Help with Astec VS3-C3-C8-00 Power Supply

Thread Starter

sllsll

Joined Nov 21, 2009
2
Hi,
I bought a brand new (old stock) Astec VS3-C3-C8-00 power supply.
I plugged it in.
Fan comes on.
All 3 LEDs in front are red for a second.
Then looks like the AC LED turns green. Two other LEDs remain red.
(See attached photo)
I don't have any DC power output.

I don't know what to do.
Please help.
Thank you very much.
 

Attachments

Thread Starter

sllsll

Joined Nov 21, 2009
2
Thank you SgtWookie for the website.
No wonder why I could not find Astec website.

The power supply came with the manual.
I looked at it and try to understand as much as I could :D

Actually I have another smaller Astec Power Supply (MP8) model.
I added an AC power cord; plug it into the wall.
All lights lid green and all DC outputs have power.

I thought this new power should do the same.
Plug it in fan comes on like I said, but not DC output.
According to the manual Red LED means: output not operating within tolerance. Well, I should I do?

I'll try to call the support number tomorrow.
 

SgtWookie

Joined Jul 17, 2007
22,230
OK, your next step would be to get a schematic and parts listing.

Preferably, a service manual.

With no knowledge of how old or what it is, it could be a linear supply or a switching supply.

Electrolytic capacitors would be the first thing I would suspect; they don't age very gracefully. After sitting on a shelf for prolonged periods, the dielectric "goes away".

Sometimes, electrolytic capacitors that have not ruptured or leaked their "juice" can have their dielectric layer re-formed, by slowly charging them to their rated voltage via a high-impedance current source. But if power has already been applied, it's likely that the caps are beyond re-forming.
 
Top