Hi guys,
Thanks to everyone for the feedback.
I own several guitar amps but I am not a collector of amps. Most of the amps I own are vacuum tube designs both vintage and modern. I also own three transistor amps, one of which is a Roland JC-120. The other two solid state amps are perhaps "not so cheap" practice implements.
To quoit Jamie Wolfert "Solid-state amplifiers have suffered more than their fair share of disrespect. These Rodney Dangerfields of the amp world are much maligned, roundly ridiculed, and generally regarded as children's toys or cheap practice implements by the guitar playing community at large - See more at:
http://tonereport.com/blogs/tone-tips/five-solid-state-amps-that-dont-suck#sthash.glwrury2.dpufWhile what Jamie said is true for the most part I personally do not hold that opinion of "all" solid state guitar amps. The Roland JC-120 is a wonderful guitar amp for the type of music that it excels at, which for my use it is jazz. I would never use it to play "Texas style blues" because for that style of music it really does "suck".
Back to the issue at hand.
My personal belief is that the Vox T.60 has little value other than as a collectors item. I don't think I would want to use it live on stage unless I was in a " Beatles tribute band" and trying to look and sound just like the Beatles.
While it is true that "some" guitar players would not care what type transistors were installed in the amp the collectors would spot changes to original design in a second. Few "collectors" of vintage amps are going to spend the thousands of dollars that a Vox T.60 cost without knowing what they are buying.
So...if returning the amp back to "original" is the direction I need to go, the question becomes "how to do that". It goes without saying that it can not be returned to exact original because the Hunts capacitors are no long made and the transistors "perhaps" can be found but in what condition.
Mallory makes a 2500uf aluminum capacitor of the same size ( 4 inches by 1 3/8 ) and about the same color. That is as close as I have found, so I guess I could buy and try that. As I said I want to get the power supply working well first. The other option is to try to put an modern capacitor inside to old Hunts can. I have never tried to do that so I have no idea how much trouble that is to do well.
I guess like everything in electronics some compromise will result. Return to as close as possible to the original "unstable" design" which will result in the amp having greater value to collectors or changing the design to address the stability issues which will result in the amp having less value to collectors.
One issue is I do not know the precise voltage the mains transformer should be at going into the rectifier.
I ASSUME that the power supply/ rectifier is working based on the fact that Nate said he turned the amp on and it will play at very low distorted volume with a lot of hum. I have not turned the amp on yet. I also have not been able to find any of the original diodes for sale but perhaps the ones in the amp are OK.
Fun project with a lot of "I don't know issues" at the moment.....lol
Cheers,
Billy