[R-390] Rebuilding IF Deck

[Tisha Hayes]

I assume you are going to take care of the "killer cap" for the IF filters.
The paper caps I can see replacing. I do not know about digging into the
mica caps.

The resistors you are replacing with are all carbon comp or are they metal
film? Sometimes the metal film resistors have an inductive behavior that
will throw off a tuned circuit. Take a metal film and scrape off the coating
and you will find many are like a glass rod with a spiral channel where the
resistive component is filled in. It acts like a resistor and inductor in
parallel.

For carbon comps the only two killers I know of are either moisture or heat.
Unless they are off (if you need a cutoff value to decide what to replace or
not I guess 10% is good enough) I would not go tearing out the original
resistors.

The IF deck is tight enough to work in as it is. Just getting a fine tip
soldering iron in there is a challenge so you do not burn off insulation,
damage surrounding components or those unobtanium turrets.

-- 
Ms. Tisha Hayes/ AA4HA
-
*"Learning is not virtue but the means to bring us an acquaintance with it.
Integrity without knowledge is weak and useless, and knowledge without
integrity is dangerous and dreadful. Let these be your motives to action
through life, the relief of the distressed, the detection of frauds, the
defeat of oppression, and diffusion of happiness."  -- Nathanael Greene*