Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: pbman1953 on February 09, 2018, 06:15:48 pm

Title: Cap value question
Post by: pbman1953 on February 09, 2018, 06:15:48 pm

I have a Sunn 2000s that had some noise when turning on but worked just fine. But tapping the case had the same noise.


I found that a cap's ground broke free and the lead is too short to be re-soldered.


 This cap is a 20mf at 500 is in parallel with another 22mf at 500. The total is 42mf at 500v. I have a JJ- 80MF at 500. Can I take out both and use the JJ?




Thanks

Title: Re: Cap value question
Post by: shooter on February 09, 2018, 08:04:21 pm

should be fine, the 30uF might need to stay close to value depending on the Rec tubes finicky factor.

Title: Re: Cap value question
Post by: pbman1953 on February 09, 2018, 08:17:36 pm

Here are the 3 previous stage values




110 at 600


50 at 700


22 at 500


I'm using webber copper caps

Title: Re: Cap value question
Post by: pbman1953 on February 10, 2018, 01:03:16 pm

Any other comments after posting my stage values?