[TechAssist] Re: Samsung Model TXK2754 chassis KS2A
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 16 Mar 2004 19:56:39 -0500
Alvin I've seen this before can't remember where but it was the pump up
diode breaking down.
Al Marquardt
ampm@xxxxxxx
Al Marquardt Electronic Repair
206 W Main
Girardville Pa. 17935
----- Original Message -----
From: "Alvin Rose" <ajroseca@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, March 16, 2004 10:22 PM
Subject: [TechAssist] Re: Samsung Model TXK2754 chassis KS2A
> Hi Ken
> Yes I tried cold spray but it did not correct the white line
> when it occurs..Do you think it might be the IC..I have the
> latest NTE cross and It was not listed..The IC is a LA7845
> In this unit.
> Alvin
> gulftech@xxxxxxxx wrote:
>
> >Alvin,
> >
> >My NTE guide lists that as an NTE7167.
> >
> >Have you tried cold spray?
> >
> >HTH,
> >
> >
> >Ken Smith
> >Gulf Technical Services
> >3034 Gulf Breeze Parkway
> >Gulf Breeze, FL 32563
> >850-934-8324 (Voice) 850-932-0819 (Fax)
> >
> >
> >On Tue, 16 Mar 2004 16:25:37 -0800 Alvin Rose <ajroseca@xxxxxxxxxxxxxxx>
> >writes:
> >
> >
> >>Hi Guys
> >>We have a Samsung KS2A chassis which runs ok for
> >>an hour or so...then it goes into a white line..a complete
> >>loss of vertical sweep..checked the electrolytics in the output
> >>checks ok..This set uses a la7845 ic which is not listed in NTE
> >>for cross reference...looks like an electrolytic or the ic is
> >>shorting..
> >>Any sub for this IC?
> >>.If it is turned off for ten minutes it will come on ok for 30
> >>minutes
> >>or more.
> >>checked circuit board for bad soldering...but ok...
> >>anyone have this problem..any help would be appreciated
> >>Alvin Rose
> >>Radio & Tv Centre
> >>Marystown, Nl
> >>
> >>
> >>
> >>
> >>
> >>
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