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No sound coming out from my 9100es via 2 channels output

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cwt108

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  • Posts: 30
No sound coming out from my 9100es via 2 channels output
« on: 9 Jun 2007, 09:42 am »

After I upgraded to Mullard 5AR4 and enjoyed for a few hours, the two-channel outputs stop working. Six-channel outputs are still fine. Could the problem be the 5687 tubes? They seem working fine (light is on)... I do find out one thing. When I turn up the volume, I could hear the music faintly...
Does it mean bad 5687 tubes? I do not have any 5687 replacements on-hand so that I could try it out.

Anyone has similar experience?

Any feedback?

Appreciate.
« Last Edit: 9 Jun 2007, 04:18 pm by cwt108 »
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ted_b

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  • "we're all bozos on this bus" F.T.
Re: No sound coming out from my 9100es via 2 channels output
« Reply #1 on: 9 Jun 2007, 06:36 pm »
It's what I hear (no music except faint) when I forget to turn on the outboard PS.  Maybe the umbilical to the 9100 is loose?
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modwright

Re: No sound coming out from my 9100es via 2 channels output
« Reply #2 on: 10 Jun 2007, 05:35 am »
Sounds like no B+ voltage to the tubes, but there is obviously heater voltage (tubes light).  Check the umbilical connection and contact us to help you trouble-shoot this.

Thanks,

Dan
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