[TechAssist] Re: Zenith Z-line, GAchassis, 9-1790 module
- From: "Bob@Bobs tv" <woodman1@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 21 Oct 2003 10:11:25 -0400
Buck,
For starters replace CX3413 22/25 CX3416 100/25 in power supply..When
you push power button, does HV try to come up? HV trying to come up could
mean vertical failure. No HV, check horiz drive at base of output
transistor... bad transformer???? Most problems I have found on the GA
chassis {all screen sizes} have been power supply, caps off collector HOT,
vertical circuit and one open foil under the paint, RX3242 {+23} supply to
vertical CX2105..Micro's/eproms yes, but normally during electrical
storms...
Hope this helps
Bob,
Bobs TV Worcester, ma
woodman1@xxxxxxxx
Main 508-853-1482
Fax 508-853-1480
----- Original Message -----
From: "S. Pasher" <spasher@xxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, October 20, 2003 9:37 PM
Subject: [TechAssist] Zenith Z-line, GAchassis, 9-1790 module
> Had this one come in today,no power.Replaced the STR53041 and found RX3404
> open, these got my SMPS up and running. I 've got 123 and 15volts out of
it
> .The problem now is the other supplies that are developed by the 15v (VSB)
> into 15v (VSW) and (AUDIO) are not there. I have ,when ON/OFF pressed, 5v
on
> base Q3402 but it is only there for a second,this is the startup voltage.
It
> turns on Q3403 and 4.when working properly. Do I have a bad IC6000 or is
> there something else wrong .
> Does anyone have any ideas on this problem.
>
>
> Buck Pasher
> Buck's TV
> Gander Newfoundland
> Canada
> 709-256-7738 (Fax & Phone)
>
>
>
>
>
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