[TechAssist] Re: Zenith PRO880 picture reversal procedure

Of course you can.  Just reverse the polarity on the horizontal yokes.
These had connectors that made it easy, IIRC.

Any CRT based projector can be reversed for rear projection in this manner.
Same for ceiling mounting vs floor mounting, just reverse the H & V yoke
polarities.  There may be geometry range problems with the latter if not
designed to do so, but even that can be affected by reversing the
convergence yokes in most cases.

Leonard Caillouet
Electronics World
1261 NW 76 Blvd
Gainesville, FL 32606
352-332-5608
FAX 352-332-5668



----- Original Message ----- 
From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, January 31, 2005 2:54 PM
Subject: [TechAssist] Re: Zenith PRO880 picture reversal procedure


I don't think you can change it from a rear to a front projo or
visa-versa but you can change it from a celling to a floor mount and
visa-versa. Once you get the covers off and locate the yoke connectors
it should be obvious.


********************************
Since 1972                     *
Jim Myers                      *
Telrad Electronics             *
Fort Wayne Indiana             *
********************************


John at Main TV wrote:
> I have a service call to reverse the picture on this set.  The customer
was
> using it as a rear projector and now wants to use it for a front
projector.
> He originally changed it from front to rear but he forgot the procedure
and
> now Zenith will not give him the procedure.  (according to him). He
thought
> it required changing a plug.  I did a google search for that number and
find
> only sales info.  At www.zenithservice.com I entered PRO880 for the owners
> manual and it said "no such number".  The customer said that is the only
> model number on the unit.  Any help appreciated, John.
> John Mielke
> Main TV
> 636 main St.
> Longmont, Co
> phone 303 776 6955
> fax  303 776 0792
> maintv2004@xxxxxxxxxxx
>
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