[Boatanchors] HQ-180 Need Help

[Ed Shafer]

--- John Page <k4kwm at hotmail.com> wrote:

> I picked up a very nice looking HQ180. It even
> worked great. Now it is deaf 
> as a post. I can hear WLW on 700KC quite loud and a
> couple other broadcast 
> stations. Nothing on band 3. A little on band 4.
> Band 5 and 6 sometimes. 
> When a station is found it has very bad qsb.
> 
> I have done a complete alignment by the book using
> an HP-606A generator, HP 
> freq counter, and an HP-410B vtvm. All tubes were
> checked and reinstalled 
> one at a time. I even swapped out most of the tubes
> one at a time into my 
> HQ-170.
> 
> Alignment on these things is complicated but not
> that difficult and I have 
> gone through it many times.
> 
> It will work pretty good and then it will go deaf.
> 
> Sometimes, and this ought to be a clue, it wont work
> at all and I just click 
> the onoff switch on the power strip on the bench and
> it comes to life. But 
> so far I havent been able to find the problem.
> 
> Also all voltages and resistance measurements are as
> noted in the manual 
> charts.
> 
> Also, for what its worth, I hooked up an Ameco
> nuvistor preamp and when I 
> find a signal on the band, the preamp will really
> bring the receiver to 
> life. I am talking about s2 to 3 signals going up to
> 40 db over s9.
> 
> I am nowhere near the tech some of you guys are but
> can usually get one of 
> these things going.
> 
> Anybody got any suggestions? I am ready to get rid
> of the thing but hate to 
> as it was a present from my wife.
> 
> Maybe someone on the list works on Hammarlund and
> would let me ship it to 
> them for repair.
> 
> Thanks in advance for any help.   John
> 
> John Page K4KWM
> Hollow State since 1953
> (ex W8PKU,N8BLB,NA8O)
> 
> 
John,

I recently had a similar problem. The culprit turned
out to be IF Transformer T1. I had read on this list
and others how common this problem is. For more
information check out this link:
http://antiqueradios.com/forums/Forum16/HTML/000048.html

Regards,
Ed N5YX




		
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