[Hallicrafters] update SX-101 issue

[Robert Sauvan]

OK,
I did a couple of quick checks before calling it a night. I have found a 
few resistors that I feel are needing to be replaced. I will dig into it 
more tomorrow. Thought my HX-50 was next to be worked on, but looks like 
I need to finish the SX-101 first. I will let you all know how I make out.

73-Bob-W0YBS


On 5/30/2014 8:37 PM, Jim Wilhite wrote:
> Bob what Mark speaks about is the voltage and resistance tables that 
> are in the manual.  If you have them, follow the directions that 
> accompany to make the measurement. That will check a number of them, 
> but there are others that cannot be checked in circuit.
>
> Most of the radios I fool with do not have that table so I look to see 
> where the circuit goes to decided how to measure.   For example a 
> resistor tied to a grid of the tube then grounded can be measured in 
> circuit.   It is time consuming but the only way I have.  I have never 
> looked at the 101 book but if it has that table as Mark says, then 
> follow it.  There may be resistors that you cannot measure and if that 
> is the case remove one lead from the circuit and use a meter to 
> measure it.  For example to measure a bleeder resistor you have a 
> capacitor in parallel which will take a bit of time to charge.  In 
> that case eventually you will read the bleeder value, maybe depending 
> on what else is in the circuit.  I remove the lead on the HV then 
> measure the resistor to ground.
>
> Now the nice thing is there is a multitude of guys here who have a lot 
> of experience with the subject radio.  If you have a question just 
> ask.  Any of them will be more than glad to work with you to get the 
> radio operating as it should.  That is a fine radio and will sound 
> very good when everything is right.
>
> Jim
> W5JO
>
> -----Original Message-----
>
> Well Jim,
> Im very glad you brought that up. That is certainly a question I was
> going to pose to the reflector soon. Now that you brought it up, I will
> pose my question now.
>
> So, walk me through them
> with patience please as everyone always has. I have read many articles
> from others saying they found numerous resistors out of spec. How does
> one do that? Do you snip one end of the resistor in a circuit to see if
> it is still in spec or is there another way without practically tearing
> the whole radio apart. Seems to me, a resistor in a circuit is going to
> have a different value than one that is just sitting on the table not
> hooked to anything. Im ready for the input. I would love to keep
> improving this radio to get it up to new like working condition if at
> all possible.
>
>
> Thanks-Bob-W0YBS
>
>
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