[TechAssist] Re: Samsung TXJ2554 chassis# K51A

  • From: <damon101@xxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Wed, 10 Oct 2001 19:05:55 -0500

 It sure sounds like the IHVT is bad, but 190 volt cathode voltage on a 200
volt cathode supply is way too high, normally 130 - 175 is normal operating
window.


Damon Brunger
damon101@xxxxxxxxxxxxxx
Telrad Electronic Services
Ft Wayne, IN 46815
----- Original Message -----
From: "Barry Appleby" <burintv@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, October 09, 2001 9:10 PM
Subject: [TechAssist] Samsung TXJ2554 chassis# K51A


>
> This tv has sound but no raster or osd [totally black screen] . High
voltage
> and focus is ok and the heater voltage is 6.3v . The 200v on the crt is ok
> and the RK , BK and GK all have approximately 190v . The screen voltage
will
> only go to 165v . With the crt board removed it's the same . I removed the
> screen connection at crt and measured the resistance to gnd and it adjusts
> from 1.8meg to 30meg . I also replaced c518 the 103z/3kv screen cap .
Could
> this be a bad flyback ? The customer told me the picture would appear once
> and a while when it first started to act up but now it doesn't . Thanks .
>                       Barry Appleby
>                 Burin Tv Repair
>           burintv@xxxxxxxxxxx
>      Burin NFLD
>
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