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

John123 · 14th Mar 2019, 10:51 pm

Indeed, the 1uf start-up cap is a common failure in Panasonic decks of this era, although blanket replacement would 'make-good' any capacitor-related issues.

On saying that, there are numerous things that can go wrong with these PSU's, such as failed IC's, shorted Zener's, poor earthing of the screening can/ dry joints etc, which can make repair rather challenging.

Anyway, start with the caps first, and yes 105C ones to be fitted. I should've made that a little clearer in my initial post!

Common fault list for this model attached:

14th Mar 2019, 10:51 pm	#6
John123 Heptode Join Date: Jan 2007 Location: Luton, Bedfordshire, UK. Posts: 891	Re: Panasonic NV-F55B - PSU Capacitor replacement query. Indeed, the 1uf start-up cap is a common failure in Panasonic decks of this era, although blanket replacement would 'make-good' any capacitor-related issues. On saying that, there are numerous things that can go wrong with these PSU's, such as failed IC's, shorted Zener's, poor earthing of the screening can/ dry joints etc, which can make repair rather challenging. Anyway, start with the caps first, and yes 105C ones to be fitted. I should've made that a little clearer in my initial post! Common fault list for this model attached: Attached Thumbnails __________________ Regards, John