[TechAssist] Re: Panasonic TV/ VCR PV-M1358W-K Chassis KM-138, black box on screen

  • From: "D Thunhurst" <dthunhurst@xxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Wed, 16 Jul 2003 15:20:01 -0600

Gary,
I had a 27" Panasonic TV with that same symptom.
I thought it was in closed caption text mode but that wasn't the case.
Turned out to be the eeprom.
Daryl
Daryl's TV
3310 Dyer St.
El Paso, TX 79930
915-565-9184
915-564-1024 Fax
dthunhurst@xxxxxxx
http://dynacomp.freeyellow.com

-----Original Message-----
From: Gary McCartney <gary@xxxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
Date: Wednesday, July 16, 2003 3:02 PM
Subject: [TechAssist] Panasonic TV/ VCR PV-M1358W-K Chassis KM-138, black
box on screen


>Customer called me up and says that he was adjusting the clock in the
>menus and from then on he has a big black box on the screen (all except
>the outer edges of the screen which the picture shows through).
>Sometimes the letters [ffff] in white lettering show up in the top left
>corner of this black box. When he changes channels, the picture is ok
>for about 5 seconds then the black box returns. Problem occurs during
>VCR playback also. The regular green colored on-screen graphics are
>functioning normally.
>
>Does anyone know if this is just some kind of microprocessor glitch that
>can be reset somehow, or a menu option to escape this, or is there a
>defect in the circuitry? I told him to leave the set unplugged for a few
>hours but warned him that it probably wouldn't solve it. If it is the
>circuit, I won't be able to work on it for a week.
>
>Thanks for any help.
>--
>
>
>
>
>Gary McCartney
>
>McCartney Electronics
>7134 Fife Rd, RR 7
>Guelph Ontario Canada N1H 6J4
>Fax: (519)821-1530
>email: gary (at) number63.ca
>
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