[TV] Re: Toshiba 57H81 blows fuse F850

["kysno1tvshop" <kysno1tvshop@xxxxxxxxxxxxx>]

Ken,

Those 3 connectors (2White and 1 Blue) pop up from the
Power Supply/Deflection Board Side of the connectors.

As for the Fuse Blowing check jumper 010 and 050 loose or broken.

Bill



----- Original Message -----
From: kweimer <kweimer@xxxxxxxxxxxxx>
To: <TV@xxxxxxxxxxxxxxx>
Sent: Thursday, April 22, 2004 10:17 PM
Subject: [TV] Toshiba 57H81 blows fuse F850


> I have found that fuse F850 (+16 volt PS) blows as soon as set is plugged
> into AC outlet.  An ohmmeter probe placed on load side of fuse initially
> indicates a very low resistance; however, this reading changes to
> "open"---such as would be expected as an electrolytic capacitor charged
up.
> There are two electrolytic capacitors in this circuit.  Given that the
fuse
> blows almost immediately, I expected a short circuit reading.  In order to
> further isolate this problem I need to separate the Power/Def PD0074 board
> from the Signal PD0073 board.  These two boards are adjacent to each other
> and are connected by a connector, the likes of which I have never seen
> before:  Two white plastic "thingies" with 16 wires each ("wire
contacts"?)
> and one smaller blue "thingy" (similar wires) bridges the two boards.  How
> do I "unhook" these connectors ?---they don't appear to unplug.  And any
> ideas why this fuse blows immediately in the absence of an obvious short
> reading?
>
> Ken Weimer
>
>
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