Several of the HV electrolytics in my Titan 425 failed two weeks ago. At
first I looked for exact replacements for the Mallory CGS originals. As of
last week, Digi-Key and Newark didn't have them. Mouser listed them ($23
each) but did not have them in stock. Allied had them in stock at $21.
I ended up deciding not to go with exact replacements but with an upgrade.
I replaced them all with 105C-rated 470uF Nichicon caps, much smaller than
the originals. It required some small mechanical mods to make them work,
but my Titan is now humming along nicely again. I also replaced all the 2W
carbon composition bleeder resistors (they had all drifted higher in value
by varying amounts) with 3W flameproof metal film resistors.
73,
John W1JA
John Pelham
E-mail john@radiophile.com
Web site http://www.radiophile.com
----- Original Message -----
From: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
To: "DC" <daclark56@hotmail.com>
Cc: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Tuesday, February 19, 2008 2:44 PM
Subject: Re: [TenTec] Titan 425 shelved for 10 years
On Tue, 2008-02-19 at 13:58 -0500, DC wrote:
Hi Doc Johnson (sorry, I just had to!) what is a good source for the
electrolytics? Could you possible supply me with a part number,
location,
or url please.
Thank you very much.
73
KD8Z
I grab my Mouser catalog first. I like the Vishay-Sprague products. Just
scanning the catalog, probably their 36DY or 36DX series if screw
terminal computer grade. I see also Mallory CGS and Cornell Dubilier
DCMC computer grades. For axial lead types, the Sprague Atoms type TVA
have been good. www.mouser.com
Then I check Digi-Key www.digi-key.com. Have to spend more money with
them to keep getting the full catalog but its all on line, just slow at
28K dial up.
I've had troubles with Newark and they are way down my list. Allied also
has a good selection but they believe in higher prices. Both Allied and
Newark are slow to deliver. I've found I can get my parts from Mouser or
Digi-Key (surcharge for orders under $25 the last I looked) faster than
I could get quotes from Allied or Newark and I used to have an account
at Newark. After they treated me poorly a few years back, I told their
local rep about how I was treated and that the devil would be looking
for hot coffee or they would be the only place in the world that had the
part I needed before I ordered again. And now its rare that I get their
catalog. She remembers.
73, jerry, K0CQ
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