UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Panasonic NV-F55B

John123 · 14th Mar 2019, 8:16 pm

Hello Steve,

Welcome to the forum! I believe the values are actually on the block diagram for the PSU, so for C1109 it says 35V47 (35v / 47uf), and for C1111 it says 63V47 (63v / 47uf).

It's quite possible that C1111 may have failed, as the existing cap is rated under 63v. Also, the fact that both caps have a temperature rating of 85C is not ideal, as power supplies tend to run quite warm. It's possible both may have failed due to this, even though C1109 is actually a little above spec (50v instead of 35v).

I think for continued reliability it will probably be easier to go with blanket replacement of all the caps. I normally use Panasonic FC series from a reputable supplier such as CPC Farnell, RS Electronics, Mouser etc.

Best to avoid no-name caps off eBay, and also branded ones from China as they are likely to be fake. Hope that helps!

14th Mar 2019, 8:16 pm	#2
John123 Heptode Join Date: Jan 2007 Location: Luton, Bedfordshire, UK. Posts: 891	Re: Panasonic NV-F55B - PSU Capacitor replacement query. Hello Steve, Welcome to the forum! I believe the values are actually on the block diagram for the PSU, so for C1109 it says 35V47 (35v / 47uf), and for C1111 it says 63V47 (63v / 47uf). It's quite possible that C1111 may have failed, as the existing cap is rated under 63v. Also, the fact that both caps have a temperature rating of 85C is not ideal, as power supplies tend to run quite warm. It's possible both may have failed due to this, even though C1109 is actually a little above spec (50v instead of 35v). I think for continued reliability it will probably be easier to go with blanket replacement of all the caps. I normally use Panasonic FC series from a reputable supplier such as CPC Farnell, RS Electronics, Mouser etc. Best to avoid no-name caps off eBay, and also branded ones from China as they are likely to be fake. Hope that helps! __________________ Regards, John