[TechAssist] Re: Hitachi TV chassis NP83LX, jail bars across screen
- From: "Oscar Leiva Cessap" <oleiva@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 11 Mar 2002 14:44:28 -0400
Hi, I would like if you help me, with the following problem;
I Have to TV RCA Chassis CTC187BK, when turn on this automatically turn
of, this is periodic once turn on.
I think that Regulator U4101 is bad, what do you think, thank.
Regard
Oscar Leiva
-----Mensaje original-----
De: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] En nombre de Paul Westcott
Enviado el: Monday, March 11, 2002 2:40 PM
Para: techassist@xxxxxxxxxxxxx
Asunto: [TechAssist] Re: Hitachi TV chassis NP83LX, jail bars across
screen
Gary,
The generic flyback is definitely the problem.
Because of the jail bars, I never use a generic
on a Hitachi set bigger than 20 inch.
Try putting a .001 mfd. 400 volt ceramic cap
from the crt screen supply to ground.
Paul Westcott
Kingsway Electronics
Sudbury, Ontario
Canada.
Phone 705 566-9290
Fax 705 566-5349
westcott@xxxxxxx
kingswayelectronics@xxxxxxxxxx
Fax 705 566-5349
paul.westcott@xxxxxxxxxxxx
-----Original Message-----
From: Gary McCartney <number63@xxxxxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
Date: Monday, March 11, 2002 12:01 PM
Subject: [TechAssist] Hitachi TV chassis NP83LX, jail bars across screen
>
>This is a 27" Hitachi , model TE-4440X, chassis NP83LX.
>
>I replaced the flyback with an Asti Magnetics replacement, # 2433843.
>Now set works fine other than there are jail bars across the screen.
The
>bars are not solid black, but rather a dull kind of shadow, and
gradully
>fade out toward the right side of the screen. The bars are about 3/4
>inch wide and 2 inch between them.
>
>I have changed caps around the flyback: C707, C717, C720, and C724.
Also
>changed a few caps in the SMPS which were high ESR. Problem still
>exists. Is it possible this generic flyback is causing the symptoms?
>
>Thanks for any help.
>--
>
>
>
>Gary McCartney
>
>McCartney Electronics
>7134 Fife Rd, RR 7
>Guelph Ontario Canada N1H 6J4
>Fax: (519)821-1530
>email: number63@xxxxxxxxxxxxx
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