[Hammarlund] New York area service for HQ-129X ?

[GARDGORE@aol.com]

Eugene, If you have a burned resistor then it is highly likely you also have 
a shorted or very leaky capacitor on that circuit. Look at the bypass 
capacitors near the resistor to see if you see one that appears to have had wax 
melting out of it or looks like it has tiny blisters all over the outside. This is 
not necessarily conclusive of course and proper testing procedure is always the 
recommended thing to do but there is usually observable physical 
characteristics in any failure and often you can get close to the source of the problem by 
looking closely. Probably your next step would be to replace all the 
capacitors and perform a complete alignment afterwards for optimum results. Testing 
all the tubes to be sure of their condition before alignment is recommended 
also. You can get a good assessment of the overall condition of the circuit by 
measuring tube pin voltages or resistance to compare to the chart values. If the 
owners manual does not have a normal tube pin voltage or resistance chart then 
it would probably be available in the various servicing books such as Sam's 
or Riders. Leaky caps will often pull the B+ down at the test point or put B+ 
where it is not wanted on control grids, etc.

Regards, Greg Gore; WA1KBQ