[TechAssist] Re: Sony KV32TS36 AA-1 Q601, 602 voltages too high
- From: "Larry E" <videotech@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 28 Jan 2005 18:32:57 -0500
Al, the B+ on the secondary is right on and the transistors are not running
hot so I`m
going to run it tomorrow for half a day, if it passes that test I`m going to
ship it, I
don`t know if the print is correct or not, I`ve worked on a few of these
supplies
but always worried about the heat so I don`t think I`ve ever actually
measured the
voltages before, I guess I`ll find out tomorrow, Larry E
Larry Eastman
American TV & Electronics
Crystal River, Fl. 34428
----- Original Message -----
From: "al m" <ampm@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, January 28, 2005 6:06 PM
Subject: [TechAssist] Re: Sony KV32TS36 AA-1 Q601, 602 voltages too high
> Are you sure the print is right?
> Al Marquardt
> ampm@xxxxxxx
> Al Marquardt Electronic Repair
> 206 W Main
> Girardville Pa. 17935
> ----- Original Message -----
> From: "Larry E" <videotech@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, January 28, 2005 3:28 PM
> Subject: [TechAssist] Re: Sony KV32TS36 AA-1 Q601, 602 voltages too high
>
>
> > 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
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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
> >>
> >>
> >>
> >>
> >> --
> >> No virus found in this outgoing message.
> >> Checked by AVG Anti-Virus.
> >> Version: 7.0.300 / Virus Database: 265.7.3 - Release Date: 1/24/2005
> >>
> >>
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