[TechAssist] Re: Mitsubishi WS-55311 dead set code 23
- From: "Jeff Farnsworth" <jlfonz@xxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 23 Apr 2005 15:13:06 -0500
Are you saying that the heat sink compound shoted the convergence IC's? And
that is why you replaced them? Check for an open pico fuse supplying the +
and -24v that in some of these also supply the vertical op IC. If these are
anything like the sonys you get a deflection failure error code because the
set is shutting off before it gets to the horizontal section because the
vertical is not firing up.
TV Doctor
Avalon, Wi
----- Original Message -----
From: "John @ Myers TV" <myers_tv_b@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, April 23, 2005 11:26 AM
Subject: [TechAssist] Mitsubishi WS-55311 dead set code 23
> Hi,
>
> Sorry for the length of this.
> Here's what I have. This is a service call job on a WS-55311 (Chassis
> #V20C).
> It was throwing an error code 22 (Short protect). I measured a dead
> short on the -24V line, which feeds the convergence output.
> When I removed the Heat sink from the convergence outputs, I found that
> too much heat sink compound had been applied to the chips, and had
> seeped down onto the board. This was the cause of my short.
> I replaced the convergence IC's, and now I'm getting a code 23
> (Horizontal Deflection Failure). The 110V supply is OK. I assume that I
> have deflection, since I'm reading HV drive to the power board.
>
> I double checked that I had replugged everything.
>
> Has anyone had any code 23 problems with these?
> Any ideas will be appreciated.
>
> Thanks,
>
> John Myers
> Myers TV Service
> Alliance, OH
> myers_tv_b@xxxxxxxxxxxxx
> www.myerstv.net
>
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