2. amps-preamps
  3. 192217-84483

Conrad Johnson Mf-2500a amp and PF-1 Preamp Recap?

Does anyone have experience or educated knowledge on if it makes sense to recap these.  I've owned them for 6-7 years but at this point they are getting to be 20+ years old and was wondering if there would be benefit.  I've read somewhere CJ doesn't really like to do recaps on old gear so looking for some guidance.  Costs?

bcupari

Showing 3 responses by erik_squires

erik_squires
16,592 posts
 

PS - In the case of large PS film caps, those will probably outlast all of us.  CJ does use a mix in their preamps. Just replace the electrolytics.

erik_squires
16,592 posts
 

If we're talking PS caps, which really should be done every 25-30 years with modern caps, you don't need a schematic.  The caps will be labelled in big bold numbers. Any tech can do them.

I'd leave the signal caps alone.  At the point where you start chaning those you'll just want a new piece of gear. :)

erik_squires
16,592 posts
 

Depends how long you plan to keep them. If these are lifetime purchases for you, it’s worth doing. Not the signal caps but the power supply caps, ESPECIALLY in the amp as their failure can cause a cascade of failures that may leave you with a boat anchor instead of an amp, and take a speaker out with it.  With the latest caps, using high temperature variants, you coudl be set for 30 years.

Otherwise, sell them and let the next person deal with it.

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