[TechAssist] Re: Mitsubishi projection model TS-4573- no vertical sweep

  • From: "Leonard G. Caillouet" <lcaillo@xxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Wed, 27 Nov 2002 10:49:05 -0500

LA7838 is correct.  Look for bad traces around that IC, they are very
common.

----- Original Message -----
From: <Ttkirkpat@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, November 26, 2002 4:21 PM
Subject: [TechAssist] Mitsubishi projection model TS-4573- no vertical sweep


> Vertical ic401 has a hole in it- I believe it is an LA7838 but do not have
> service manual to verify. I put one  in and replaced the 4 vertical
filters.
> I still have no vertical sweep. Pin 1 and 8 which are power sources for
the
> LA7838 read low- pin1 is 8vdc and pin 8 which normally would be about
24vdc
> is only about 10vdc. Thanks for verification of part number and assitance
as
> to why I still have no sweep
>
>
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