[TechAssist] Re: FW: Samsung TXE2546, shuts down in about 2 seconds
- From: "Barry MacInnes" <foxhole@xxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 10 Aug 2004 08:22:55 -0400
Hello Art,
I have had that problem with this model and it turned out to be the
flyback.
Barry MacInnes
Television Service Clinic
W. Lebanon,NH 03784
foxhole@xxxxxxxxx
603-298-7780
----- Original Message -----
From: "Art Bevilacqua" <abevilac@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, August 10, 2004 7:58 AM
Subject: [TechAssist] FW: Samsung TXE2546, shuts down in about 2 seconds
>
> This set begins to start up, you can hear high voltage, but then it =
> shuts
> down in just a second or two.
>
> I had a "close" schematic, and was able to prove that pretty much all of =
> the
> power supply voltages, standby, from the switching power supply and from =
> the
> secondary of the flyback are all ok. The 130V supply to the horizontal
> section is good, as are the 17 and 45 volt supplies to the vertical =
> chip.
> All voltages on the vertical and audio output chips seem good, and I =
> scoped
> the flyback area and found good clean pulses (no ringing at all).
>
> Since that day (Saturday), I found the exact schematic, but wonder =
> whether
> this problem has been encountered before,
>
> Thanks, Art Bevilacqua
> Essex Radio & TV
> 40 Main St
> Essex, MA 01929
>
>
>
>
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