[MRCA] Capacitor issues

[Al Klase]

Hey Ray,

I'm just curious, who made that set?

Al

Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

On 6/2/2016 8:54 AM, Ray Fantini wrote:
>
> So a 1936 USCG R-104 receiver followed me home from Dayton, it’s very 
> clean and in no way modified and the intent is to build an external 
> power supply and case and have it working. One of the problems is that 
> it uses two huge square 4 mfd @400 volt capacitors in its power supply 
> input along with a filter choke and both of the capacitors have leaked 
> a lot of oil out of the can and all over the chassis. In the picture 
> you can see one of the offending capacitors that’s been removed and 
> cleaned up but I don’t want to put it back in being it will just leak 
> more oil over time.  It still checks good with only a small amount of 
> leakage but would not trust it anyway. So the big question is what’s 
> the best way to open this up and remove the guts and substitute the 
> innards with a modern capacitor? It appears that the original can is 
> soldered all around but I would prefer to keep the original external 
> appearance and finish being everything in the radio matches so heating 
> this up with a torch would be issues also don’t know if the oil is 
> flammable. Maybe the answer is cutting around the base of the can but 
> at this point have no idea on how? maybe a dermal tool with a cutting 
> wheel? Is it possible that if the base of the can is heated with a 
> torch that the entire contents can be dropped out? Another option may 
> be to solder up the small hole on the outside of the capacitors can 
> and install it back and keep it original? Have lots of questions but 
> no answers at this point. In the past I would have just replaced the 
> offending parts with modern ones but in this case wanted to keep the 
> receiver looking the same so that’s the source of the dilemma.
>
> Ray F/KA3EKH
>
>
>
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