Question about Panasonic PT-56WXF90 56" Rear Projection Television

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Vertical Hold adjustment

Does anyone have the service manual for this TV? I need to adjust the V-Hold.  (I know that I could mess it up forever..!).


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You can search this database for the service info you seek about your tv here:

Most service manuals with schematics cost about $27.95 for the PDF version of it, otherwise the paper version is about $15.00 more for handling and shipping.

You will need the chassis number of the unit in question in order to search for it. I hope this helps!

Good Luck!
Rich Lilja

Posted on Feb 07, 2009


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Where is the vertical hold control located on Vizio 32" 720 TV? Trying to give directions to handicapped brother remotely

there are no vertical/horizontal adjustments on this vizio lcd tv.
these functions are controlled by a microprocessor circuit and are not adjustable.

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2004 Toshiba TV 32A41 problem

to me its sound like your on the right track. there isnt a physical vertical hold adjustment. more than likely the vertical hold ic has failed. send me your email addy to and i will be more than glad to email you a service manual

Oct 25, 2007 | Televison & Video

1 Answer

The picture is moving up and down in every 3 sec

Vertical hold needs adjustment. Check for vertical hold preset and adjust. If no preset present in the P C B of the TV, try through service mode adjustment. Service mode adjustment possible only by the authorized service provider.

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No volume and channel display

In this situation as I don't know what adjustment item has been changed, go to service mode and press 5 and 0 on remote. This will reset all adjustments data on factory default. press mute and zero to write on memory. I want to inform you that after above procedure, you will have to adjust Horizontal, Vertical picture size and pin amp adjustments to get normal picture.
Good luck.

Sep 10, 2008 | Sony FD Trinitron WEGA KV-21CL10 21" TV

1 Answer

Vertical adjustment

I got your previous post. normally, the adjustments are toward the back following the back side of the main board, if they are not there, then they are sprayed all around the main board itself. things to look for are:


I'm looking for a service manual for your tv 27pt9015d. still not having any joy finding this manual. the problem you are experiencing is technically called "vertical fold over", if there is no adjustments, then it's circuit controlled and will probably need servicing.

Jun 24, 2008 | Televison & Video

1 Answer

Sharp tv/model no.27R-S50 . need service setup info.

press and hold volume up, channel up, then plug in tv. Should go into demo programming mode, worked on mine.

Apr 16, 2008 | Sharp 27R-S50 27" TV

1 Answer

Rolling screen

Does the onscreen menu roll too? If so, vertical hold needs to be adjusted. Not sure if on this model if that's in the service menu or a manual adjustment on the motherboard. Keep searching google and see if anyone else has had that issue too. 
Good Luck!

Mar 14, 2008 | Mitsubishi WS-65807 65" Rear Projection...

1 Answer

Rolling screen!

The sync is automatic and controled by the uPC. It is strongly not recomended to mess with the factory service set-up. There are no so-called user adjustable controls for the horizontal and vertical frequency on this model.

The fault is usualy failed components in the sync seperator and sync amp sections.

An experienced TV tech can troubleshoot this and replace the necessary parts for you.

Jerry G.

Nov 17, 2007 | Sony FD Trinitron WEGA KD-36FS130 36" TV

2 Answers

Screen Size is Too Big

There should be a vertical height adjustment control potentiometer near the vertical output IC on the right side of the PC board near the front section of the TV that can be adjusted to shrink the picture vertically. Be careful not to short anything out or getting yourself shocked in the process if you decide to try to adjust it yourself. Good luck. This chassis has also been known to have bad solder connections in that area also, so don't man-handle the printed circuit board roughly.

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1 Answer

Need access to service menu to adjust vertical size

No service menu for this set. Sounds like you have a bad yoke winding on this one....accordianman

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