Question about Apex Digital PF2720 27" TV

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Vertical size adjustment

Just need to adj. vert size a bit. Can anyone help?

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There is a black box appearing on about 75% of the screen. How can I remove it???

Posted on Oct 30, 2008

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Zenith TV B27A24Z, Vert Size Adjust


To do this adjustment, you should enter the service mode option. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given.

Feb 27, 2014 | Zenith Televison & Video

1 Answer

Top of screen disappeared...cant see score of game


The Height adjustment is off... look in the back of the TV set, it has some knobs in the back, one should be vert.lin for Vertical Linearity adjustment, and there is another call Vert.Hgt. for Vertical Height adjustment. try adjusting the Vertical Height first with someone watching in the front of the big TV to see if the top comes back into view, you might have to adjust the knob very slowly one way then the other way, to make this adjustment. If it doesnot adjust take it to a TV shop to get it repaired.
Good Luck.

Nov 11, 2010 | Hitachi 57F500 57" Rear Projection...

1 Answer

Picture roll up and down


Standard CRT televisions have a vertical roll adjustment,usually on the back at the bottom.
It may look like a white finger-knob (about the size of a pencil eraser) with a small screwdriver slot in the end...or it may be a roll-wheel...either way, it will be labeled "vertical" (or just "vert").

Make slow adjustment to the vertical until the roll stops.

*Use a solid signal for the adjustment, like DVD, VCR or cable...a weak signal can cause a bit of roll, too.

Apr 11, 2010 | Sony Televison & Video

1 Answer

Hqw can I adjust the vertical hold on a 36" sharp tv. it is built in and not easy top access the back


That's not the vert. hold...that for the vert col on the flyback...don't touch that! You need a service remote control to adj.vert and the right codes

Apr 03, 2010 | Televison & Video

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The vertical size needs adjusted


adjust the flyback,then adjust the vert up-down on tv

Feb 13, 2010 | RCA Televison & Video

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Zenith tv picture is larger than screen


Hello
There are Horizontal and Vertical size controls behind the back cover that need to be adjusted using a hand held tool. This adjustment requires a trained tech. High Voltage from the set is dangerous.
However, there maybe some limited controls that may help through the on screen menu.
To get into the setup menu, you need the original Remote that came with the TV.
Hold the Menu Key down until a box appears in the corner of the screen, then press 9,8,7,6 Enter. this takes you to the service menu. Just scroll through the items to find Horiz Size and Vert Size.
Good luck

Dec 30, 2009 | Zenith H32G48S TV

1 Answer

Vertical Stretch


You need to adjust "vertical height" in the service program. You need to put the set in "service mode" to do this adjustment. If you google "enter service mode RCA F32665" you should find the procedure. It will be listed in abbreviated letters such as VERT SIZE or VERT HT. Follow the instructions for entering service mode and saving the data closely!! The data you change will be listed as a number between 1 and 63. The number will only need to reduced by a small amount and you can still see the picture behind the data and watch it shrink as you adjust the number down.Always burn the new number to memory (if required) before exiting service mode. Good luck

barneyluc

Dec 01, 2008 | RCA F32665 32" TV

1 Answer

Picture flipping


The P52940 uses the 195 series chassis. The vert/hgt control is for vertical height. It adjusts the size of the picture from top to bottom. If your picture is flipping, it most likely means that something is wrong in the vertical circuits. I have seen fluid leak out of one of the CRTs and drip down on the vertical output IC, causeing the picture to go crazy vertically. The set should be serviced by a qualified tech experienced in the RCA 195 chassis.

Aug 18, 2007 | RCA P52940 52" Rear Projection Television

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

Oct 25, 2006 | Emerson SpongeBob SquarePants TV

1 Answer

Picture is slightly rotated clockwise


HHHmmm Thats a weird one?? Have you moved or transported the set lately?? As it always been like this or did the problem just spring up?. Im thinking it was assembled with the yolks or the picture tube mount not level so when you lost a little bit of vertical height it shows up alot more then if the scan was correct. If it just happens after a move of some sort then the crt mount might have bent to one side a bit to cause all three tubes to move at once, cause if it wasent all three tubes you would have differant colors over the screen outlining every straight edge. Theres a little control on the sweep pcb called vert ht. Try if your brave to adjust the pic out alittle to pull the pic and make it larger BUT I will warn you if your not a tech and know electronics you could get a bad shock from the inside of this set as the set has to be on to make this adj. Also you could slip a little and thats all it will take to cause more damage then an alighnment so maybe you should inquire what a service charge will cost ya and make sure the repair person trys to adjust the vertical height before selling you a repair job as alot of techs will say its not normal for a set to lose vertical Height without a part going bad but thats not true as capacitors will sometims change value a little and throw off the height. Good Luck

Jun 02, 2006 | Philips 55PP9363 55" Rear Projection...

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