[TechAssist] Re: Toshiba CF27E30..almost fixed..bright red screen..
- From: "Bob@Bobs tv" <woodman1@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 23 Sep 2003 16:48:03 -0400
Jeff,
That sounds like the tv from hell.. Try turning on with screen
control turned down. Measure screen when screen is brite and when normal,
you could have a bad focus/screen control on fly.. Had same problem with a
Zenith..
Bob,
Bobs TV Worcester, ma
woodman1@xxxxxxxx
Main 508-853-1482
Fax 508-853-1480
----- Original Message -----
From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
To: "Techassist" <techassist@xxxxxxxxxxxxx>
Sent: Monday, September 22, 2003 10:54 PM
Subject: [TechAssist] Toshiba CF27E30..almost fixed..bright red screen..
>
> Along with the info below...after replacing those parts(T802 was OK), I
found no video/no audio through
> tuner and no audio through AV jacks. Found voltages on tuner twice what
they should be. Received tuner
> from Tip Top and now audio/video is back.
>
> Now, the screen gets real bright at first turn on, bright red..then dims
to normal and picture looks
> great.
> Also, when turned on after set has cooled over night, there is a real loud
burst coming from the
> speakers..lasts a few seconds. This problem has been there since I
restored power, but thought it may fix
> itself once I took care of the other problems...I'm almost there....please
help.
> This is not the first Toshiba unit I have heard of power supply failure
along with the tuner, fyi.
>
> Jeff Dougherty
> Intrepid Video TV/VCR
> 263 S Front St
> Steelton PA 17113
> fax...717-564-4952
> www.intrepid-video.com www.tech-repair.net
>
> ----- Original Message -----
> From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
> To: "Techassist" <techassist@xxxxxxxxxxxxx>
> Sent: Friday, May 16, 2003 9:41 PM
> Subject: [TechAssist] Toshiba CF27E30..dead...
>
>
> Following parts were originally found bad:
> All the following parts were bad, replaced with Toshiba:
> Q801(STRS52041)
> D869
> D871
> Anyone that can help with a schematic:
> Now, I also found Q802(A1020) shorted C-B.
> Further inspection shows T802 shorted on secondary 7-8. I confirmed this
with my Sencore out of circuit.
> With D890/891 out of circuit, I get 0 ohms, but ESR shows 0.2 ohms...is
there a coil causing this reading?
> Could there be anything
> else I am missing?
> Also, this transformer is not in stock at Tritronics, does anyone have one
in there bone yard?
> Thank you.
> jeff@xxxxxxxxxxxxxxxxxx
> Jeff Dougherty
>
>
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