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Krolroger · 15th Sep 2021, 10:55 pm

Hi all,

I am fixing up a 1970s Beocord 5000 (the one with the terrible reputation) and I have a question about the run cap for the (dual) capstan motor.

The original was a 16uF 40 VDC bipolar cap. I have replaced it with a couple of back to back 105 degree Nichicon PW(M) series 33uF/63V caps (top of left hand photo).

The Matsushita motor runs fine (at about 50 degrees under load) and the new caps are slightly warm.

My question is, given the small size of these compared to the original, are they adequate (each 6.3 x 11mm) for the ripple current they have to handle, and for any power dissipation? They are rated at 250mA ripple current capability.

Thanks for any comments.

15th Sep 2021, 10:55 pm	#1
Krolroger Pentode Join Date: Nov 2017 Location: London, UK. Posts: 108	Beocord 5000 (Type 4715) Motor Run Cap Hi all, I am fixing up a 1970s Beocord 5000 (the one with the terrible reputation) and I have a question about the run cap for the (dual) capstan motor. The original was a 16uF 40 VDC bipolar cap. I have replaced it with a couple of back to back 105 degree Nichicon PW(M) series 33uF/63V caps (top of left hand photo). The Matsushita motor runs fine (at about 50 degrees under load) and the new caps are slightly warm. My question is, given the small size of these compared to the original, are they adequate (each 6.3 x 11mm) for the ripple current they have to handle, and for any power dissipation? They are rated at 250mA ripple current capability. Thanks for any comments. Attached Thumbnails