of course you can always arrange a return to Hypex for repair. (I had to have a UcD repaired by them myself. Aside from expensive shipping they were good about it)

good luck.

[souldriver]

thanks a lot eclectic
The HxR have been pre-installed. i will send a email to Hypex and see what they think about that. il keep you informed.

have a nice time and thanks again