[TechAssist] Re: Zenith A25B33W CHASSIS# 9-2022
- From: walter wood <wwood_38478@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 20 Nov 2002 10:02:14 -0800 (PST)
I wouldn't be surprized if you found the vertical
output ic defective.
It may even have a hole in it under the bracket.
Be sure and check/change the elyc.caps.
HTH
Walter
--- Rich Bateman <rbateman@xxxxxxxxxxxxxxxxxx>
wrote:
>
> 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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=====
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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