Seduction problem

[wesleyHK]

Hi,

I haven't been on this forum for over 10 yrs.  I've got problem, I assume this is the correct place to ask about my problem?

I have a Seduction with C4S upgrade that I built over 10 yrs. ago.  It's been stored for many years, but I started using it last week with no problems.

Yesterday I was using it and the all of the sudden I get a lot dadadada sound, loud enough to have to turn it off.

I looked under the unit.

The LED's at tube pin 3 and 6 are flashing.  So are two on the C4S board.

I switched out the tubes for another pair, but still same problem.

I don't think I have the manual anymore, since I moved back to the states 3 yrs. ago. 

I have no idea how to troubleshoot it.

I hope someone can help.

Regards,

Wesley

[Paul Birkeland]

Hello Wesley,

Yes, this is certainly the place to post.

What you are describing would likely come from a loose connection or unsoldered joint somewhere in the Seduction.  You could power up the Seduction with nothing attached at the inputs and outputs, then carefully poke around with a wooden chopstick to see if you can find a spot that changes the behavior of the preamp.  That will help narrow down your resoldering efforts. 

-PB

[wesleyHK]

ok, thanks Paul.

[wesleyHK]

Hi Paul,

I fixed it.  It was a switch I put in many years ago to allow for setting the input loading.  I had it in the center position, it should have been in one of the two other positions.  Stupid me forgot after all these years.

I have 2 phono amps and a pre-amp I built over 10 years ago and they are still going strong.  I've never had any problems whatsoever.  Your gear is the best.

Thanks again for your help.

Wesley

[Paul Birkeland]

It sounds like it's time for a switch with no center position!