[TechAssist] Re: ctc187cl3 F32672sb
- From: peggs <peggs@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx, <techassist@xxxxxxxxxxxxx>
- Date: Tue, 23 Mar 2004 09:03:25 -0800
I'll check the resistor(what's the value ???),and yes I resoldered the PCB.
thanks
Peggs
At 06:35 AM 3/23/04, Webster TV wrote:
>Peggs,
>
>R4402(#175374) in base circuit of H.O.T. can cause instant failure of H.O.T.
>even at reduced AC voltage. Replace resistor even if it checks OK. Also I
>assume you checked the solder connections on the horiz. driver transformer?
>
> Dan Webster
> Webster's TV
> Shullsburg, Wi.
>----- Original Message -----
>From: "peggs" <peggs@xxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Monday, March 22, 2004 7:02 PM
>Subject: [TechAssist] ctc187cl3 F32672sb
>
>
> > This 32" rca had a shorted HOTransistor.
> > I replaced it with a 2sd1879(winstips)
> > along with C4105 10uf/250v.
> > Flyback rings good as well as the Yoke.
> >
> > It ate the new HOTransistor.
> > I noticed B+ was about 150v at plug-in,and it popped at turn on
> > and ate the HOT.
> > With the HOT out,the B+ is at 150v in stand-by,and only drops
> > to 147v at power on.
> > I replaced the regulator STK730-150,with the same results.
> >
> > The Flyback(as well as an OEM HOT) is now on order because
> > of the 'pop',but I'm still worried about the B+.
> >
> > I resoldered the PCB also.....
> >
> > Peggs
> > Peggs' Electronics
> > 1519 West 2nd Street
> > Owensboro,KY 42301
> > 270-926-4968
> > fax 270-686-7399
> > peggs@xxxxxxxxxxxxx
> >
> >
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