[TechAssist] Re: NAP 32B502 shutting down Not R11
- From: walter wood <wwood_38478@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 16 Sep 2003 21:05:50 -0700 (PDT)
Thanks BOB,
It really wasn't that easy to trace backward, but
thanks to the "List guys and gals", I had this
sucker beat pronto.
Open R503 from Lightning.
It's right by the spark gap.
Walter
--- Gemini Computer & TV
<geminitv@xxxxxxxxxxxxxxxx> wrote:
> Walter,
> You are correct. That is where the 200 volts
> comes in from the deflection.
> If you follow pin 9 of the flyback, there is
> diode D503 (200 v source diode)
> and R503 (1 ohm, 1/3 watt) and C503 (22mfd/250v)
> filter cap that goes to
> ground. From the junction of R503 and C503 it is
> a straight shot to the
> connector J503 that goes to the CRT board.
>
> Bob Waterman, CET® #RI-28
> Master Technician License #9109
> Service Manager / Parts Manager
> Gemini Computer, TV, & Security Alarms
> (508)695-7302
> (508)695-7769 FAX
> geminitv@xxxxxxxxxxxxxxxx
> geminitv@xxxxxxx
> www.geminicomputertvsecurityalarms.com
>
>
> ----- Original Message -----
> From: "walter wood" <wwood_38478@xxxxxxxxx>
> To: "Tech Assist" <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, September 16, 2003 12:54 PM
> Subject: [TechAssist] NAP 32B502 shutting down
> Not R11
>
>
> > This Crosley branded model CT3210 B101 comes on
> > with the too brite raster and shuts down.
> > R11 is ok but there is only 3.4 volts on the
> 15Kohm
> > resistors, therefore no collector voltage on
> the
> > crt drive transistors.
> > Can anyone tell me where this comes from.
> > I'm assuming I should have 200+ volts there.
> > Tia
> > 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
> >
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=====
Walter Wood
Future Tech Home Center
2786 Hwy. 43 N.
Lawrenceburg Tn. 38464
931-829-3337
Fax 931-829-4044
mailto:wwood_38478@xxxxxxxxx
__________________________________
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