[Hallicrafters] update SX-101 issue

[Robert Sauvan]

How high or how low can the resistor be before one figures it needs to 
be replaced?


Thanks-Bob



On 5/30/2014 7:54 PM, Charlie T, K3ICH wrote:
> Generally, Carbon Composition resistors age high in value.  Sometimes 
> showing twice their marked value.
>
> I would recommend an auto-ranging meter for all the trouble shooting. 
> ( a cheap one at Harbor Freight or MCM Electronics is perfectly 
> adequate)  That way you're not wasting time flipping the range switch 
> to measure the various resistors (or voltages). Without caring where 
> they are in the circuit, just put the leads across the resistor you 
> want to check and read the meter. If it's WAY low of what it is 
> marked, chances are there a low resistance, maybe a coil or choke, 
> across it.  If it's at or higher than the marked value, it's probably 
> an accurate reading.   To be sure what you're reading is in fact the 
> value of the resistor, it's time to identify it in the circuit.
>
> Get some blue masking tape and stick a piece on any part that's 
> suspect. Check all you can get to and go back later to figure out 
> where they are in the circuit.
>
> There's obviously a lot more to restoring those boatanchors.
>
> Good luck and have fun.  It'll be quite satisfying to find those "bad" 
> parts and replace them.
>
> 73, Charlie k3ICH
>
>
>
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