[TechAssist] Re: Sony kv27ts32 SMPS kit installed,replaced 2SC4927 v.hot
- From: <hartstv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 5 Sep 2003 18:25:01 -0300
I have found that the 2SC1427,with the letters''NSC'' on them run much
cooler than any other 1427 type.Not sure why or where I got this
info.......................
Don of HARTS-TVCR-ASC
9 Robert St,Oromocto,NB,Canada,E2V3N2
Tel-506-357-9785,Fax-506-357-6010
hartstv@xxxxxxxxxxx
----- Original Message -----
From: "Leonard Caillouet" <lcaillo@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, September 05, 2003 9:20 AM
Subject: [TechAssist] Re: Sony kv27ts32 SMPS kit installed,replaced 2SC4927
v.hot
> I use the 2SD1881 to replace the 2sc4927. They run cooler, are more
stable
> and more reliable. I have had more recalls with $10 Sony replacements
than
> with $2.00 generics. No heat sink is needed IMO if there are not other
> problems with the circuit.
>
> I can provide my customers with a better value and make more profit by
using
> a replacement in this case, so that's what we do. I recommend caution
when
> deciding to use subs, however, and recommend comparing in circuit
> performance carefully to the original.
>
> Leonard Caillouet
> Electronics World
> Gainesville, FL
>
>
>
>
> ----- Original Message -----
> From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, September 05, 2003 8:12 AM
> Subject: [TechAssist] Re: Sony kv27ts32 SMPS kit installed,replaced
2SC4927
> v.hot
>
>
> > Interesting...
> > So:
> > How does the group feel about using an alternate transistor sub
> > mentioned for Sonys?
> > anyone else do this?
> > Feedback!
> > Phil Bader
> >
> > Jorge Camboni wrote:
> > >
> > > 2SC4927 is not the best choice, it ALWAYS runs hot on those sets
> > > Too many better subs to list.
> > > Even old slow D1556 works better, if you want a premium sub transistor
> > > try 2SD2578/80 . Usual replacement: 2SD1880/81
> > > I usually add a piece of aluminium stock to the heatsink.
> > > Have had 0 returns so far.
> > > Jorge
> > >
> > > At 04:54 p.m. 04/09/03 -0400, you wrote:
> > > >Had a shorted HOT 2SC4927 and the SMPS transistors
> > > >Q601,602,resistors,etc.
> > > >Installed an SMPS kit (OEM-Q601,602, 3 VDRs, 2 resistors). and an OEM
> > > >2SC4927 HOT. Powers up,plays good, but I think the new HOT runs hot.
> > > >What other parts are usually responsible for this?
> > > >Phil Bader
> > > >--
> > > >Philip Bader
> > > >Jan Phyl TV Inc. (estab. 1976)
> > > >3420 Recker Hwy. Winter Haven, Fl. 33880
> > > >Fax (863) 299-8821
> > > >email: tjanphyl@xxxxxxxxxxxxxxx
> > > >For Professional Technicians Only
> > > >
> > >
>
>***************************************************************************
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> > > Jorge Camboni, GY Electronics, Richardson, TX
> > >
> > >
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> > --
> > Philip Bader
> > Jan Phyl TV Inc. (estab. 1976)
> > 3420 Recker Hwy. Winter Haven, Fl. 33880
> > Fax (863) 299-8821
> > email: tjanphyl@xxxxxxxxxxxxxxx
> > For Professional Technicians Only
> >
> >
>
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