[Heathkit] Dumb speaker question

[Jim Shorney]

On Sun, 28 Feb 2010 13:53:04 -0600, Wayne Harrah wrote:

>What is the general concensus on that endeavor?  Is that a wise move
>once one decides to go thru the radio, to just replace every resistor
>and cap? Seems like a daunting job, but at the same time your reply
>makes it sound worthwhile.


If you have the manual, go though the rig and take voltage readings and
complare them with values that the manual expects. This can be your first clue
to where you need to look at resistor values. I find it convenient to lay out
the manual values on a spreadsheet and print it out, this provides a handy
chart for recording measured values and complaring to expected readings.

Power resistors (carbon comp. 1 watt, 2 watt, and higher) are the first to look
at. Then, any smaller ones that show visible signs of heat stress. Look at the
schematic, it will show you which ones are "isolated" by their role in the
circuit and can be measured without desoldering one end.

73

-Jim


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