[Hallicrafters] how to power up old radio with variac

[Roy Morgan]

At 12:11 PM 6/6/2007, chandlerh2 at aol.com wrote:
>... a wells-gardner rao3 ...how long should i let it sit on variac when
>powering upto see if everthing is working .

DON'T DO IT!

The paper caps are almost certainly all, repeat ALL, leaky or shorted.

The B+ filter caps are almost certainly DE-formed and will likely overload 
your power transformer and rectifier tube when the rectifier gets to 
conducting.

Re-form ALL electrolytics before applying normal power.  You will be better 
off by replacing them all, repeat all.

Replace ALL paper caps to avoid burned out dropping resistors and IF can coils.

If you insist on "bringing it up slowly on a variac" then you need to know 
that you can get your power transformer rewound at a cost of about $150 or so.

Good luck.

Roy




- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing
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