[TechAssist] Re: Hitachi 27CX4B A3LXU1 shutdown intmt
- From: "Keith Trumbla" <keith@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 24 Nov 2003 10:11:47 -0600
Here are two files for you Peter. The M3LXU might not be the same as your
A3LXU. The mod that came to mind is the adding of a .47uf across R302.
HTH
Keith Trumbla
BEM Electronics Inc.
Suite 212-530 Century St.
WPG. MB. R3H 0Y4 Canada
Ph.204.775.2875 Fax.204.774.9192
www.bemelectronics.com
----- Original Message -----
From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, November 22, 2003 6:20 PM
Subject: [TechAssist] Hitachi 27CX4B A3LXU1 shutdown intmt
> Hitachi
> 27CX4B
> Chassis A3LXU1
> Chassis MFD Sept 1994
> Set MFD Jan 1995
>
> Intmt Shutdown at turn on-HV comes up then shuts down
all
> in about 1 sec or less there is a pronounced Hum in the power supply when
> shutdown. Have changed regulator no effect. Can get to start with hair
dryer
> but will not reverse back to failure with freeze mist. D744 tested after
set
> started working tests as intact. Ideas? was thinking a connection or cap
> problem but once starts working no good method to get to stop working one
of
> the types you think you've got it and put it together try quite a bit
later
> and then doesn't come on....
>
> Peter Oliver
> Tucson Radio TV
>
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