[TechAssist] Re: Zenith SG5241W, 9-912 main, cannot turn off after 220V surge
- From: "Bob@Bobs tv" <woodman1@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 21 Nov 2003 16:56:38 -0500
Phil,
From microfich..
Power on voltages
Keyboard input pin8 IC6003 1.5VAC key pressed
Power on signal pin38 IC6003 on 0V/off 5V
12VSW @ Q3403 Collector
15VSW @ Q3440 Collector
9VSW @ CR4122 Anode
8VSW @ CR4122 Cathode
SW voltages should be 0V when off
Hope this helps...
Bob,
Bobs TV Worcester, ma
woodman1@xxxxxxxx
Main 508-853-1482
Fax 508-853-1480
----- Original Message -----
From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, November 21, 2003 3:11 PM
Subject: [TechAssist] Zenith SG5241W, 9-912 main, cannot turn off after 220V
surge
> The electrician shot this, of two Zeniths with 220VAC. Fuse and one
> diode bad. Now, plug it in, and instantly powers on with HV only and
> illuminated screen, slick raster.
> . Push power button and the rest comes on and works OK. The relay is not
> stuck, tho acts like it.
> Changed the 6 pin ICX6300 next to relay and checked transistors
> nearby.Same.
> No print.
> Thanks,
> Phil Bader
> --
> 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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