[TenTec] Troubleshooting Century 21 Power Issue

[Winston]

Ken Simpson, W8EK, advertises regularly on QTH.com, and is currently parting out a Century 21, including transformer, boards and cabinet parts.
I have bought from Ken in the past and can vouch for his honesty and accurate product descriptions.
73, Winston K4CWQ

Sent from my iPhone

> On Oct 5, 2019, at 11:16 PM, Johnathon Allread <john.allread at gmail.com> wrote:
> 
> Hello everyone,
> 
> I recently purchased a digital version of a Century 21.  Unfortunately,
> when I received it, It will not power on.  When I turn it off, it very
> briefly powers on then off.  I have verified 120VAC going to the
> transformer from the switch and tried to verify 25VDC from the transformer,
> but I am not seeing a DC output across the capacitor C1.  I did this
> quickly, so I will recheck tomorrow.  My question is, if there is an issue
> with the excess current trip shut down circuit, would it have any impact on
> the unregulated output of the transformer or just affect the regulated side
> of IC1?  I am trying to understand the circuit, but my electronics
> knowledge is limited when it comes to ICs and transistors.  By the way,
> this unit is spotless inside and does not look like it has been worked on.
> Lastly, If there was an issue with the transformer, where could I purchase
> a replacement?  Thank you!
> 
> 73's
> 
> Johnathon - NE5J
> 
> Johnathon B. Allread
> john.allread at gmail.com
> 469-336-7763
> 
> "The Road to Success is Always Under Construction" - Lily Tomlin
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