Hi.
I'm building a 4ch ucd400oem amp (driven by two smps400a400) + 4 channels of ucd250lp (one smps400a180).
I made input buffers pcb and all, that part seems to work good (exept one of the ucd400 input buffers that makes the connected module ticking (sound from the speakers) about once a second, no other sound than that), its like some protection is kicking in, cant get whats wrong with it, maybe I'll have to rebuild a new one from scratch.
And I have a problem with one of my ucd400oem modules. it is dead silent, no sound what so ever. I bought 4 of them on ebay and the other ones works as expected. If i connect one working ucd400 oem to the input buffer then it works, switching place with the ucd400oem that not works and there is no sound at all. So there have to be som wrong with the module.
I also have one smps400a400 that has negative rail shorted to gnd. measured when not connected.
I have just sent a question to hypex regarding the smps but I know it will take a while before I get an answer so I thought I could ask hare also. What could be wrong with this one? I have tried to see if there are some metal pieces on the pcb shorting the - and gnd but could not find anything.
This really off putting because I really wanted this to work, already spent a lot on this both time and money. Any help would be appreciated!
some pictures of my input buffers.
Thanks /Joel
I'm building a 4ch ucd400oem amp (driven by two smps400a400) + 4 channels of ucd250lp (one smps400a180).
I made input buffers pcb and all, that part seems to work good (exept one of the ucd400 input buffers that makes the connected module ticking (sound from the speakers) about once a second, no other sound than that), its like some protection is kicking in, cant get whats wrong with it, maybe I'll have to rebuild a new one from scratch.
And I have a problem with one of my ucd400oem modules. it is dead silent, no sound what so ever. I bought 4 of them on ebay and the other ones works as expected. If i connect one working ucd400 oem to the input buffer then it works, switching place with the ucd400oem that not works and there is no sound at all. So there have to be som wrong with the module.
I also have one smps400a400 that has negative rail shorted to gnd. measured when not connected.
I have just sent a question to hypex regarding the smps but I know it will take a while before I get an answer so I thought I could ask hare also. What could be wrong with this one? I have tried to see if there are some metal pieces on the pcb shorting the - and gnd but could not find anything.
This really off putting because I really wanted this to work, already spent a lot on this both time and money. Any help would be appreciated!
some pictures of my input buffers.
Thanks /Joel
Hi,
i am building the lx521 and would like to ask a question concerning hypex. oplug seems to be down.
thanks
i am building the lx521 and would like to ask a question concerning hypex. oplug seems to be down.
thanks