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From: jimmyjet on 29 Sep 2007 08:41
I have a rear projection tv I'm trying to get running. Originally it
wouldn't stay on. If I unplugged the convergence board it would stay
on. I bought two new stk392-040's and installed them. The right hand
side ic would get really hot really fast. So I took that one out and
installed one of the older ones and the tv works now sort of. The
picture is really bowtied shaped.
Should I order another stk392-040 and try that, or order a replacement
convergence board?
Thanks for any help.
jim

From: jimmyjet on 29 Sep 2007 17:33
On Sep 29, 11:27 am, Meat Plow <m...(a)petitmorte.net> wrote:
> On Sat, 29 Sep 2007 05:41:33 -0700, jimmyjet wrote:
> > I have a rear projection tv I'm trying to get running. Originally it
> > wouldn't stay on. If I unplugged the convergence board it would stay
> > on. I bought two new stk392-040's and installed them. The right hand
> > side ic would get really hot really fast. So I took that one out and
> > installed one of the older ones and the tv works now sort of. The
> > picture is really bowtied shaped.
> > Should I order another stk392-040 and try that, or order a replacement
> > convergence board?
> > Thanks for any help.
> > jim
>
> In any event be careful with samsung sets as some can burn the crt very
> fast when you have problems with the convergence. Also make sure you use
> the exact replacement STK and clean the heatsink surface and use proper
> thermal goop. Myself I would go over the converge board with a fine tooth
> comb and look for low value 1/10 watt resistors that may be damaged and
> replace before trying another STK.

Thank you for the reply. I bought the stk ic's from mcminone. It had
the same numbers except for the date code. Someone else mentioned I
should use panasonic stk's, but I haven't found any yet. The heatsink
had an insulator on it and no thermal goop. Do you think I should use
goop with the insulator?
I will check the resistors.
I appreciate the advice.
jim

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