oh man, say it isn't so! This problem seems to be hit and miss from those that have the ex mod. I'm expecting my C back from decware soon, after having the ex mod. A loud hum would be very disappointing. I know zip about this but there has to be a solution...right? Don

What do you mean by mishaps?  Obviously something is wrong.

Dave

[quote author=selmerdave  link=1105725338&amp/0#3 date=1105727672]
What do you mean by mishaps?  Obviously something is wrong.

Dave
[/quote]

Well I'm going to try to make a very long story short.

When I called Steve to determine delivery time he informed me that the unit was delayed due to a small blem on the case. He gave me 2 options I elected the second.

Upon delivery the unit wouldn't power up, after trying everything I called Steve. He thought it was a bad rectifier that had blown the fuse. He told me to remove the bad fuse and replace it. I got home promptly popped out the IEC and voila! No Fuses.  

Called Steve again explained the unit was shipped without fuses, he apologized and told me the type and amperage so  I promptly picked them up at RS and gleefully popped one in.
Voila! All tubes glowing except the rectifier. Upon closer examination I noticed bits of metal sloshing around inside.

Back to Steve, he overnighted a rectifier (UPS delivered 2 days later, but that's another story) It arrived yesterday and ...well you're up to date.

Couple of points I'd like to make:
1) I bought a SE84C with the EX mod I was not a previous owner.
2) Steve was very accomodating and I sensed he felt badly that being a new customer I had this type of experience.

From all of the posts I've read on this forum Decware seems to build a quality product. I believe my experience is unique and hope that this latest glitch is just that and that I can start experiencing some of the thrills I've read about.

All of your comments, input, feedback is appreciated.
Fred

Fred...do not necessarily need a power conditioner...just be sure the outlet would not be 'noisy' with any equipment. In other words are you confident the outlet and/or power strip would not be contributing to the noise. Heck I use a power strip for components and just plug the amp into the wall myself. Also wasn't suggesting to start rolling tubes but it is always good to have spares just in case one of them may be not quite up to par.
take care

Hi Fed
Sorry to hear of your troubles. I too had an 84C, which i upgraded to a CS and then fitted the EX transformers which revealed a hum in the system. Eddie Vaughan has kindly made some suggestions and as soon as I have the parts I'll wield the soldering iron.
It sounds like you don't do any diy, and with the noise coming from the transformer too I think you should box the amp up and send it back to Steve for a check-up. I feel sure that's what he would want you to do. You need to send it back to establish if it's a problem with the amp or your setup at home. I know you probably don't want to send it back but you'll keep the amp for many years and a few weeks more won't matter in the long run.
Best of luck.
Steve

I gave in and sent the unit back. Awaiting Steve's response.
Fred

I'm also interested since my measured hum level is 2 to 3 times the level specified for this amp.