[TechAssist] Re: NAP 32B502 shutting down Not R11
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 16 Sep 2003 17:14:24 -0400
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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