[TechAssist] Re: Hitachi CT7881B G9LXU faint dots and intermittent streaks
- From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sun, 22 Sep 2002 17:38:10 +0000
This ended up with extensive run time to cause failure as bad connections in
the tuner one next to the IC was completly broken free (near lower left
corner of surface mount IC). A few other connection required touchup too.
Peter Oliver
Tucson Radio TV
From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
Reply-To: techassist@xxxxxxxxxxxxx
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Hitachi CT7881B G9LXU faint dots and intermittent
streaks
Date: Sat, 14 Sep 2002 22:03:23 +0000
Hitachi CT7881B
Chassis G9LXU (MFD 1990)
Set has poor picture ie faint dots in the background and Intemitant white
streaks flash into the picture randomly but otherwise ok all tunning bands
work.
My first inclanation is that the Tuner is starting to fail possibly starting
to loose a stage or that the input switch block is damaged, A simple thump
test does not indicate connection problems and a visual check of the chassis
does not indicate obvious connections.
Anyone seen this or is the tuner the next step or is there an external IF or
AFT drive on chassis that might be indicated.
Peter Oliver
Tucson Radio TV
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