[TechAssist] Re: Sony KV27V65 "Hot" Horiz Output Transistor
- From: "Jeff Farnsworth" <jlfonz@xxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 11 Oct 2004 21:00:18 -0500
Most all of these sonys have a .47mf cap off of the HDT. Replace it if this
has one. You might have to chase a few inches away on some models.
TV Doctor
Avalon, Wi
----- Original Message -----
From: "Art Bevilacqua" <abevilac@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, October 11, 2004 8:38 PM
Subject: [TechAssist] Sony KV27V65 "Hot" Horiz Output Transistor
> This set ate one set of new parts (Horiz output transistor, dual reg
> transistor (MX0541) and a .47 resistor) after about an hour. We had
> resoldered the drive transformer and other horiz items.
>
> Now we've got this set running again, but the Horiz Output Transistor =
> just
> seems to be running too hot. All voltage and waveforms from the sync =
> chip up
> to the base of the Horiz Output Transistor are perfect, but there is a =
> bit
> of "ringing" type distortion following the main pulse at the "primary"
> windings of the flyback.
>
> I've never had to replace a flyback on one of these Sony's because of =
> this
> type of problem, but I'm thinking that might be needed here.
>
> Does this match anyone else's experience?
>
> (The parts we used are good originals from B&D)
>
>
> Art Bevilacqua
> Essex Radio and TV
> 40 Main Street
> Essex, MA 01929
>
>
>
>
>
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