[TechAssist] Re: (TechAssist) (Sony) Transistor D2578 - need sub

  • From: Jorge Camboni <geo@xxxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Sun, 05 Sep 2004 22:40:06 -0500

He OBVIOUSLY means the overheating process by which the HOT goes into
thermal runaway.

At 07:14 p.m. 05/09/2004 -0700, you wrote:
>What is thermal runaway in the H/O section?
>
>Kevin Wilks
>Kevin's TV & Video Repair
>Penticton BC Canada
>kevintv@xxxxxxx
>
>
>-----Original Message-----
>From: techassist-bounce@xxxxxxxxxxxxx
>[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of S. Pasher
>Sent: Sunday, September 05, 2004 6:48 PM
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: (TechAssist) (Sony) Transistor D2578 - need
>sub
>
>I use 2SD2539 as a replacement for a lot of H/O's. In the Daewoo it is
>recommended that the 2SD1880 be replaced with it. I runs a lot cooler
>then
>1880 and the Daewoo's problem is there is thermal runaway in H/O
>section.
>
>Buck Pasher
>Buck's TV
>Gander Newfoundland
>Canada
>709-256-7738 (Fax & Phone)
>
>
>
>----- Original Message -----
>From: "Jorge Camboni" <geo@xxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Sunday, September 05, 2004 6:47 PM
>Subject: [TechAssist] Re: (TechAssist) (Sony) Transistor D2578 - need
>sub
>
>
> > Best sub is 2SD2580- pretty good ones are 2SD2539 and 2SD2553 (proven
> > many times, usually run almost cold).
> > The 2SD1880/81 may work, you have to try them and monitor the
>temperature,
> > they're lower gain transistors than 2578/80 series which are much
>newer.
> > All of them have an integrated damper diode.
> > There are more subs, of course, those are the most popular (and
> > unexpensive) ones.
> > Jorge
> >
> > At 07:44 p.m. 04/09/2004 -0500, you wrote:
> > >I need a sub for transistor D2578 out of a Sony TV.      Thanks.
> > >
> > >Kenny Barnes
> > >Kenny Barnes tv
> > >928 South Marshall st.
> > >5154325250
> > >Boone, Iowa 50036
> > >
> > >
> >
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> >
> >
> > Jorge Camboni, GY Electronics, Richardson, TX
> >
> >
> >
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Jorge Camboni, GY Electronics, Richardson, TX 


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