[TA-A] Re: Hitachi 46W500 TV
- From: "Mike Schoettinger" <kc8lqu@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 01 Aug 2007 14:53:20 +0000
I haven't found any bad caps or cracked solder joints. I have no way to
ringthe flyback and I hate to shotgun it because the flyback is $55. I
ordered the service manual on it so I am hoping that helps. Any help is
appreciated. I am desperate the customer is breathing down my kneck to get
there tv back. Thanks.
Mike
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From: robert manrique <ustvv@xxxxxxxxx>
Reply-To: techassist@xxxxxxxxxxxxx
To: techassist@xxxxxxxxxxxxx
Subject: [TA-A] Re: Hitachi 46W500 TV
Date: Tue, 31 Jul 2007 07:26:19 -0700 (PDT)
>Hello Mike
>
> in Hitachi projos I've found that the yoke plug is too loose and
flickersin the connection and blows the output transistor ( Also known to
blow the vertical chip). It happens in both the one combination sweep and
high voltage transistor and the one that uses a split horizontal system
>
>
> Hope I've been of help and at your service
>
> Robert Manrique
>
> 321 443 4664
>
> Ps a rare case i had the jungle chip oscillator crystal was loose in the
board and i suapected it was lazy also so i changed it and it never returned
>
>
>Mike Schoettinger <kc8lqu@xxxxxxxxxxx> wrote:
> HI, I have a 46" Hitachi big screen that I am working on. The model
>number is 46W500. The problem I am having is that it will keep blowing the
>horizontal output transistor 2SC5909 after about one day of use. Usually on
>some other sets I have worked on that has been caused by a bad flyback.
>But, I have no way to ring the flyback to check it. Any ideas? Does
>anyonehave a schematic for this set? Thanks in advance. Mike Schoettinger
>5 Star Electronics (937) 475-2240
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