Mac SE/30 making zipping and buzzing noises

dave at dave at
Thu Mar 26 02:13:12 CDT 2015

On Fri, 20 Mar 2015, drlegendre . wrote:

> On Fri, Mar 20, 2015 at 6:03 PM, Chuck Guzis <cclist at> wrote:
>> On 03/20/2015 02:08 PM, David Griffith wrote:
>>  Would that be the cause of a flicker in the crt?
>> To me, it sounds as if there's an arc going on in the FBT.  But that's
>> just from general knowledge--I have no experience with Mac SEs.
> It's been a while, but as I said, those power connections can cause all
> sorts of odd issues. Just carefully & completely re-flow them with some
> SN63 material (if you have it, else SN60 will do) and know that it's one
> issue you won't have to face.
> IIRC, one unit with that problem had flicker, static in the speaker and
> also system instability. It was either an SE/30 or a Plus, I had several of
> each model at the time.

Now for capacitor choice: would it be better to use surface-mount 
tantalums or through-hole electrolytics surface-mounted?

David Griffith
dave at

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