I had a M-B 300D like that ovloV, except it was built around a vacuum pump,
not a blower. 5 years old, and the dealer couldn't find and fix a vacuum
leak. Doorlocks, cruise, windows, climate control and it seemed like
everything else ran off that vacuum pump. Even the radio. Bucketabolts is
still running 31 years and 500,000 miles later (cuz it doesn't suck . .
oooooh baaad . . .)
If that xfmr is a DAHL type, try jamming some shims down between the core
and the bobbin. Btdt. 73 Dave W8FGX
----- Original Message -----
From: "Vic K2VCO" <vic@rakefet.com>
To: <Gudguyham@aol.com>
Cc: <amps@contesting.com>
Sent: Sunday, February 15, 2009 11:34 AM
Subject: Re: [Amps] Quieting SB-1000
> Gudguyham@aol.com wrote:
>> The AL-80A is the same amp as the SB-1000 and I had one in here for
>> repair
>> and it needed a new fan too. Needless to say I found out that changing
>> the
>> fan was no easy task. I refused to remove the transformer and
>> painstakingly
>> replaced the old fan with a new one, and indeed it was necessary somehow
>> to
>> glue or tape the nuts to the fan before installation. It truly was a
>> nightmare. I think I had to hack up the old fan pretty bad to get it
>> out. As I
>> recall it was a nightmare to replace that fan, but I did do it without
>> removing
>> the transformer. I recall making a slight groove in the side chassis so
>> I
>> could get a long screwdriver into the work area to tighten one screw.
>> Replacing
>> this fan is certainly NOT a job for the faint of heart! Needless to say
>> I
>> said a few choice words during this process! My mother would have
>> surely put
>> soap in my mouth if she heard me while doing this job!!
>> Vic, sorry about your transformer hum, but transformers usually hum
>> because
>> they don't know the words. :-) Lou
>
> Getting a good shot at the screws is hard, thanks to the filament and
> plate chokes. I
> think I had an easier time than you...the screws were not that tight to
> begin with so the
> old one came out easily!
>
> This reminds me of something my friend, who is an auto mechanic
> specializing in Volvos,
> told me. He said that he pictured the Volvo assembly line with a blower
> motor being
> lowered over a conveyor belt, at which point a bunch of workers come
> running up and build
> a car around it. He said that when the blower failed the best approach was
> to trade in the
> vehicle.
> --
> 73,
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco
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