[time-nuts] FTS-4040/A - Looking for voltage on switching power supply

[Taka Kamiya]

Now it is certain the failure is power supply.  I fed 26V into DC port and everything is working as before.  I'd rather replace this faulty supply.  Question is, 24V?  28V?  30V?  or 28.45V?  This power supply appears to be a custom unit.  Still looking for spec on power supply.
At least it's not the cesium tube.... phew!

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(Mr.) Taka Kamiya
I'm stuck in a wormhole....  Hello, worms! 

    On Sunday, March 17, 2019, 3:59:57 PM EDT, paul swed <paulswedb at gmail.com> wrote:  
 
 TakaNo familiarity with 4040 and I don't have schematics.But thats not unusual for a lot of time-nuts equipment.But happy to give a remote hand. (Travelling this coming week so slow responses)Others may have more useful details like a schematic.RegardsPaulWB8TSL

On Sun, Mar 17, 2019 at 3:02 PM Taka Kamiya via time-nuts <time-nuts at lists.febo.com> wrote:

I have an FTS-4040/A Cesium Oscillator from Datum.  It was working last night and dead today.  A/C available LED is lit but nothing else.  Checking power supply, I read 8.9V.  (large switching supply on back panel)  Rather odd voltage I thought.  Checked some ICs on a board.  It's not getting power.  

Does anyone have this unit or know what this switching supply is supposed to output?  It is a single voltage supply.

--------------------------------------- 
(Mr.) Taka Kamiya
I'm stuck in a wormhole....  Hello, worms!
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