[TechAssist] Re: ATX Power supply
- From: "Technotronic Dimensions" <steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 26 Jan 2004 11:43:40 -0500
Hmmm. Yea - thats Low Gain Degradation of the Transistors. It sounds like
Power Surge Territory.
Steve Hearns
Technotronic Dimensions, NY [USA]
WWW.TECHNOTRONIC-DIMENSIONS.COM
1-877-817-9885 (Voice / Fax Toll Free - US Only)
----- Original Message -----
From: "Gary McCartney" <gary@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, January 26, 2004 11:22 AM
Subject: [TechAssist] Re: ATX Power supply
Barry, I have repaired a couple of computer power suppplies which were
dead. These were under 300W output. The problems were the 2 switching
transistors in the primary side, both were 2SC3039's (against the
heatsink). They checked ok out of circuit but were actually bad. New
ones solved it.
Gary McCartney
McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca
Barry Thompson wrote:
>
> Hi All: My 350 watt supply gave up.I repaired one before but it was only
the
> standby supply, but this has no outputs.I have a schematic but no
> voltages.would someone have voltages for these supplys or the most likely
> componets to check. Thanks Barry.
> Barrys TV
> Ottawa,Canada
> barrystv@xxxxxxx
>
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