[Hammarlund] Capacitor replacement

[Joe Connor]

 Just a few more things:
1. Al Parker's write-ups on http://www.boatachors.org  are well worth reading. They're informative and entertaining.
2. WARNING: the SP-600 Anthology points to one easy-to-access cap that should be replaced immediately. If it shorts, it can take out the filter chokes.
                        Joe Connor

    On Tuesday, March 1, 2022, 03:09:12 PM EST, Al Parker <anchor at ec.rr.com> wrote:  
 
 Hi Folks,
    Even tho' it's a bit crippled right now, the Hammarlund Historian 
website is still there, and has a very detailed article by Ray Vasek, 
W2EC, on the topic of refurbishing the SP-600's.  It includes a list of 
the capacitors (BBOD's) to be replaced.  Note that the factory realized 
2 things during the long run of SP-600's: first you don't need to use 
.022's, use .01's in their place, and second, due to reports of early 
failure, the few SP-600's after sn ~17,500 used disc ceramic caps 
instead of BBOD's.  I have been thru a cupla dozen SP-6700's in the last 
25 yrs, and have only seen 1 that had all discs from the factory.
    Some of my  work on them may be seen on the <www.boatanchors.org> website.
    Note that there are many model designations of the SP-600, and some 
have different no.s of capacitors in them.
73,

Al, W8UT
www.boatanchors.org
www.hammarlund.info

"There is nothing -- absolutely nothing -- half so much
worth doing as simply messing about in boats"
Ratty, to Mole

On 3/1/2022 12:17 PM, Joe Connor via Hammarlund wrote:
>  I'm with Wes and Loren on the clipping.
> 1. With the bathtubs, I didn't use a heat gun. I cut off the back of the cans with a Dremel cutting wheel, and the innards came out pretty easily. It looked good because the back of the cans are hidden by the chassis when the cans are reinstalled.
> 2. The most difficult part of the job is removing and reinstalling the RF deck. Both the SP-600 Anthology and the Radio Boulevard site give detailed instructions, but that might be something you'd want to ask about on here because I'll bet some of the guys in here have figured out some useful short-cuts.
> 3. The biggest pain was one isolated cap located in a pod by the RF deck. That one cap took an awful lot of work to get to.
> 
> 
>                               Joe Connor
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