[HAM] Recapping AO-29

[David Anderson]

Hi Vaughn,

Replacing the electrolytics is fine. Ceramic capacitors are generally 
very reliable, so I wouldn't replace them unless they test bad, i.e., 
leak DC. Waxed paper capacitors should be replaced. In these 
amplifiers, I often find that the resistors being far off their nominal 
value has a lot to do with sub-optimal performance and end up replacing 
a number of them.

David Anderson

On Monday, August 21, 2006, at 03:51  PM, Vaughn Smith wrote:

> Hello everyone
>
> I am going to rebuild the AO-29 in my '56 M-3. I need help trying to
> figure out what parts to replace - I assume all the electrolytic caps -
> do I do all the small ceramics as well? How about resistors or other
> parts? This M-3 had been in storage for 33 years up until 3 months ago
> and cosmetically is mint. The organ is working fine now, it's just a
> bit dull sounding and I want to make it as reliable as possible.
>
> When I got the M-3 the ginny was frozen, when I freed that up the
> percussion and pedals were out and most drawbars were dead. Deoxit took
> care of the drawbars and as I checked the tubes I found 2 that didn't
> even belong in any Hammond I know  of. After getting the right tubes in
> the right sockets she was 100% functional - and nothing exploded when I
> powered it up!
>
> Any help and advice you folks can give me is much appreciated - thank
> you...
>
> Vaughn Smith.