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Messages - RadioRay

#1
Hi again.  An engineer friend of mine is trying to look at my amp.  Has anyone had any hands on experience working on one of these?  Any source of information other than the original schematic?  Any input would be very much appreciated.

Thanks, Ray
#2
Amplifier Discussion / Re: Kay 708 amp repair
August 19, 2019, 08:33:12 AM
Hi, I'm splitting up the photos.

#3
Amplifier Discussion / Re: Kay 708 amp repair
August 19, 2019, 08:28:10 AM
Hi, I'm going to try it again
Here are the pictures,
Ray
#4
Amplifier Discussion / Re: Kay 708 amp repair
August 19, 2019, 03:59:13 AM
Hi,  Somehow I can't see my first post so I am starting over.

I have a Kay model 708 amplifier, first question - has anyone had any experience with this amp?  its the big brother to models 704.  It was the top of the line for Kay early solid state amps according to the Kay literature I have seen.  The vibrato just thumps loud with no control.  Any advice on finding transistors for this puppy?

Your comments are appreciated.

Ray.

I am adding pictures of the amp and a schematic and BOM.


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#5
Amplifier Discussion / Kay 708 amp repair
August 17, 2019, 11:54:42 AM
Hi!  I recently picked up a Kay model 708 amplifier.  I believe this was one of the first SS amps.  Problem I am having is the vibrato thumps all the time and the controls  have no effect.  I have the schematic for the amp.  Not sure where to start on this.

Thanks for you assistance.



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