[Hammarlund] HQ-110 Regulator tube acting up

[Al Schichler]

Update on HQ-110 OB2 problem:

I bought a new OB2 tube on eBay a couple weeks ago (actually 2 of them), 
and finally got around to taking the HQ-110 apart this past weekend and 
replacing the tube. (I figured that would be a good start).
That fixed the problem! No bright orange glow or oscillations anymore! 
At least now I don't have to spend a bunch of time trying to 
troubleshoot the problem. Sometimes it's just the regulator tube.

73,
Al


On 10/5/2012 11:41 AM, David Thompson wrote:
> Al,
>
> I have a HQ-110 and agree the OB2 does light up.  I did have one 
> duplicate your "fire" example years ago in another receiver and just 
> replaced it and had no further problems.  I don't recall if there was 
> any noise in the speaker/hadphones.
> 73 Dave K4JRB
>
> ----- Original Message ----- From: "Al Schichler" <aschichler at gmail.com>
> To: <Hammarlund at mailman.qth.net>
> Sent: Friday, October 05, 2012 10:31 AM
> Subject: [Hammarlund] HQ-110 Regulator tube acting up
>
>
>> I have an HQ-110 that has worked fine for close to a year, but when I
>> fired it up the other day, the OB2 tube was glowing and flashing really
>> bright orange. I could see it through the dial scales. Almost looks like
>> a fire is starting inside. I also can hear an oscillation in the speaker
>> when that happens.
>> I know it normally glows, but not enough to light up the whole inside of
>> the radio. I was just wondering if this might be a problem anyone else
>> has run into. I haven't taken the radio apart yet, so I don't know if
>> replacing the tube will fix the problem, or if something is shorting out
>> like a capacitor, and causing the tube to go crazy.
>> I might have another OB2 in my boxes o' tubes, but I haven't checked
>> yet. If not, I might be in the market for one.
>>
>> Thanks for any info,
>> Al, WA2S
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