More for Bernie on SB102

W5EUQ w5euq at VERIZON.NET
Tue Oct 3 19:37:13 EDT 2006


One thing that concerns me is that Bernie says he's performed the 
alignment fastidiously(spelling?) and feels it has to be something 
else.  This is one may be one of those "dogs" that one gets and has real 
problems finding the problems.

Bernie,   MORE TO SUGGEST
> In my case,  if this happens to me, I then go back and get some Radio 
> Shack P5 or D5 DeoxIT and spray it on a cue tip and clean all the 
> switches again, making sure they make good contact.  Then I clean all 
> the pots.  Then I make sure all the "grounds" go to ground.  Sometimes 
> it takes using some 1/8" to 1/4" braid and jumper all the grounds to a 
> good ground and things seem to clear up then. Then go back through 
> alignment again and the radio magically works....
>
> These rigs are a victim of OLD AGE and deterioration. Replacing or 
> re-conditioning the main parts like switches, pots and in some cases 
> Xtals, coils and don't forget to go through the resistors and replace 
> any that are over 15% out of specs.  Swap tubes, ground tube shields, 
> replace the final RF choke, check the variable caps for "uniform 
> plates" on both stator and rotor plates.   Check caps on a cap tester. 
> Even Disc ceramics change or open up.  All that's left is the VFO... 
> that's another subject.
> I'm sure there is more but my wife just called me to dinner....
>
> Bob 
> PS when you find the problem(s)... if you don't let us know what 
> youfound then we will disconnect your connection to the Heath List 
> Server.... HI...
>

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