Part of the problem with this type of amp is that the delay turn on does not
make it easy to, say, operate the amp at a low voltage on a Variac to locate
problems at safe working potentials (and currents).
Not sure if anyone mentioned is, but, if you do have a Variac, you can separate
the primary and secondary wires from their connections and simply operate the
transformer from the Variac. Of course, use a fuse in the supply to the
transformer.
If you are able to ramp the Variac to full voltage without popping the fuse
(all high voltage wires suitably and safely contained1) then your transformer
is OK. An AC ammeter in the primary will be very helpful here.
If you are able to get, say, 20% Variac setting without significant current
draw, and then experience an abrupt rise in current at some point on the
Variac, then your transformer has a high voltage breakdown point.
If you get pretty high current draw (a few amps) at low Variac setting, and
with no load connected to the secondary, likely you have a shorted turn in the
transformer.
Gary W0DVN
I could do the repair on your amp but have so much work stacked here that I
can’t take on any more.
> On Mar 17, 2019, at 10:47 AM, Bernie Skoch via TenTec <tentec@contesting.com>
> wrote:
>
> Thanks, Gary. I did that. No joy.
>
>
> -----Original Message-----
> From: MadScientist <dukeshifi@comcast.net>
> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> Sent: Sun, Mar 17, 2019 10:43 am
> Subject: Re: [TenTec] Titan Repair
>
> First thing to do - remove the tube and safely suspend the plate connector so
> it can’t touch anything, then apply power to see if the fuse still opens.
>
> Gary
>
>> On Mar 17, 2019, at 9:19 AM, <w4tjegrunt@gmail.com> <w4tjegrunt@gmail.com>
>> wrote:
>>
>> Look up triad electronic supply in Winston Salem. I don’t see a web page
>> anymore, but on google, there’s still a telephone number. You want to talk
>> to Mike, N4VE.
>> He has a tech (Keith) who did repair work on my Titan 3 several times, and
>> always fixed it lickety-split.
>> I had a blown fuse issue with mine several yrs, ago. What worked for me was
>> ordering a 220 surge protector and inserting that between the 220 outlet and
>> the amp. Mine is an ICE model number 338.
>> 73 es GL de Jack W4TJE
>>
>> Sent from Mail for Windows 10
>>
>> From: Bernie Skoch via TenTec
>> Sent: Sunday, March 17, 2019 10:07 AM
>> To: tentec@contesting.com
>> Cc: Bernie Skoch
>> Subject: [TenTec] Titan Repair
>>
>> Does anyone know anyone who repairs Titan amps?
>>
>> I’ve got a Titan III that suddenly started blowing fuses.
>>
>> I tried what little diagnostics I could (checked transformer resistance,
>> separated sections, checked diode stack) with no joy. I sent it to a
>> generic amateur radio repair tech who came highly recommended on discussion
>> forums (not this one). He had it several months, said he sent the tubes and
>> transformer for testing, rebuilt part of the power supply, and finally gave
>> up.
>>
>> Any tips for a Titan repair source appreciated.
>>
>> 73,
>> Bernie
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