[TechAssist] Re: Sony KV32TS36 AA-1 Q601, 602 voltages too high
- From: "Larry E" <videotech@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 28 Jan 2005 15:28:44 -0500
Phil I used the better "P" version (originals were "M"), as stated heatsink
is warm
not hot after 1 hour of running, there has to be something causing this set
of transistors
(which are notorious for failing as we all know) to run 30 volts higher than
normal,
what`s really got me is why is B+ correct???? Larry E
Larry Eastman
American TV & Electronics
Crystal River, Fl. 34428
----- Original Message -----
From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, January 28, 2005 3:10 PM
Subject: [TechAssist] Re: Sony KV32TS36 AA-1 Q601, 602 voltages too high
> Also: Did you use OEM Sony transistors?
> I find the "acid test" for those power suplies is whether Q601,602 are=20
> running comfortably warm, or does the heat sink burn your finger. (the=20
> two-second test)
> If just warm,and the set has good picture,width, regulation from light=20
> to dark scenes,etc, I wouldn't borrow trouble. Be happy! Don't worry, mon=
> !
> Phil Bader
>
> Gemini Computer & TV wrote:
>
> >Larry,
> >I hate to ask this but are you using the proper ground? Is the set worki=
> ng.
> >Those supplies are rather unforgiving if something is wrong which is wha=
> t
> >made me ask my original question!
> >
> >Bob Waterman, CET=AE #RI-28
> >Master Technician License #9109
> >Service Manager / Parts Manager
> >Gemini Computer, TV, & Security Alarms
> >(508)695-7302
> >(508)695-7769 FAX
> >geminitv@xxxxxxxxxxx
> >
> >
> >----- Original Message -----=20
> >From: "Larry E" <videotech@xxxxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Friday, January 28, 2005 2:59 PM
> >Subject: [TechAssist] Sony KV32TS36 AA-1 Q601, 602 voltages too high
> >
> >
> > =20
> >
> >>Hi Guys, this KV32TS36 came in dead R607 and Q601,602 replaced, all 3
> >> =20
> >>
> >VDR`s checked good, HOT good, powered up set with variac B+ 133.8 but
> >voltages on Q601 & 602 are too
> > =20
> >
> >>high, print says Q601 should be 164 e&b, 319 on collector, Q602 should=
>
> >> =20
> >>
> >be, E not shown,
> > =20
> >
> >>b -.2 c 164 I have the following;
> >>Q601 e&b 193.5 c 305
> >>Q602 e .002 b-.172 c193.5
> >>set has been running for an hour and heat sink of Q601&2 is pretty warm=
>
> >> =20
> >>
> >but not real hot,
> > =20
> >
> >>any ideas? I have resoldered all bad joints including hdt, regulators,
> >> =20
> >>
> >vertical IC, etc.
> > =20
> >
> >>thanks in advance, Larry E
> >>Larry Eastman
> >>American TV & Electronics
> >>Crystal River, Fl. 34428
> >>
> >>
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> >
> >
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>
> --=20
>
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: tjanphyl@xxxxxxxxxxxxxxx
>
>
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