[TechAssist] Re: Sony KV-27HSR10 (1990) H.O.T Overheating....
- From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 4 Sep 2001 12:34:45 -0400
Sorry , off for a couple of days. No the width looks good...
thanks
Bruce.
----- Original Message -----
From: "Quality Video Service" <BTSteve@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, September 01, 2001 11:30 AM
Subject: [TechAssist] Re: Sony KV-27HSR10 (1990) H.O.T Overheating....
>
> Does the picture have excessive width?
> If so, you might look at the caps on the collector of the H.O.T.
> Just a thought.....
>
> Bruce Tiedeman wrote:
>
> > I can not find the previous post on this problem. I put in the original
> > Output transistor , I soldered the driver transformer and connections in
the
> > Horiz. section. I did change the .47\50 cap at the driver transformer.
> >
> > Is there some thing else that has to be changed on this chassis. The
> > transistor gets very hot. The waveform looks very clean at the base of
the
> > H.O.T . it starts to get hot after a few minutes.
> >
> > The original problem was a blown HOT transistor and the special damper
diode
> > . The R523 (.68 ohm resistor ) was over heated but not blown. I replaced
> > this also.
> >
> > If I remember correctly these do run hot, just didn't wanted to send
this
> > out and have it come back...
> >
> > thanks for your input,
> >
> > Bruce
> > B&T Electronics.
> >
> > Help make your TechAssist online repair tips
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>
> --
> Steve Rumel
> Quality Video Service 7008 Long Point Houston, Tx. 77055
> 713-956-2400 713-956-2403 FAX BTSteve@xxxxxxx
> Other life :-)
> Col Steve Rumel, CAF
> Crew Chief, BT-13A
> Safety Officer, 2001
> West Houston Squadron
>
>
> Help make your TechAssist online repair tips
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