[TechAssist] Re: Zenith A25B33W CHASSIS# 9-2022
- From: "Keith Trumbla" <ktrumbla@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 20 Nov 2002 18:04:35 +0000
From my notes: ICX-3401 9 volt regulator, make sure it's putting out 9
volts. you could sub -in 9 volts to check
Keith Trumbla
O/O B.E.M Electronics Inc. Est.1954
839 Ellice ave.
Winnipeg Manitoba, Canada R3G 0C3
Ph.(204)775-2875 Fax(204) 774-9192
http://www.bemelectronics.com
>From: Rich Bateman Reply-To: techassist@xxxxxxxxxxxxx To: "Help (E-mail)"
>Subject: [TechAssist] Zenith A25B33W CHASSIS# 9-2022 Date: Wed, 20 Nov 2002
>12:51:27 -0500
>
>
>This set will not power up. no high voltage. The HOT has 125 Volts on the
>collector and while the switch is held in horz pulses can be seen on the
>base of the HOT and the high voltage attempts to come up. After checking
>the voltage sources I found that the 9v source is not putting out. I
>replaced Q3402, Q3404, Q1405, and the LM7809. All associated caps were
>checked with ESR meter. Still no power up. Could this be a shutdown
>problem???. Anybody out there have experience with this model Zenith.
>Thanks for any help you can send my way.
>
>Rich
>
>Richard J. Bateman, CET, CA. Electronics Program Area Coordinator Amherst
>Campus 716-691-0012 EXT - 232 E-MAIL rjbateman@xxxxxxxxxxxxxxxxxx
>
>
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