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Help with Onkyo Reciever no output

  • Thread starter Boboranntrottier
  • Start date
B

Boboranntrottier

Jan 1, 1970
0
I'm working on a Onkyo A-SV610 Pro receiver with no outputs . I've tracked
it down to not getting a low signal from the UDP6345 that controls the
output relays.
I can short out an output and enable the main or remote speakers so I know
I'm on the right track. It gets clocks and inputs when I hit the mail
speaker switch.
The odd thing is that the remote speaker button don't seem to be working
either by generating input to the 6345 or by lighting the remote label on
the display.Before I assume its the 6345 or rip apart the front panel I
thought I'd see if anyone has seen this before and can explain why the
remote speaker switch wouldn't be working
Also any suggestions on where to get the UDP6345 would be appreciated
Thanks
in Advance
BOB
 
A

Arfa Daily

Jan 1, 1970
0
Boboranntrottier said:
I'm working on a Onkyo A-SV610 Pro receiver with no outputs . I've tracked
it down to not getting a low signal from the UDP6345 that controls the
output relays.
I can short out an output and enable the main or remote speakers so I know
I'm on the right track. It gets clocks and inputs when I hit the mail
speaker switch.
The odd thing is that the remote speaker button don't seem to be working
either by generating input to the 6345 or by lighting the remote label on
the display.Before I assume its the 6345 or rip apart the front panel I
thought I'd see if anyone has seen this before and can explain why the
remote speaker switch wouldn't be working
Also any suggestions on where to get the UDP6345 would be appreciated
Thanks
in Advance
BOB

If you do force the relays, does it actually work ok ? Are you sure that the
driver chip is not failing to be enabled, because a fault condition such as
an output DC offset is being detected ?

Arfa
 
B

Boboranntrottier

Jan 1, 1970
0
If I ground the outputs of the chip the appropriate relay closes and it
sounds great. The inputs all appear to be as expected Enable high clock and
input when I push the button . so I'm thinking its either the chip or
somehow the remote speaker selector not working is corrupting the input
signal such that the internal shift register is out of sync.
I might put a logic analyzer on it tomorrow as a final test
Bob
 
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