[TechAssist] Re: Pioneer SD-P5183-K In power down
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 8 Feb 2003 16:46:00 -0500
Walter I worked on my sisters pioneer big screen and there were parts not
listed in the parts list,but on the schematic they were marked in non
repairable area. according to pioneer it was a matched circuit and I had to
replace the board. This was a older PTV SD-P4****. Just a thought.
al marquardt
ampm@xxxxxxx
----- Original Message -----
From: "walter wood" <wwood_38478@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, February 08, 2003 4:17 PM
Subject: [TechAssist] Re: Pioneer SD-P5183-K In power down
>
> There is NO detectable high voltage.
> The Question is, what is the part number for Q309
> and/or how do I get a 2SD2300.
> The website at Tritronics doesn't list it, and the
> part no. is not in the pioneer manual.
> Walter
> --- John at Main TV <maintv2002@xxxxxxxxxxxx>
> wrote:
> >
> > Yes, It is strange that the base resistance can
> > be measured at the
> > leads, it appears the first transistor should
> > block the measurement.
> > But if the first transistor is shorted it is
> > unlikely that it would
> > work at all. An NTE2331 is not a good
> > replacement and no other cross is
> > listed. If the high voltage comes on and then
> > shuts down I would
> > suspect Q308 (2SD1267A or NTE261) is shorted,
> > that problem is quite
> > common. John.
> >
> > wwood_38478@xxxxxxxxx wrote:
> >
> > >I believe that this is a darlington.
> > >The transistor Q308, that is in the circuit with
> > >it(and drawn on the pioneer schematic the same
> > way
> > >as Q309) is findable on NTE and subs to a
> > NTE261, a
> > >NPN darlington power transistor.
> > >It does NOT read shorted between emitter and
> > base.
> > >In fact, it's over 70Kohms in circuit.
> > >What has me really puzzled is the fact that the
> > >schematic shows both of these to be two junction
> > >devices with damper and resistor.
> > >The resistor is blocked from the base by the
> > second
> > >junction.
> > >If the 2SD2300 IS a darlington, then the info
> > from
> > >the google search isn't correct. A NTE 2331 is a
> > >horizontal output, but not a darlington.
> > >Walter
> > >--- Dave <audioserviceclinic@xxxxxxxxx> wrote:
> > >
> > >
> > >>If we're talking about a HO, yes that would be
> > >>the damper diode, and about
> > >>40ohms sounds about right. It shows a diode
> > >>junction between
> > >>emitter/collector and base/collector and 40ohms
> > >>between base/emitter? If so,
> > >>yes that's normal.
> > >>
> > >>Dave
> > >>----- Original Message -----
> > >>From: "walter wood" <wwood_38478@xxxxxxxxx>
> > >>To: <techassist@xxxxxxxxxxxxx>
> > >>Sent: Saturday, February 08, 2003 12:05
> > >>Subject: [TechAssist] Re: Pioneer SD-P5183-K In
> > >>power down
> > >>
> > >>
> > >>
> > >>
> > >>>I don't know, It's being used like a
> > horizontal
> > >>>output, although pioneer calls it "High
> > Voltage
> > >>>Det."
> > >>>Walter
> > >>>--- Dave <audioserviceclinic@xxxxxxxxx> wrote:
> > >>>
> > >>>
> > >>>>This is kind of out of context, but I think
> > >>>>
> > >>>>
> > >>you
> > >>
> > >>
> > >>>>are describing a digital
> > >>>>transistor, correct?
> > >>>>
> > >>>>Dave
> > >>>>----- Original Message -----
> > >>>>From: "walter wood" <wwood_38478@xxxxxxxxx>
> > >>>>To: "Tech Assist" <techassist@xxxxxxxxxxxxx>
> > >>>>Sent: Saturday, February 08, 2003 11:55
> > >>>>Subject: [TechAssist] Pioneer SD-P5183-K In
> > >>>>
> > >>>>
> > >>power
> > >>
> > >>
> > >>>>down
> > >>>>
> > >>>>
> > >>>>
> > >>>>
> > >>>>>This set goes into shutdown immediately.
> > >>>>>Dead, with the led on the front panel red,
> > >>>>>
> > >>>>>
> > >>and
> > >>
> > >>
> > >>>>>steady burning.
> > >>>>>Relay clicks, but must unplug to get the
> > >>>>>
> > >>>>>
> > >>set to
> > >>
> > >>
> > >>>>>attempt startup again.
> > >>>>>I found Q309, a 2SD2300 type, reads 40 ohms
> > >>>>>
> > >>>>>
> > >>>>across
> > >>>>
> > >>>>
> > >>>>>the base and emitter out of
> > >>>>>
> > >>>>>
> > >>circuit.According
> > >>
> > >>
> > >>>>to
> > >>>>
> > >>>>
> > >>>>>the schematic this shouldn't be. Of course
> > >>>>>
> > >>>>>
> > >>it
> > >>
> > >>
> > >>>>reads
> > >>>>
> > >>>>
> > >>>>>shorted in circuit, reads through a coil.
> > >>>>>Q308 is drawn the same way, and does not
> > >>>>>
> > >>>>>
> > >>read
> > >>
> > >>
> > >>>>that
> > >>>>
> > >>>>
> > >>>>>way. The pioneer schematic indicates a
> > >>>>>
> > >>>>>
> > >>diode
> > >>
> > >>
> > >>>>and a
> > >>>>
> > >>>>
> > >>>>>resistor, and two transistor junctions in
> > >>>>>
> > >>>>>
> > >>this
> > >>
> > >>
> > >>>>>package.
> > >>>>>The NTE on line cross reference does not
> > >>>>>
> > >>>>>
> > >>find
> > >>
> > >>
> > >>>>this
> > >>>>
> > >>>>
> > >>>>>transistor, and neither does Tritronics.
> > >>>>>A google search finds some discussion that
> > >>>>>
> > >>>>>
> > >>it
> > >>
> > >>
> > >>>>can
> > >>>>
> > >>>>
> > >>>>>be replaced by a NTE2331.
> > >>>>>This had to do with a RCA set.
> > >>>>>Pioneer does not give a part number.
> > >>>>>Can anyone give me any guidance
> > >>>>>
> > >>>>>
> > >>troubleshooting
> > >>
> > >>
> > >>>>>this set, and finding out about this
> > >>>>>
> > >>>>>
> > >>>>transistor??
> > >>>>
> > >>>>
> > >>>>>Thanks
> > >>>>>Walter
> > >>>>>
> > >>>>>=====
> > >>>>>Walter Wood
> > >>>>>Future Tech Home Center
> > >>>>>2786 Hwy. 43 N.
> > >>>>>Lawrenceburg Tn. 38464
> > >>>>>931-829-3337
> > >>>>>Fax 931-829-4044
> > >>>>>mailto:wwood_38478@xxxxxxxxx
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>>>
> >
> >__________________________________________________
> > >
> > >
> > >>>>>Do you Yahoo!?
> > >>>>>Yahoo! Mail Plus - Powerful. Affordable.
> > >>>>>
> > >>>>>
> > >>Sign
> > >>
> > >>
> > >>>>up now.
> > >>>>
> > >>>>
> > >>>>>http://mailplus.yahoo.com
> > >>>>>
> > >>>>>
> > >>>>>
> >
>
>***************************************************************************
*
> > >
> > >
> > >>>>*
> > >>>>
> > >>>>
> > >>>>>Submit A Repair Tip Here, or Change/Remove
> > >>>>>
> > >>>>>
> > >>your
> > >>
> > >>
> > >>>>Email Address:
> > >>>>
> > >>>>
> > >>http://www.tech-assist.org/secure/tip/main.html
> > >>
> > >>
> >
>
>***************************************************************************
*
> > >
> > >
> > >>>>*
> > >>>>
> > >>>>
> > >>>>>For automatic password retrieval 24 hours a
> > >>>>>
> > >>>>>
> > >>>>day, go to:
> > >>>>
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> > >>>>>http://www.tech-assist.org and select
> > >>>>>
> > >>>>>
> > >>"Lost
> > >>
> > >>
> > >>>>your Login Info?".
> > >>>>
> > >>>>
> >
>
>***************************************************************************
*
> > >
> > >
> > >>>>*
> > >>>>
> > >>>>
> > >>>>
> > >>>>
> >
>
>***************************************************************************
*
> > >
> > >
> > >>*
> > >>
> > >>
> > >>>>Submit A Repair Tip Here, or Change/Remove
> > >>>>
> > >>>>
> > >>your
> > >>
> > >>
> > >>>>Email Address:
> > >>>>
> > >>>>
> > >>>>
> > >>>>
> > >>http://www.tech-assist.org/secure/tip/main.html
> > >>
> > >>
> >
>
>***************************************************************************
*
> > >
> > >
> > >>*
> > >>
> > >>
> > >>>>For automatic password retrieval 24 hours a
> > >>>>
> > >>>>
> > >>day,
> > >>
> > >>
> > >>>>go to:
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> > >>>>
> > >>your
> > >>
> > >>
> > >>>>Login Info?".
> > >>>>
> > >>>>
> > >>>>
> >
>
>***************************************************************************
*
> > >
> > >
> > >>*
> > >>
> > >>
> > >>>=====
> > >>>Walter Wood
> > >>>Future Tech Home Center
> > >>>2786 Hwy. 43 N.
> > >>>Lawrenceburg Tn. 38464
> > >>>931-829-3337
> > >>>Fax 931-829-4044
> > >>>mailto:wwood_38478@xxxxxxxxx
> > >>>
> > >>>
> > >>>
> > >>>
> >
> >__________________________________________________
> > >
> > >
> > >>>Do you Yahoo!?
> > >>>Yahoo! Mail Plus - Powerful. Affordable. Sign
> > >>>
> > >>>
> > >>up now.
> > >>
> > >>
> > >>>http://mailplus.yahoo.com
> > >>>
> > >>>
> > >>>
> >
>
>***************************************************************************
*
> > >
> > >
> > >>*
> > >>
> > >>
> > >>>Submit A Repair Tip Here, or Change/Remove
> > your
> > >>>
> > >>>
> > >>Email Address:
> > >>
> > >>
> > >>>
> > >>>
> > >>>
> > >>http://www.tech-assist.org/secure/tip/main.html
> > >>
> > >>
> >
>
>***************************************************************************
*
> > >
> > >
> > >>*
> > >>
> > >>
> > >>>For automatic password retrieval 24 hours a
> > >>>
> > >>>
> > >>day, go to:
> > >>
> > >>
> > >>>http://www.tech-assist.org and select "Lost
> > >>>
> > >>>
> > >>your Login Info?".
> > >>
> > >>
> >
>
>***************************************************************************
*
> > >
> > >
> > >>*
> > >>
> > >>
> > >>
> > >>
> >
>
>***************************************************************************
**
> > >
> > >
> > >>Submit A Repair Tip Here, or Change/Remove your
> > >>Email Address:
> > >>
> > >>http://www.tech-assist.org/secure/tip/main.html
> > >>
> > >>
> > >>
> >
>
>***************************************************************************
**
> > >
> > >
> > >>For automatic password retrieval 24 hours a
> > day,
> > >>go to:
> > >>http://www.tech-assist.org and select "Lost
> > your
> > >>Login Info?".
> > >>
> > >>
> > >>
> >
>
>***************************************************************************
**
> > >
> > >
> > >=====
> > >Walter Wood
> > >Future Tech Home Center
> > >2786 Hwy. 43 N.
> > >Lawrenceburg Tn. 38464
> > >931-829-3337
> > >Fax 931-829-4044
> > >mailto:wwood_38478@xxxxxxxxx
> > >
> >
> >__________________________________________________
> > >Do you Yahoo!?
> > >Yahoo! Mail Plus - Powerful. Affordable. Sign up
> > now.
> > >http://mailplus.yahoo.com
> >
>
>***************************************************************************
**
> > >Submit A Repair Tip Here, or Change/Remove your
> > Email Address:
> > >
> > http://www.tech-assist.org/secure/tip/main.html
> >
>
>***************************************************************************
**
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> > go to:
> > >http://www.tech-assist.org and select "Lost
> > your Login Info?".
> >
>
>***************************************************************************
**
> > >
> > >
> >
> > --
> > John Mielke
> > Main TV
> > Longmont,Co 80501
> > 303 776 6955
> > 303 776 0792 fax
> > maintv2002@xxxxxxxxxxxx
> >
> >
> >
> >
>
****************************************************************************
*
> > Submit A Repair Tip Here, or Change/Remove your
> > Email Address:
> >
> > http://www.tech-assist.org/secure/tip/main.html
> >
>
****************************************************************************
*
> > For automatic password retrieval 24 hours a day,
> > go to:
> > http://www.tech-assist.org and select "Lost your
> > Login Info?".
> >
>
****************************************************************************
*
>
>
> =====
> Walter Wood
> Future Tech Home Center
> 2786 Hwy. 43 N.
> Lawrenceburg Tn. 38464
> 931-829-3337
> Fax 931-829-4044
> mailto:wwood_38478@xxxxxxxxx
>
> __________________________________________________
> Do you Yahoo!?
> Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
> http://mailplus.yahoo.com
>
****************************************************************************
*
> Submit A Repair Tip Here, or Change/Remove your Email Address:
> http://www.tech-assist.org/secure/tip/main.html
>
****************************************************************************
*
> For automatic password retrieval 24 hours a day, go to:
> http://www.tech-assist.org and select "Lost your Login Info?".
>
****************************************************************************
*
>
>
*****************************************************************************
Submit A Repair Tip Here, or Change/Remove your Email Address:
http://www.tech-assist.org/secure/tip/main.html
*****************************************************************************
For automatic password retrieval 24 hours a day, go to:
http://www.tech-assist.org and select "Lost your Login Info?".
*****************************************************************************
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