McMurdo Silver Maserpiece V filter chokes

[Tony Peterson]

One of the filter chokes in my Masterpiece V has started buzzing loudly. I've tried tightening the screws, shimming the winding and dipping the choke in wax all with little success so my thought is to have the choke rewound. 

Does anyone know where I would find:

1. Where I would find the value of the MP5's filter chokes?

2. Who would perform this type of service?

3. Would it make sense to have both filter chokes rewound even though only one is currently acting up?

Thanks,

-Tony

[David C. Poland]

From MS photos, the MS chokes look a lot like Scott chokes. Might be your alternative at a reasonable cost. From all my Scotts over the years, never had a choke buzz like you describe.

[Tony Peterson]

Thanks for the tips. As soon as I get the Patterson that I'm working on now off the bench I'm going to follow Kent's suggestion then contact Heyboer. Any ideas what the current rating should be?

[Scott Seickel]

Try these guys.

https://www.heyboertransformers.com/

[Robert Feenstra]

You might try Heyboer Transformer in Grand Haven, MIchigan.  It would be pricey I'm sure.  You can always do it yourself.  It's not that hard.  I've done several output transformers and a power transformer.

www.heyboertransformers.com

[Kent King]

Gerry has had some health issues and hasn't been online much in the past year or so. 

The filter choke is going to be pretty hefty...if we compare to a similar Scott, we have a 10H and a 30H choke in the power supply. Measure the resistance of the buzzing choke. For reference, the Scott 10H choke is 50 ohms, and the 30H choke runs about 150 ohms...so you can get a really good estimate based on the DC resistance. 

As for rewinding, I don't know who is doing that work anymore, I'd ask on the Antique Radio Forum (or search there). I would not rewind a working unit, the buzzing is a fairly unusual issue, fixing that unit alone should be sufficient.

Kent

[Dave]

Our friend Gerry Steffens would know, I have not heard from him.

[Tony Peterson]

No Dave. No luck so far. The radio's currently on "the back burner". If I do find anything out I'll post it here.

[Dave]

Have you found answers to your questions Tony, I have similar situation with my MP6.