CR-3020 Filer Capacitors

[Childof60]

Finally got around to restoring my CR-3020 after sitting on the shelf for four years. It has been a challenging project due to the weight, size, and limited documentation. The final issue is replacement of the 27,000uf filter capacitors. Does anyone have a take on a suitable replacement for these (huge) capacitors? I am not finding anything that fits.

A few comments concerning the CR-3020 restoration:
- This is a very well designed receiver. The attention to detail is impressive.
- The service manual (I have an original) is not great when it comes to tracing down problems. It is excellant in providing instructions on accessing the section boards for restoration.
- The schematic in the AK database includes the wiring harnesses that is not in the original manual.

 

[Childof60]

Decide to add a few pictures. The first is the finished restoration. The second depicts the complexity of the wiring harnesses.

 

[avionic]

replacement of the 27,000uf filter capacitors.

Dia. and Length of original OEM capacitors and the actual length area you have to work with. In millimeters preferred.

 

[avionic]

Oh.. What working voltage are the caps ?

 

[Childof60]

Oh.. What working voltage are the caps ?

80 working voltage. I am currently traveling and will not be able to measure the dimensions till next Sunday.

Btw you gave me great advice when I first purchased this receiver years ago. I have replaced over 125 capacitors, fuse resistors, MV-11 double diodes, and several voltage regulators for the restoration. Nice to have it (almost) done. Even with the original filter capacitors it sounds wonderful.

 

[avionic]

Even with the original filter capacitors it sounds wonderful.

Get and ESR meter....May be still within tolerance.