Rickenbacker E12 Problems

Gibson, Valco, Gretsch, and more

Re: Rickenbacker E12 Problems

Postby Glowtube59 on Sun Oct 09, 2016 12:09 pm

It might come down to the Power Transformer being it's a little undersized for the job I think.
Glowtube59
Peasant
 
Posts: 38
Joined: Fri Sep 30, 2016 10:40 pm

Re: Rickenbacker E12 Problems

Postby stratele52 on Sun Oct 09, 2016 12:19 pm

Glowtube59 wrote:It might come down to the Power Transformer being it's a little undersized for the job I think.



It could be many things, can't say without more test,

One 6V6 do not need a big transformer. Your voltages seem good except on 6V6 pin 8 ( power transformer is the Power Supply transformer, not the Output transformer you know )

How many years you play with this amp ? All original ?

Pictures may help
stratele52
Knight
 
Posts: 1904
Joined: Sat Aug 21, 2010 9:35 am
Location: Québec province, Canada

Re: Rickenbacker E12 Problems

Postby Glowtube59 on Sun Oct 09, 2016 10:56 pm

Yes I have it about three years with no problems, I'm not sure but I think it might be the original can cap which I going to order with two F&T 47uf 500Volts
and try that.
Glowtube59
Peasant
 
Posts: 38
Joined: Fri Sep 30, 2016 10:40 pm

Re: Rickenbacker E12 Problems

Postby stratele52 on Mon Oct 10, 2016 8:15 am

Glowtube59 wrote:Yes I have it about three years with no problems, I'm not sure but I think it might be the original can cap which I going to order with two F&T 47uf 500Volts
and try that.



Defective fiter caps make hum, If you don't have hum you'll loose your time and money and you do not fix the amp

Read how many AC volts you have on your DC power supply where you read 308 volts DC . Less than 0.5 volts AC, filter caps are good.
stratele52
Knight
 
Posts: 1904
Joined: Sat Aug 21, 2010 9:35 am
Location: Québec province, Canada

Re: Rickenbacker E12 Problems

Postby Glowtube59 on Mon Oct 10, 2016 2:46 pm

There is a bit of hum now.
Glowtube59
Peasant
 
Posts: 38
Joined: Fri Sep 30, 2016 10:40 pm

Re: Rickenbacker E12 Problems

Postby stratele52 on Mon Oct 10, 2016 3:11 pm

You can leave the can there and solder two F&T caps on can's solder lugs.
stratele52
Knight
 
Posts: 1904
Joined: Sat Aug 21, 2010 9:35 am
Location: Québec province, Canada

Re: Rickenbacker E12 Problems

Postby JJman on Thu Oct 20, 2016 12:26 am

A friend's Masco had extra capacitance added to its can at some point, stressing the rectifier tube. The tube eventually shorted and took out the power tranny with it. I put it back to specs and there is no hum.
-If it says "Vintage" on it, it isn't.
JJman
Certified
 
Posts: 123
Joined: Sat Dec 22, 2012 2:30 am

Previous

Return to Miscellaneous American Amplifiers

Who is online

Users browsing this forum: Bing [Bot] and 2 guests